Stringers for the frame

Abstract

The invention discloses a longitudinal beam for a frame. The longitudinal beam comprises a longitudinal beam body and a reinforcing plate, the longitudinal beam body is hollow tubular and comprises an inner plate and an outer plate, a plurality of inner plate energy absorption structures are arranged on the front section of the inner plate, a plurality of outer plate energy absorption structures are arranged on the front section of the outer plate, and the reinforcing plate is positioned inside the longitudinal beam body and fixed to the front section of the outer plate. When a vehicle is directly collided, collision energy can be absorbed by collapse deformation of the inner plate energy absorption structures and the outer plate energy absorption structures. When the speed of the vehicle is high, after the energy is sufficiently absorbed by the inner plate energy absorption structures and the outer plate energy absorption structures, redundant energy can be absorbed by the reinforcing plate, the condition that the energy cannot be sufficiently absorbed in sufficient collapse deformation of the inner plate energy absorption structures and the outer plate energy absorption structures is greatly improved, accordingly, a front deformation and energy absorption area absorbs the most collision energy, the longitudinal beam at a cab is prevented from deforming and bearing excessive collision acceleration, and safety of passengers is sufficiently protected.

Description

technical field [0001] The invention relates to the technical field of automobile construction, in particular to a longitudinal beam used for a vehicle frame. Background technique [0002] The structure of the traditional frame longitudinal beam is a hollow tube, which includes an inner plate and an outer plate that are fastened and welded to each other. When the vehicle is in a frontal collision, the longitudinal beam is a hollow structure, so it can absorb the collision energy well. However, in order to ensure the stability and reliability of the frame, the overall strength and stiffness of the longitudinal beams are relatively high, resulting in limited energy absorption effects, especially when the collision energy is large, the front section of the longitudinal beams cannot absorb the collision energy well . [0003] The current solution is to provide energy-absorbing grooves on the front part of the stringer, and the energy-absorbing grooves are located on the outside...

AI Technical Summary

Problems solved by technology

[0004] However, this energy-absorbing method still cannot meet the collision energy-absorbing requirements well. For example, after a frontal collision occurs at a high speed of the vehicle, some or even most of the collision energy still remains after the energy-absorbing groove absorbs part of the collision energy. The energy is transmitted to the rear, causing severe deformation of the corresponding longitudinal beam of the cab, thus threatening the personal safety of the driver and passengers in the cab

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