Front frame assembly of vehicle body chassis

Abstract

The invention discloses a front frame assembly of a vehicle body chassis, which comprises a vehicle head frame assembly and a vehicle body front frame assembly, wherein the vehicle body front frame assembly comprises a vehicle front longitudinal beam and a vehicle front cross beam; a front floor is extended arranged on the vehicle front longitudinal beam; the inner wall of the top of the front endof an inverted U-shaped central channel is fixedly connected with the top wall of a central channel front reinforcing plate; a transmission suspension bracket is arranged at the lower end of the central channel; the lower part of the central channel front reinforcing plate is fixedly connected with the transmission suspension bracket; the transmission suspension bracket is fixedly connected withthe vehicle front longitudinal beam; the transmission suspension bracket is fixedly connected with the bottom wall of the vehicle front longitudinal beam; front cavities are arranged between the vehicle front longitudinal beam, the transmission suspension bracket and the central channel. The front frame assembly of the vehicle body chassis is simple in structure, the riding comfort of passengers is effectively improved, the vibration and the noise of a front floor area are reduced, the rigidity and the shock resistance of the front floor area can be effectively improved, the stress concentration is avoided, and the vehicle body safety performance is effectively improved.

Description

technical field [0001] The invention relates to a frame structure of an automobile, in particular to a front frame assembly of a vehicle body chassis. Background technique [0002] The body structure is composed of outer covering parts, beams, pillars and structural reinforcements, and is the basic system for bearing loads such as road chassis collisions and transmitting loads. The body structure design plays a decisive role in the safety of the body, durability strength, bending and torsional stiffness, and modal performance of the body in white. The body structure design not only affects the performance of the body, but also affects the weight and cost of the body. [0003] Medium-sized SUV models are generally 5-seater or 7-seater cars with a wheelbase of more than 2700mm. Traditional SUVs are front-engine front-drive. When the wheelbase reaches 2800mm, there is likely to be a large difference in the front and rear weights of the vehicle, and the front is heavy and the r...

AI Technical Summary

Problems solved by technology

Body structure design not only affects the performance of the body, but also affects the weight and cost of the body

[0003] Medium-sized SUV models are generally 5-seater or 7-seater cars with a wheelbase of more than 2700mm. Traditional SUVs are front-engine front-drive. When the wheelbase reaches 2800mm, there is likely to be a large difference in the front and rear weights of the vehicle, and the front is heavy and the rear is light. Affect the balance, stability, and handling of the vehicle; in order to meet the body performance under the condition of long wheelbase, the number of beams and longitudinal beams is generally large, the weight of the body is heavy and the cost is high; Under the central channel of the front floor, it is easy to cause vibration and noise of the front floor, often resulting in poor passenger comfort; the transmission path of the front frame force of the traditional chassis is not clear, and it is difficult to improve the safety performance of the vehicle

The chassis frame lacks a high-strength / high-stiffness closed-loop structure, which is not conducive to the improvement of vehicle modal / rigidity

In the traditional structure, there is no skeleton connection between the longitudinal beam in the front floor area and the middle channel, and there is a drive shaft at the bottom of the middle channel, which is easy to cause vibration and noise in the front floor area during driving.

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