Welding method of skirtboard structure of underframe equipment cabin

Abstract

The invention discloses a skirtboard structure of an underframe equipment cabin and a welding method thereof. A trapezoidal truss structure consisting of three layers of aluminum plates is adopted, wherein the three layers of aluminum plates are sequentially welded according to the overlapping sequence, so that the requirement of limited space of a skirtboard is met on the premise of the due strength and rigidity of the skirtboard and the lightweight design of the equipment cabin is realized. The skirtboard structure of the underframe equipment cabin comprises three layers of aluminum plates,wherein two side ends of the two layers of aluminum plates on the upper part are respectively welded with a U-shaped aluminum section; the three layers of aluminum plates are sequentially welded according to the overlapping sequence; and the widths of the three layers of aluminum plates are different, but the longitudinal lengths of the two layers of aluminum plates are the same. Because the skirtboard adopts the trapezoidal welding structure formed by overlapping the three layers of aluminum plates, materials are saved and the space occupied by the whole machined skirtboard is also saved. Onthe basis of the traditional welding technology and machining equipment, in the welding way between every two aluminum plates, the deformation is guaranteed to be relatively small and the design requirements on the strength and the rigidity can be also met. The two layers of aluminum plates overlapped on the upper part are riveted through perforation of a riveted stud bolt.

Description

technical field [0001] The invention relates to an underframe equipment compartment skirt plate structure applied to rail vehicles and a welding processing method thereof. Specifically, three layers of aluminum plates of the same thickness are used to form a trapezoidal welding structure, which belongs to the field of mechanical manufacturing. Background technique [0002] At present, the high-speed rail vehicles designed and used in China, such as urban light rail, subway, EMU and passenger train, etc., all the equipment under the vehicle are accommodated and installed in the equipment compartment of the underframe. [0003] The skirt plate that constitutes the equipment compartment of the underframe is usually made of stainless steel for spot welding. The overall rigidity of the stainless steel skirt plate is relatively high, and it is easy to deform during the spot welding process. Once deformed, it is difficult to repair and adjust. [0004] Moreover, the weight of the s...

AI Technical Summary

Problems solved by technology

Under the limitations of the current technical level and welding equipment, the quality of the three-layer aluminum plate after welding cannot be accurately realized, and there is still a certain deformation and affects the overall appearance of the skirt.

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