Double-gradient-strength passenger car stand column structure

Abstract

The invention discloses a double-gradient-strength passenger car stand column structure. The double-gradient-strength passenger car stand column structure is characterized by consisting of a longitudinal gradient strength stand column and a transverse filling gradient density foam material. As the transverse filling density foam material is bonded on the inner side wall of a gradient strength L-shaped plate in the length direction of the gradient strength L-shaped plate, the collision force of the key part-stand column of a passenger car closed loop structure can be guaranteed to be matched with the strength of the corresponding position in the passenger car tilting process, the stress of each surrounding part of a passenger car is more uniform, and the unloading of external impact load is facilitated. In addition, the transverse filling gradient density foam material enhances the rigidity of the stand column, and the energy absorption is more stable in the tilting of the passenger car, so that secondary collision casualties are reduced. Meanwhile, the foam material also achieves the effects of sound isolation and heat insulation, and improves the tilting safety and the comfort of the passenger car.

Description

technical field [0001] The invention relates to a passenger car structure, in particular to a passenger car column structure with double gradient strength. Background technique [0002] With the rapid development of road passenger transport, passenger vehicles have become one of the main means of transportation for citizens of our country to travel. Therefore, passenger vehicle accidents are the main body of serious traffic accidents, accounting for 70% of the total number of serious accidents, and rollover is the most serious traffic accident among passenger vehicle accidents. , easily causing large traffic casualties. Therefore, how to maximize the rollover performance of passenger cars has become the focus of research. [0003] When a passenger car rolls over and collides, the side wall first deforms. During the entire rollover process, the closed-loop structure of the side wall frame of the bus is the main energy-absorbing component, and the most deformed part of the si...

AI Technical Summary

Problems solved by technology

Therefore, in order to ensure that the side wall of the bus is evenly stressed and less deformed, a double-gradient-strength passenger car column structure is developed. The strength of the column increases from top to bottom, which matches the different forces at different positions of the column when the bus rolls over. , so that the overall rigidity of the column is enhanced; when the existing closed-loop structure of the passenger car rolls over and collides, the energy absorption effect of each component is not ideal

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