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Vehicle structure resistant to direct impact and manufacturing method

A manufacturing method and vehicle technology, applied to the substructure, superstructure, vehicle parts, etc., to achieve the effect of reducing the number of body parts, reducing the number and weight, and improving safety performance

Active Publication Date: 2021-04-09
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Harsh crash test conditions bring great challenges to the safety design of the body structure, especially when lightweight design is considered

Method used

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  • Vehicle structure resistant to direct impact and manufacturing method
  • Vehicle structure resistant to direct impact and manufacturing method
  • Vehicle structure resistant to direct impact and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Figure 1-4 A vehicle structure for resisting frontal collision is shown, including an anti-collision beam 1 located at the front end of the vehicle body; energy-absorbing boxes 2 installed at both ends of the back of the anti-collision beam 1; front longitudinal beams 3 installed at the back of the energy-absorbing box 2; Including the front connecting piece 4 installed at the tail end of the front longitudinal beam 3; the firewall beam 5 installed between the two front connecting pieces 4, the threshold beam 6 installed at the rear end of the front connecting piece 4; the rear connection installed at the rear end of the threshold beam 6 Part 7; the side wall frame 8 installed on the top of the front connecting part 4 and the top of the rear connecting part 7 and the floor rear beam 9 installed between the two rear connecting parts 7; The energy box 2, the horizontal closed loop surrounded by the front longitudinal beam 3 and the fire wall crossbeam 5;

[0048] Due to...

Embodiment 2

[0057] The present invention also relates to the above-mentioned manufacturing method, specifically comprising the following steps:

[0058] S1: Manufacture the energy-absorbing box 2, front longitudinal beam 3, firewall beam 5, sill beam 6, and side wall frame 8 by extrusion molding process; manufacture front anti-collision beam 1 and side wall frame 8 by extrusion stretch-bending process ; The front connector 4 and the rear connector 7 are manufactured by a casting process;

[0059] S2: Use the parts formed in step S1 to assemble the vehicle body.

[0060] In this embodiment, in step S1, the extrusion molding process includes the following steps:

[0061] (1) According to the cross-sectional shape of the part to be extruded, prepare the corresponding extrusion die, and fasten the extrusion die to the port of the extrusion equipment;

[0062] (2) Soften the material, heat the aluminum alloy ingot to 380-440°C, and laser cut the aluminum material according to the required si...

Embodiment 3

[0080] exist Figure 1-4 Among them, the present invention provides a vehicle structure that resists frontal collisions, and the structure includes a front anti-collision beam 1, an energy-absorbing box 2, a front longitudinal beam 3, a front connector 4, a firewall beam 5, a threshold beam 6, and a rear connector 7 , side wall frame 8, floor rear beam 9.

[0081] In this embodiment, the energy-absorbing box 2 , the front longitudinal beam 3 , the front connector 4 , the sill beam 6 , the rear connector 7 , and the side wall frame 8 are all left-right symmetrical structures about the central axis of the vehicle.

[0082]In this embodiment, the front anti-collision beam 1 is located at the forefront of the structure, and behind it is a symmetrical energy-absorbing box 2, and the energy-absorbing box 2 is welded to the front anti-collision beam 1 and its coaxial rear front by CMT. The longitudinal beam 3 is connected; the rear part of the front longitudinal beam 3 is the front ...

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Abstract

The invention relates to a vehicle structure resistant to direct impact and a manufacturing method, and the vehicle structure comprises an anti-collision beam (1); an energy absorbing box (2); a front side member (3); a front connecting piece (4); a firewall crossbeam (5) and a doorsill beam (6); a rear connecting piece (7); a side wall frame (8) and a bottom plate rear cross beam (9); the components form a transverse closed loop and a longitudinal closed frame. For the manufacturing method, the manufacturing method comprises the following steps of adopting S1, an extrusion forming process, and manufacturing an energy absorption box, a front longitudinal beam, a firewall cross beam, a doorsill beam and a side wall frame; manufacturing a front anti-collision beam and a side wall frame by adopting an extrusion stretch bending forming process; manufacturing a front connecting piece and a rear connecting piece by adopting a casting molding process; and S2, assembling the vehicle body by adopting the components formed in the step S1. According to the invention, the number and weight of vehicle parts can be reduced, and the safety performance in the head-on collision can be improved.

Description

technical field [0001] The invention relates to the field of design and collision safety, in particular to a vehicle structure resistant to frontal collision. Background technique [0002] In the frontal collision safety design of automobiles, the key structures such as the front anti-collision beam, the energy-absorbing box, and the front longitudinal beam of the vehicle body are the main energy-absorbing parts of the frontal collision. Through the collapse and deformation of these structures, more than 50% of the collision kinetic energy can be absorbed, effectively Reduce the impact on the passenger compartment and reduce the harm to people caused by traffic accidents. In a frontal 100% rigid wall collision, the energy-absorbing structure at the front of the vehicle body completely coincides with the barrier, and the energy-absorbing structures on both sides of the vehicle body are basically under positive axial pressure, which can exert the maximum energy-absorbing effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R19/18B60R19/34B62D21/02B62D25/20B21C23/00
CPCB21C23/00B60R19/18B60R19/34B60R2019/182B62D21/02B62D25/20
Inventor 姜潮韩旭雷飞黄启华
Owner HUNAN UNIV
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