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Steel-aluminum auxiliary frame

A sub-frame, steel-aluminum technology, applied in vehicle parts, upper structure, lower structure, etc., can solve the problems of stress concentration, fatigue crack, product defect rate, etc., to eliminate stress concentration, improve fatigue life, reduce sand inclusion Effect

Pending Publication Date: 2020-03-24
NINGBO JIANXIN CHASSIS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common aluminum alloy sub-frames on the market generally have the following problems: (1) the product defect rate is high; (2) the stress concentration phenomenon in the welding area of ​​the longitudinal beam and the beam is obvious, and fatigue crack initiation is easy to occur

Method used

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  • Steel-aluminum auxiliary frame
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  • Steel-aluminum auxiliary frame

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Such as Figure 1~5 As shown, a steel-aluminum subframe is frame-shaped as a whole, including a front beam 1, a rear beam 2, and a left longitudinal beam 3 and a right longitudinal beam 4 respectively connected to the two ends of the front and rear beams 1 and 2, and the left 1. A reinforcing beam 6 is connected between the right longitudinal beams 3 and 4. The left longitudinal beam 3 includes a left upper longitudinal beam 31 and a left lower longitudinal beam 32, and the right longitudinal beam 4 includes a right upper longitudinal beam 41 and a right lower longitudinal beam 42. The upper support beam assembly module A is formed, the above-mentioned left lower longitudinal beam 32, right lower longitudinal beam 42, and front and rear cross beams 1 and 2 are welded integral parts and constitute the lower longitudinal beam assembly mo...

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Abstract

The invention relates to a steel-aluminum auxiliary frame. The steel-aluminum auxiliary frame is frame-shaped, and includes a front cross beam, a rear cross beam, a left longitudinal beam and a rightlongitudinal beam, wherein the left longitudinal beam and the right longitudinal beam are connected to the two ends of the front cross beam and the two ends of the rear cross beam respectively. A reinforcing cross beam is connected between the left longitudinal beam and the right longitudinal beam; the left longitudinal beam comprises a left upper longitudinal beam and a left lower longitudinal beam; the right longitudinal beam comprises a right upper longitudinal beam and a right lower longitudinal beam; the upper left longitudinal beam, the upper right longitudinal beam and the reinforcing cross beam are welded into a whole to form an upper supporting beam combination module, the lower left longitudinal beam, the lower right longitudinal beam, the front cross beam and the rear cross beamare welded into a whole to form a lower longitudinal beam combination module, and the connecting position of the upper supporting beam combination module and the lower longitudinal beam combination module is fixed through a fastener. Compared with the prior art, the structure complexity is reduced, the mold opening risk is reduced, the product defect rate is reduced, the longitudinal beam cavitystructure is simplified, and the risks of casting defects such as sand inclusion, air holes and shrinkage porosity of large products are reduced.

Description

technical field [0001] The invention relates to the field of automobile chassis components, in particular to a steel-aluminum auxiliary frame. Background technique [0002] The sub-frame is the skeleton of the front and rear axles and an important part of the car chassis. Its main function is to reduce the impact of road vibration on the car body, improve the connection stiffness of the suspension system, and improve the comfort and stability of the car during driving. , In addition, the sub-frame can also reduce the noise caused by the engine and road vibration, and improve the mute level in the car cabin. At this stage, passenger cars basically use steel subframes, and steel stamped plates are welded together by arc welding technology. Usually, the total length of welds for a steel subframe will reach about 10 meters. The stamping and welding process of the subframe is complicated, and it is easily affected by factors such as punching machine, mold, material, plate thickn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D21/02B62D27/02B62D27/06B62D29/00
CPCB62D21/02B62D27/023B62D27/065B62D29/007B62D29/008
Inventor 王贵民王洪彦薛丰盛李长顺
Owner NINGBO JIANXIN CHASSIS SYST
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