Car frame connecting structure

Abstract

The invention relates to a car frame connecting structure comprising a side window longitudinal beam, an upright column, a stiffening beam, a top cap longitudinal beam and a top cap horizontal beam, wherein the side window longitudinal beam is riveted with the upright column through a medium corner; the side window longitudinal beam is riveted with the lower part of the stiffening beam; the upright column is riveted with the stiffening beam; the upper part of the stiffening beam is riveted with the top cap horizontal beam through a large corner; and the top cap longitudinal beam is riveted with the top cap horizontal beam through the medium corner. The car frame connecting structure is made of aluminium alloys or magnesium alloys. The invention achieves the effect on reducing weight approximate to a half under the conditions of same or similar strength of steels by adopting the car frame connecting structure made of the aluminium alloys or the magnesium alloys, thereby greatly reducing the weight of a car body without reducing the strength; and in addition, the invention has the advantages of reduced manufacturing and operating cost, long service life and more energy saving and environmental protection, prevents the stress concentration caused by adopting a welding mode through riveting connection and has firm connection without generating cracks.

Description

technical field [0001] The invention relates to a connection structure, in particular to a vehicle frame connection structure, which belongs to the field of automobile connection structures. Background technique [0002] At present, most of the skeletons of passenger cars are rectangular steel pipe structures, and the connections of the steel pipes are all welded. The weight of the steel skeleton body is about 1 / 5 heavier than that of the aluminum skeleton. A 12-meter-long ordinary steel skeleton bus weighs about 14.5 tons, while The same 12-meter-long aluminum frame bus weighs about 11.5 tons, and its own weight is only 3 tons short. Especially for new energy buses, the weight of the battery is 2.5-4 tons, and the steel frame bus has a small passenger carrying capacity except for the battery and its own weight. Therefore, the aluminum frame body is a brand-new technology development trend in passenger car manufacturing. However, when the body frame is changed to aluminum p...

AI Technical Summary

Problems solved by technology

Therefore, the aluminum frame body is a brand-new technology development trend in passenger car manufacturing. However, when the body frame is changed to aluminum profiles, stress concentration and cracks will occur due to welding. It is necessary to invent and design an effective connection structure to make the aluminum frame The body connection is safe and firm, and the service life is long

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