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A Segmentally Welded Variable Section Box Frame Longitudinal Beam

A technology of segmented welding and variable cross-section, applied in the field of auto parts, can solve the problems of difficult to guarantee dimensional accuracy, difficult to control the amount of stamping springback, and high mold investment, so as to reduce mold investment and welding process, and improve rigidity and strength. , the effect of lowering the center of gravity

Active Publication Date: 2016-06-29
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, high-performance off-road vehicles often adopt box-shaped longitudinal beams with variable cross-sections, but large-scale (longer than 4 meters) variable-section longitudinal beams often require high mold investment, complex stamping processes, and difficult control of stamping springback, resulting in poor dimensional accuracy. Difficult to guarantee, etc., can not meet the market demand

Method used

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  • A Segmentally Welded Variable Section Box Frame Longitudinal Beam
  • A Segmentally Welded Variable Section Box Frame Longitudinal Beam
  • A Segmentally Welded Variable Section Box Frame Longitudinal Beam

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Such as figure 1 As shown, the present invention includes a front longitudinal beam assembly, a middle longitudinal beam assembly, a rear longitudinal beam assembly, a front reinforced sealing plate and a rear reinforced sealing plate. Such as figure 2 As shown, the front longitudinal beam assembly is formed by lap welding of the wings of the channel-shaped front longitudinal beam outer panel 1 and the wing of the channel-shaped front longitudinal beam inner panel 2, and the wings of the front longitudinal beam inner panel 2 are formed on the Between the two wings of the outer sheet 1; such as image 3 As shown, the center stringer assembly is formed by lap welding of the wings of the channel-shaped center stringer outer sheet 5 and the channel-shaped center stringer inner sheet 6 wings, and the wings of the center stringer ...

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Abstract

The invention discloses a section-welded variable-section box-shaped longitudinal beam of a vehicle frame, which comprises three-section box-shaped longitudinal beams of a front longitudinal beam assembly, a middle longitudinal beam assembly and a rear longitudinal beam assembly. Each box-shaped longitudinal beam assembly is composed of two inner and outer grooved pieces welded together. One end of the inner piece of the front longitudinal beam extends outward to form a front reinforcement arm. Sleeve welding structure; one end of the inner piece of the rear longitudinal beam extends outward to form a groove-shaped rear reinforcement arm, and the upper and lower end surfaces of the rear reinforcement arm are lap-welded with the wings at the rear end of the outer section of the middle longitudinal beam to form a sleeve welding structure; the front longitudinal beam assembly Between the middle longitudinal beam assembly and between the middle longitudinal beam assembly and the rear longitudinal beam assembly, two inner and outer sealing plates are used to strengthen the welding. The joint is formed of a three-layer reinforced structure by the reinforcing arm and the inner and outer sealing plates, which improves the strength of the longitudinal beam. Rigidity and strength, suitable for off-road vehicles with longitudinal beams longer than 4 meters.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a segmentally welded variable-section box-shaped frame longitudinal beam. Background technique [0002] High-performance off-road vehicles need to have strong passing performance, require the vehicle to have a large ground clearance, and at the same time control the vehicle's handling, ride comfort, safety, etc. Passability and overall vehicle height, frame longitudinal beams often adopt a variable cross-section structure with a low middle and a high front and rear. In addition, off-road vehicles often drive in harsh working conditions such as mountainous areas and no roads, which require the frame and longitudinal beams to have sufficient strength and rigidity. Stronger bending and torsion resistance. Therefore, high-performance off-road vehicles often adopt box-shaped longitudinal beams with variable cross-sections, but large-scale (longer than 4 meters) variable-section l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D21/00
Inventor 黎波静大勇周忠胜王成云周振华文文
Owner DONGFENG MOTOR CORP HUBEI
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