Automobile front suspension framework

Abstract

The invention provides an automobile front suspension framework, belongs to the technical field of automobiles and aims to solve the problems that an existing automobile engine is poor in falling accuracy during collision, inconvenient to maintain in the later period and higher in cost. According to the automobile front suspension framework, two automobile body longitudinal beams which are arranged at intervals are arranged in an engine compartment of an automobile. The front suspension framework comprises an auxiliary frame and a power assembly; the power assembly is connected with the auxiliary frame only through a plurality of suspension structures arranged in the circumferential direction of the power assembly at intervals and is located between the two automobile body longitudinal beams; the auxiliary frame is connected with the two automobile body longitudinal beams only through connecting bolts sequentially penetrating through the auxiliary frame and the automobile body longitudinal beams; the material strength of the auxiliary frame and the material strength of the automobile body longitudinal beams are larger than that of the connecting bolts; and the connecting bolts canbe broken when the auxiliary frame generates longitudinal displacement relative to the automobile body longitudinal beams. When the automobile is subject to collision, an engine and the auxiliary frame sink and fall off, invasion of the engine and the auxiliary frame into a cab is avoided, the accuracy of the breakage of the connecting bolts is higher, and unnecessary breakage is avoided.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and relates to an automobile front suspension structure. Background technique [0002] With the continuous improvement of living standards, the penetration rate of automobiles continues to increase. However, the accident rate of automobiles remains high all the time. Therefore, the safety performance of automobiles has always been an important indicator of automobile performance. Since most of the current automobiles adopt a front-drive structure, the powertrain is usually installed in the engine compartment in front of the cab. When a frontal collision occurs, the rigid engine may be forced to move backwards and squeeze into the cab, causing the driver to The cabin space becomes smaller, causing injury to the driver and passengers. [0003] In order to avoid the above situation, at present, automobile companies have developed engine sinking technology, so that the engine can move downward ...

AI Technical Summary

Problems solved by technology

However, since the connection strength between the connection block and the reinforcement bracket depends entirely on the welding strength between the two, and because the welding strength will be affected by the welder, and the influence is large, it is impossible to accurately control the connection block and the reinforcement bracket. The strength of the connection between them, that is, the stress conditions when the engine sinks cannot be guaranteed, resulting in the possibility that the engine cannot be disengaged or may fall off early under a small impact, and every time the engine is disengaged, it will cause damage to the reinforcing bracket and need to be replaced Strengthen the bracket and re-weld the detached structure, the maintenance operation is more cumbersome and the cost is higher

Moreover, in this solution, the engine is partly connected to the side beams of the body and partly connected to the subframe, so that even after the subframe falls off, the engine may still be connected to the side members of the body and cannot fall, resulting in engine intrusion driving. room risk

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