Car body longitudinal beam local reinforcement structure

Abstract

The invention discloses a car body longitudinal beam local reinforcement structure. The car body longitudinal beam local reinforcement structure comprises a car body longitudinal beam, wherein the cross section of the car body longitudinal beam is of a U shape. The car body longitudinal beam local reinforcement structure further comprises a lower lining plate and an upper lining plate, wherein the two long edges of the lower lining plate are welded to the two sides of a U-shaped groove bottom of the car body longitudinal beam respectively, and the two long edges of the upper lining plate are welded to the two sides of a U-shaped groove opening of the car body longitudinal beam respectively. According to the car body longitudinal beam local reinforcement structure, a frame-shaped closed structure is formed by providing the shapes of transverse reinforcing ribs or transverse reinforcing protrusions or longitudinal concave pits and convex protrusions of different components, so that the need for reinforced strength is guaranteed. Meanwhile, uniform transition with original structural stress is realized through changes in heights of a wing surface of the lower lining plate; meanwhile, the whole car body longitudinal beam local reinforcement structure is formed by stamping and welding sheet metal, the adoption of groove profile steel or even a press forging structure is avoided, and therefore weight is reduced; the car body longitudinal beam local reinforcement structure is simple and quite practical.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a partial reinforcement structure for a longitudinal beam of a car body. Background technique [0002] In the field of automobile design, it is often necessary to modify the mature automobile body structure. For example, in the design of the electric vehicle body, the existing traditional power complete body structure is often used, but due to the needs of modification, such as installing battery brackets on the body longitudinal beam, etc., it is necessary to strengthen the body longitudinal beam structure with local large loads. Due to the limited space of the longitudinal beams, it is more difficult to strengthen the structural scheme for large loads. At the same time, in actual design, it is often difficult to ensure that the reinforcement scheme is uniformly integrated with the original structure in terms of stress, and the weak area of ​​stress is often transferred to t...

AI Technical Summary

Problems solved by technology

At the same time, in actual design, it is often difficult to ensure that the reinforcement scheme is uniformly integrated with the original structure in terms of stress, and the weak area of ​​stress is often transferred to the junction of the reinforcement structure and the original structure, resulting in fatigue damage of the vehicle at the new position

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