Assembly method of center beam and corbel beam of railway freight car underframe

Abstract

The invention provides an assembling method for a centre sill and a body bolster of an underframe of a railway wagon. The centre sill comprises an assembling area and a non-assembling area, wherein the assembling area is assembled with the body bolster, and the non-assembling area is arranged outside the assembling area. The assembling method comprises the following steps: pressing to bend the centre sill lower cover plate of the assembling area of the centre sill so as to enable the centre sill lower cover plate to have a bottom face and a bent face with preset bending height; pairing centre sill parts and welding into the centre sill; pairing body bolster parts and welding into the body bolster; in the non-assembling area of the centre sill, from the side edge of the centre sill, inserting the body bolster web plate of the body bolster between the centre sill upper cover plate and the centre sill lower cover plate of the centre sill into an assembly state; along the centre sill, moving the body bolster to the assembling area from the non-assembling area; and connecting and fixing the body bolster with the centre sill. The assembling method for the centre sill and the body bolster of the underframe of the railway wagon is capable of improving the assembling efficiency and quality of the centre sill and the body bolster.

Description

technical field [0001] The invention relates to mechanical technology, in particular to an assembly method of a center beam and a corbel of a vehicle underframe. Background technique [0002] The underframe of a heavy-axle truck includes corbels, beams and middle beams, etc. figure 1 It is a schematic structural view of the center beam in the underframe of the railway freight car in the prior art, figure 2 It is a structural schematic diagram of a corbel in the underframe of a railway freight car in the prior art. Wherein, the center sill includes a center sill upper cover plate 11, a center sill lower cover plate 12, and a center sill web 13. The center sill lower cover plate 12 has a bottom surface 121 and a bent surface 122. The bottom surface 121 is connected to the center sill upper cover plate 11. A first distance 14 is formed between them, and a second distance 15 is formed between the bent surface 122 and the center sill upper cover 11 . The corbel includes a cor...

AI Technical Summary

Problems solved by technology

[0005] The technical defects of the above-mentioned prior art are: the way of flame simmering not only increases additional workload and cost, but also has low assembly efficiency; moreover, after flame heating, the stress in some areas of the lower cover plate of the center sill increases, and the quality is seriously reduced , affecting the performance of the entire center beam and even the underframe

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