Connecting seat for side beam and cross beam of railway rapid freight car bogie

Abstract

The invention discloses a connecting seat for a side beam and a cross beam of a railway rapid freight car bogie. The connecting seat comprises an inner barrel part, a middle plate part and an outer barrel part; the inner barrel part and the outer barrel part form a cylindrical structure and are connected through the middle plate part which is a planar structure and has greater diameters than the inner barrel part and the outer barrel part; a welding groove is formed at the end of the inner barrel part; the inner barrel part and the outer barrel part have the same diameter; the thicknesses of the barrel walls of the inner barrel part and the outer barrel part are the same; the inner thickness of a barrel of the middle plate part is greater than the outer thickness of the barrel of the middle plate part; a weight reducing hole is formed in the middle of the middle plate part; a middle plate welding groove is formed at the periphery of the barrel outer part of the middle plate part; and awelding groove is arranged on one side of the edge of the barrel outer part of the middle plate part to form an incline surface with two grades. Compare with a lapping mode, that welding mode is morebeneficial to weld penetration and the welding defects are reduced; and with the adoption of respectively arranged welding grooves and a slope structure, stress mutation caused by overlarge change ofthe cross-sectional area of a welding joint can be effectively reduced, so as to ensure that the groove size is matched with a welded piece.

Description

technical field [0001] The invention relates to railway cargo transportation equipment, in particular to a side beam connecting seat of a bogie of an express freight car, and belongs to the technical field of railway vehicles and machinery. Background technique [0002] In April 2019, the National Railway Administration promulgated the new standard TB / T 3549.1-2019 "Code for Strength Design and Test Appraisal of Rolling Stock Bogies Part 1: Bogie Frame", which partially replaced the original TB / T 1335-1996 " "Code for Strength Design and Test Appraisal of Railway Vehicles" adds an empty car derailment assessment condition, and the assessment of the bogie frame of fast freight cars is more stringent. The common fast truck bogie frame side beam connection is mainly the direct welding connection between the tubular beam and the box side beam through openings, and the stress of the welded part is high, which makes it difficult to meet the new standard assessment requirements. ...

AI Technical Summary

Problems solved by technology

The common fast truck bogie frame side beam connection is mainly the direct welding connection between the tubular beam and the box side beam through openings, the welded part has a large stress, and it is difficult to meet the new standard assessment requirements

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