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1车架纵梁弯曲及裂纹原因汽车车架弯曲、裂纹多发生在距后横梁3~4.5m的纵梁中前部位;架驶室后悬置横梁与纵梁左右两边的连接处;后钢板弹簧卷耳处;使用挂车时拖曳后横梁处。出现裂纹规律一般是从槽钢上边缘起延伸至整个下翼。产生上述现象的原因主要有两个方面。1.1产品结
1 frame bending and cracking causes car frame bending, cracks occurred in the distance from the rear beam 3 ~ 4.5m in the front part of the longitudinal beam; after the cab hanging suspension beams and the left and right sides of the junction; rear leaf spring Rolling ears; drag the rear beam when using the trailer. Crack law appears to extend from the upper edge of the channel to the entire lower wing. There are two main reasons for the above phenomenon. 1.1 product knot