Aluminum stressed skin structure of passenger car body side walls and processing method thereof

Abstract

The invention relates to an aluminum stressed skin structure of passenger car body side walls. The passenger car body side walls comprise a side wall framework welded by vertically arranged column frameworks and horizontally arranged beam frameworks and aluminum stressed skin covering the side wall framework, wherein the aluminum stressed skin is bonded and fixed to the side wall framework by bonding glue; the column frameworks are provided with liner plates with framework riveting points; and the aluminum stressed skin is also riveted and fixed on the framework riveting points of the liner plates by rivets. The technical solution of the invention optimizes the bonding structure and processing of the aluminum stressed skin. By using the structure and the processing method combining bonding with riveting, the aluminum stressed skin structure of the passenger car body side walls ensures the reliable bonding of the stressed skin and no displacement, reduces the risk of cracking of the bonding of the aluminum stressed skin, and overcomes the shortcomings in the traditional processing of heating-tension stressed skins and bonding stressed skins in the prior art.

Description

technical field [0001] This patent application relates to the field of new energy passenger cars, especially the structure used for the aluminum skin of the side wall of the passenger car and the method for processing the aluminum skin of the side wall of the car body. Background technique [0002] The side skin of the bus body is a plate covering the outer surface of the side frame. The pattern of the body is mainly sprayed on the surface of the skin. Therefore, the flatness of the skin is an important factor affecting the appearance quality of the bus. At the same time, high-quality side skins can effectively improve the sealing effect and noise insulation effect of the vehicle. In addition, high-quality side skins can also improve the strength of the body and enhance the torsional rigidity of the bus, thereby significantly improving the safety of the vehicle. performance. [0003] Therefore, the side skin is an important production process in the whole vehicle manufactur...

AI Technical Summary

Problems solved by technology

[0004] For the heat-stretched skin, the principle of thermal expansion and contraction of the skin is used. The skin is stretched after being heated, and is welded and fixed on the circumference of the skin. At the same time, a low-density sponge strip is placed on the inner skeleton. After natural cooling, the skin returns Shrinking and tensioning achieves the flatness of the skin, but this welding method has a large amount of deformation of the side skin, which leads to a large amount of work for painting and scraping dust, and increases the cost. Completed in a short time, it has the disadvantages of high work intensity, difficult operation, and difficult control

[0005] For the currently hot new energy bus market, in order to reduce the weight of the car body and improve the battery life of the bus, aluminum plates are usually used as skins. The weldability of aluminum plates is poor, and the production process of bonding skins is usually used. Although the flatness is limited improved, but the skin is easy to collapse, and the paint at the skin joints is easy to crack under the extreme condition of the bus operation, and even the skin collapses.

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