The invention discloses a semitrailer and a traction device therefor. The semitrailer comprises the semitrailer traction device, and the traction device comprises a traction board, a traction cross beam, and a traction longitudinal beam, wherein the traction cross beam and the traction longitudinal beam are disposed on the traction board. The traction device is characterized in that the traction board is provided with a positioning hole; the traction cross beam and/or the traction longitudinal beam are/is provided with at least one projection; the projection cooperates with the positioning hole, so as to achieve automatic positioning. The traction device achieves the automatic positioning of the traction cross beam, the traction longitudinal beam and the traction board, eliminates the unnecessary measurement and positioning operation during the welding of the traction device, saves working time, improves the production efficiency and manufacturing precision, and reduces the labor cost. Because the semitrailer provided by the invention employs the traction device, the assembly efficiency is improved and the reliability is also improved.


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    Title :

    Semitrailer and traction device therefor


    Contributors:
    SHU LEI (author) / JIAN ZHIYUAN (author)

    Publication date :

    2015-09-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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