Special D-shaped support pipe

A font and special-shaped technology, applied in the field of special-shaped square and rectangular pipes, can solve the problems of limited cross-sectional performance, many processing and welding links, and complicated installation processes, and achieve the effect of broadening the scope of use and increasing the variety of products.

Inactive Publication Date: 2015-03-11
杜伟
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Problems solved by technology

[0002] At present, the existing commercial vehicles play a supporting role in supporting the auxiliary sub-frame and sub-frame frame, which are designed and manufactured by single-layer C-shaped steel or multi-layer C-shaped steel combination. The structure is simple, the section moment of inertia is small, the section performance is limited, and there are many processing and welding links. , the finished product rate is low, and the installation process is complicated. At the same time, many industries require to increase the moment of inertia of the section without changing the shape, or to reduce the mass in the existing space. Ordinary profiles cannot meet the development of the existing field, and a suitable range is needed. Wider profiles to replace

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  • Special D-shaped support pipe

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Embodiment Construction

[0009] D-shaped tube for special-shaped support, including a whole piece of carbon steel plate that is cold-bent into a D-shaped shape, and a welding seam (5) is arranged at the seal of the steel plate. The welding forms include online high-frequency continuous welding, submerged arc continuous welding, and laser welding. Continuous welding and gas shielded continuous welding, the welding form is selected according to the thickness and material of the steel plate. ), the radius of the outer arc (1) is 2 to 4 times the wall thickness of the steel plate; the four corners of the inner contour of the D-shaped pipe wall are all inner arcs (2), and the radius of the inner arc (2) is the steel plate 1~2.5 times of the wall thickness; the width (8) of D-shaped tube and square tube part is 60mm~420mm, the range of height (7) is 60mm~500mm, and the width of D-shaped tube and square tube part (8) The height (7) ratio is 1:0.5~1:3.5; the value of the inner arc (4) of the R-shaped part is ...

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Abstract

The invention discloses a specially-shaped square pipe which is produced by a cold bending online continuous production process and bending a single plate and is used for supporting commercial vehicles. By the specially-shaped square pipe, the problems of simple structure, small section inertia moment, limited section performance, a plurality of processing and welding processes, low yield and complex mounting process of the existing ordinary profiles are solved. The specially-shaped square pipe comprises a steel plate which is coldly and wholly bent to be D-shaped, wherein a welding seam (5) is arranged in a butt joint connector of the steel plate; the section of the steel plate is D-shaped. According to the specially-shaped square pipe, the continuous roll bending forming of a cold bending and welding pipe unit is adopted, and the production processes of online welding and shaping, and online sawing, bending a single plate and offline welding and shaping by a bending machine are adopted.

Description

technical field [0001] The invention relates to a special-shaped steel that replaces a square-rectangular pipe, in particular to a special-shaped square-rectangular pipe for commercial vehicles that is produced by a cold-bending on-line continuous process and produced by bending a single piece. Background technique [0002] At present, the existing commercial vehicles play a supporting role in supporting the auxiliary sub-beam and the sub-beam frame, which are designed and manufactured by single-layer C-shaped steel or multi-layer C-shaped steel combination. The structure is simple, the section moment of inertia is small, the section performance is limited, and there are many processing and welding links. , the finished product rate is low, and the installation process is complicated. At the same time, many industries require to increase the moment of inertia of the section without changing the shape, or to reduce the mass in the existing space. Ordinary profiles cannot meet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16S3/00
Inventor 杜伟宋宇光
Owner 杜伟
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