The invention belongs to the technical field of aluminum alloy auxiliary frames, and provides a lightweight welding aluminum alloy auxiliary frame which comprises a front cross beam, a rear cross beam, a middle cross beam and longitudinal beams, the front portions and the rear portions of the longitudinal beams are connected with the front cross beam and the rear cross beam respectively, the longitudinal beams comprise the left longitudinal beam and the right longitudinal beam, and the middle cross beam is connected between the left longitudinal beam and the right longitudinal beam. A front vehicle body mounting bracket is connected between the front cross beam and the longitudinal beam, and a transfer release structure for ensuring that the longitudinal beam is bent according to the shape and is dispersed to the middle cross beam and the rear vehicle body mounting bracket of the auxiliary frame in the collision process of the auxiliary frame is arranged between the front vehicle body mounting bracket and the longitudinal beam. The auxiliary frame has the advantages that the welding lap joint structure of the aluminum profile and other assemblies is reasonably designed, the weight is reduced, meanwhile, the performance indexes such as the overall mode, rigidity, strength and fatigue of the auxiliary frame can meet or be higher than the target requirements, the overall frame of the auxiliary frame has good performance in coping with the working conditions of 100% head-on collision and 25% offset collision of the whole vehicle, and the service life of the auxiliary frame is prolonged. And target requirements are met.
本发明属于铝合金副车架技术领域,提供了一种轻量化焊接铝合金副车架,包括前横梁、后横梁、中间横梁以及纵梁,纵梁的前部和后部分别连接前横梁和后横梁,纵梁分为左纵梁和右纵梁,中间横梁连接在左纵梁和右纵梁之间,前横梁和纵梁之间连接有前车身安装支架,在前车身安装支架与纵梁之间具有在副车架在碰撞过程保证纵梁按型折弯模式并分散至副车架中间横梁和后车身安装支架的传递释放结构。本发明的优点在于通过合理设计铝型材与其它组件焊接搭接结构,轻量化的同时,副车架整体模态,刚度,强度及疲劳等性能指标亦能满足和高于目标需求,副车架整体框架在应对整车100%正面碰撞和25%偏置碰撞工况中表现良好,满足目标要求。
Lightweight welding aluminum alloy auxiliary frame
一种轻量化焊接铝合金副车架
2022-12-20
Patent
Elektronische Ressource
Chinesisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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