Special aluminum casting joint for aluminum alloy vehicle body frame

A body frame, aluminum alloy technology, applied in the direction of connection, transportation and packaging between vehicle components and superstructure sub-assemblies, can solve the problems of inability to guarantee the strength of the welding position, long welding position, and difficult welding, etc. Achieve the effect of avoiding defects and reducing mechanical properties, improving production efficiency, and reducing body weight

Pending Publication Date: 2020-02-21
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the body frame of aluminum alloy profiles is mainly welded, and the main problems include: the welding position is long, the welding of different cross-sectional shapes, especially special-shaped profiles, is difficult, the welding efficiency is low, and the welding position cannot be guaranteed. strength

Method used

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  • Special aluminum casting joint for aluminum alloy vehicle body frame
  • Special aluminum casting joint for aluminum alloy vehicle body frame
  • Special aluminum casting joint for aluminum alloy vehicle body frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] like figure 2As shown, there are two second connecting parts, wherein, one second connecting part 120a is coaxially fixedly connected with the first connecting part 110, and the other second connecting part 120b (the axis of) is connected with the first connecting part 110 (the axis ) has a first included angle α; and the value range of the first included angle α is: 0°<α<180°. A reinforcing rib 150 is connected between the first connecting portion 110 and the second connecting portion 120b, and a reinforcing rib 150 is also connected between the second connecting portion 120a and the second connecting portion 120b. Wherein, the cross-sections of the two second connecting grooves 121 and the first connecting groove 111 are both square-shaped. Each end face of the cast aluminum joint is connected with the aluminum alloy profile by MIG welding seam. The cast aluminum joint structure in Example 1 can be used to connect aluminum alloy profiles with cross-sectional outer ...

Embodiment 2

[0052] like Figure 3-4 As shown, this embodiment is a special case of Embodiment 1, and its connection mode and cross-sectional shape are the same as Embodiment 1. In Embodiment 2, the second connecting portion 120b (the axis) is connected to the first connecting portion 110 (the axis) between the first angle α=90°. Each end face of the cast aluminum joint is connected with the aluminum alloy profile by MIG welding seam.

[0053] The strength of the weld area of ​​the aluminum alloy material is about 50%-60% of the strength of the base metal, and the area around the weld is the weak area of ​​the overall structure. Due to the existence of the weld, the strength and stiffness of the welded aluminum alloy profile structure will be significantly reduced. The overall frame structure formed by welding the cast aluminum joints and aluminum alloy profiles in this embodiment can effectively reduce the length of the weld seam. Compared with the structure directly welded with the same...

Embodiment 3

[0055] like Figure 5 As shown, there are two second connecting parts; wherein, there is a second angle β between one second connecting part 120a (the axis) and the first connecting part 110 (the axis), and the other second connecting part 120b ( There is a third included angle θ between (the axis of) and the first connecting part 110 (the axis), and there is a fourth included angle δ between the two second connecting parts 120a (the axis) and 120b (the axis); and the The value range of the second included angle β is: 0°<β<180°, the value range of the third included angle θ is: 0°<θ<180°; the value range of the fourth included angle δ The value range is: 0°<δ<180°; and β=θ=δ. A reinforcing rib 150 is connected between the first connecting portion 110 and the second connecting portion 120a, a reinforcing rib 150 is connected between the first connecting portion 110 and the second connecting portion 120b, and the second connecting portion 120a is connected to the second connect...

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Abstract

The invention discloses a special aluminum casting joint for an aluminum alloy vehicle body frame. The aluminum casting joint comprises a first connecting part, a plurality of second connecting parts,and a plurality of limiting steps, wherein the first connecting part is cylindrical, and one end of the first connecting part is provided with a first connecting groove in the axial direction; the plurality of second connecting parts are cylindrical, the plurality of second connecting parts are arranged around the other end of the first connecting part, one ends of the plurality of second connecting parts are fixedly connected with the first connecting part, the other ends of the second connecting parts are provided with second connecting grooves in the axial direction, and the second connecting grooves communicate with the first connecting groove; the limiting steps are fixedly arranged in the first connecting groove and the second connecting grooves correspondingly; and the aluminum casting joint is of an integral forming structure. According to the special aluminum casting joint for the aluminum alloy vehicle body frame, the effective connection of different angles of an aluminum alloy profile and sections of different profiles can be achieved, the integral rigidity and the integral strength of the joint part are ensured, the welding length is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of connection of all-aluminum body frames, and in particular relates to a special cast aluminum joint for aluminum alloy body frames. Background technique [0002] In recent years, problems such as energy crisis and environmental pollution need to be solved urgently. In the automotive industry, lightweight design has become a development trend and hot spot. Lightweight design mainly includes material lightweight, structural lightweight and process lightweight. Lightweight materials are mainly applied in light alloys such as aluminum-magnesium alloys. Structural lightweight design is mainly to achieve overall weight reduction without sacrificing performance through structural optimization. Process lightweight is the new processing technology that can realize the processing and molding of new materials and new structures. Therefore, it is proposed to adopt aluminum alloy profiles to construct an all-aluminu...

Claims

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Application Information

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IPC IPC(8): B62D27/02B62D29/00
CPCB62D27/02B62D29/008
Inventor 王佳宁陈鑫赵康明杨立飞
Owner JILIN UNIV
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