The invention relates to the technical field of design of vehicle frames of motor tricycles, in particular to a connecting method of a vehicle head stand pipe, a main beam and a keel horizontal beam and a vehicle frame and solves the technical problems that connecting structures of vehicle head stand pipes, main beams and keel horizontal beams are high in welding workload and hardly tolerate heavy load in the prior art. The connecting method includes the steps that a similarly triangular right prism connecting piece (1) is fabricated, the main beam and the vehicle head stand pipe are firmly welded, the keel horizontal beam and the main beam are firmly welded, and welding of the keel horizontal beam and the main beam is reinforced through a first connecting piece (a) and a second connecting piece (b). According to the connecting method of the vehicle head stand pipe, the main beam and the keel horizontal beam and the vehicle frame, fastened connection between the keel horizontal beam and the main beam can be achieved through self fabrication of the similarly triangular right prism connecting piece, connecting bear load of the stand pipe can be reduced, the length of welding seams that act on the stand pipe can be reduced, and technical effects of avoiding passive thermal treatment or thermal deformation of the stand pipe can be achieved. Besides, by means of the connecting method of the vehicle head stand pipe, the main beam and the keel horizontal beam and the vehicle frame, technical effects of small deformation quantity when the vehicle frame of a motor tricycle carries heavy load, firm connection of welding positions and difficulty cracking can be achieved.


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    Title :

    Connecting method of vehicle head stand pipe, main beam and keel horizontal beam and vehicle frame


    Contributors:
    LI XIANFENG (author)

    Publication date :

    2015-04-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62K Fahrräder , CYCLES



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