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Vehicle auxiliary frame structure and mounting method thereof

An installation method and sub-frame technology, applied in the field of vehicle parts, can solve problems such as connection structure failure, weld cracking, and stress concentration at the end of the weld, so as to reduce weld cracking, improve practicability, and avoid welding The effect of end stress concentration

Active Publication Date: 2018-07-10
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the welding process and the structure of the sheet metal parts, especially the stress concentration at the end of the weld, it is easy to crack the weld when the road conditions are complex, and cause the connection structure to fail, and even cause serious accidents

Method used

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  • Vehicle auxiliary frame structure and mounting method thereof
  • Vehicle auxiliary frame structure and mounting method thereof
  • Vehicle auxiliary frame structure and mounting method thereof

Examples

Experimental program
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Embodiment 2

[0040] This embodiment relates to a method for installing the subframe structure of a vehicle as described in Embodiment 1. The method includes the following steps:

[0041] a), place the upper side plate on the lower side plate, and align the two mounting holes and fully contact the lower surface of the flange 10 with the welding surface 1011, and connect the swing arm to the mounting hole 3 through the bolt assembly On the upper side plate 4 and the lower side plate 1;

[0042] b) welding along the outer edges of the pasted flanging 10 and protrusion 11 and the overlapping surface 1011 by carbon dioxide shielded welding equipment to form the main weld 12 and the secondary weld 13;

[0043] c) At the spot welding position 14, the protrusion 11 and the lower side plate 1 are clamped by spot welding equipment, and the protrusion 11 and the lower side plate 1 covered by the protrusion 11 are spot welded to complete the connection process.

[0044] Using the method described in ...

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Abstract

The invention provides a vehicle auxiliary frame structure and a mounting method thereof. The vehicle auxiliary frame structure is provided with an upper edge plate, a lower edge plate and a connecting part, wherein the connecting part is integrally formed at the bottom of the upper edge plate, and the connecting part and the lower edge plate are arranged in an attached mode. The connecting part and the lower edge plate are connected in a welded mode to form a welded joint, the connecting part comprises a main connecting part body and an auxiliary connecting part body which is formed on at least one end portion of the main connecting part body, the welded joint comprises a main welded joint body following the main connecting part body in shape, and an auxiliary welded joint body, the auxiliary welded joint body follows the auxiliary connecting part body in shape due to guiding of the auxiliary connecting part body, and the auxiliary welded joint body and the main welded joint body forman inflection point at an intersection place. The vehicle auxiliary frame structure further comprises a point welding position located between the auxiliary connecting part body and the lower edge plate so as to form point welding connection between the auxiliary connecting part body and the lower edge plate, and the auxiliary welded joint body and point welding connection are simultaneously formed between the auxiliary connecting part body and the lower edge plate, so that welded joint connection and point welding connection jointly bear stress from the outside, the situation of stress concentration at the tail end of the welded joint can further be avoided, and the phenomenon of cracking of the welded joint is reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle parts, in particular to a vehicle sub-frame structure. The invention also relates to a method for installing the subframe structure of the vehicle. Background technique [0002] In the field of automobile manufacturing technology, it is often necessary to weld and connect body parts (such as sheet metal parts and chassis parts). The bottom edge of the upper side plate may be overlapped to the lower side plate and welded along the lapped edge to form a weld of a certain length. Due to the welding process and the structure of the sheet metal parts, especially the stress concentration at the end of the weld, it is easy to crack the weld when the road conditions are complex, and cause the connection structure to fail, and even cause serious accidents. Contents of the invention [0003] In view of this, the present invention aims to propose a vehicle subframe structure to form the connection betwee...

Claims

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Application Information

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IPC IPC(8): B62D21/00B62D24/00
CPCB62D21/00B62D24/00
Inventor 常星亚王俊付敬阳宋东
Owner GREAT WALL MOTOR CO LTD
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