Manufacturing method of a steel runner automobile wind tunnel diffusion section

Abstract

The invention discloses a method for manufacturing a diffuser section of a steel runner automobile wind tunnel. The manufacturing method comprises: making a tire plate type tire frame; dividing the tire plate type tire frame into four regions, and manufacturing a first shell plate in each region, Make the corresponding first structure on the first shell plate, weld the first structure and the corresponding first shell plate to form the first segment; unload the first segment from the tire frame; on the same tire frame Make a second shell plate in each area of ​​the second shell plate, make a corresponding second structure on the second shell plate, weld the second structure and the corresponding second shell plate into a second segment; install a supporting tire frame on the second segment ; Lift the second segment and the supporting tire frame; assemble the lower segment and the upper segment to form the rear segment; make the front segment; assemble the front segment and the rear segment, and drill screw holes passing through the front segment and the rear segment. The beneficial effect of the invention is to ensure that the subsection manufacturing precision of the diffusion section of the steel runner meets the design requirements.

Description

technical field [0001] The invention belongs to the field of wind tunnel construction, and in particular relates to a manufacturing method of a steel runner automobile wind tunnel diffusion section. Background technique [0002] The automobile wind tunnel is a pipe used to generate artificial airflow (artificial wind), in which a section of air flow can be created evenly, and the automobile wind tunnel test is carried out in this wind tunnel. The wind tunnel comprehensive laboratory of China Automotive Engineering Research Institute introduced in this article is a real vehicle wind tunnel with a large size. The fan used to generate strong airflow in the wind tunnel of the actual vehicle is very large, with a diameter of up to 9m. The automotive wind tunnel project is complex in technology and high in construction costs. Compared with previous traditional steel structure projects, the requirements are much higher, and there is no corresponding construction experience to lea...

AI Technical Summary

Problems solved by technology

Each section needs to be divided into sections so that the size of each small section meets the transportation requirements, and the accuracy cannot be guaranteed by separate production

Since the segmented construction method is segmented manufacturing, the main size of the port assembly can be controlled at most after the segments are closed, and it cannot be guaranteed that all the screw holes of the flange correspond to each other.

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