Flat wagon center sill

Abstract

The invention relates to a flat wagon center sill. The flat wagon center sill is characterized by comprising two supporting plates, a continuous upper cover plate and a dovetail-shaped lower cover plate, wherein the upper cover plate and the lower cover plate are welded on the upper and lower end faces of the two supporting plates respectively to form a box body, and two ends of the box body form two traction beams of the flat wagon center sill; in the box body, a plurality of inner clapboards are welded between the upper cover plate and the lower cover plate; a butterfly connector and an upper center plate are sequentially welded at the installation position of a center plate of each traction beam; and a rear draft lug and a front draft lug are welded in the cavities of the traction beams respectively. The two supporting plates are made into a fish belly type structure, the upper cover plate and the lower cover plate are welded on the upper and lower end faces of the two supporting plates to form the box body, and the plurality of inner clapboards are welded in the box body to form a plurality of small box bodies, so the integral stress intensity coefficient of the flat wagon center sill is greatly improved. The flat wagon center sill can be widely applied in the field of railway wagon transportation.

Description

technical field [0001] The invention relates to a center beam structure, in particular to a flat car center beam used in the field of railway freight car transportation. Background technique [0002] There are about 21,000 shared flat cars in China. A traditional center beam structure is adopted. When the fish belly is made of H-shaped steel or I-shaped steel, the large arc transition is not used at the bend, and the lower flange of the traction beam is used. There is no overlap with the slave plate seat, so the stress distribution of the traction beam is unreasonable and the overall strength is low. At present, in order to solve this problem, a rectangular reinforcing plate 1 and a front and rear big eight-character reinforcing plate 2 (such as figure 1 As shown), this structure makes the structure of the center beam complex, but this manufacturing process is difficult, with many and crossed welds, and the fatigue life level is low. Contents of the invention [0003] In...

AI Technical Summary

Problems solved by technology

[0002] There are about 21,000 shared flat cars in China. A traditional center beam structure is adopted. When the fish belly is made of H-shaped steel or I-shaped steel, the large arc transition is not used at the bend, and the lower flange of the traction beam is used. There is no overlap with the slave plate seat, so the stress distribution of the traction beam is unreasonable and the overall strength is low

At present, in order to solve this problem, a rectangular reinforcing plate 1 and a front and rear big eight-character reinforcing plate 2 (such as figure 1 As shown), this structure makes the structure of the center beam complex, but this manufacturing process is difficult, with many and crossed welds, and the fatigue life level is low

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