Central beam assembly applicable to railway wagon having large weight-concentrating capability

Abstract

The invention discloses a central beam assembly applicable to a railway wagon having a large weight-concentrating capability. The central beam assembly is characterized by comprising two abdominal central beams made of H-type steel, wherein an inner interval of two web plates of the central beams is 400-600mm; the web plates are connected through a central beam separating plate; the height of an abdominal part of each of the central beams is above 700mm and is gradually reduced toward two ends; inner towing beams shaped like a Chinese character 'ji' are nested between the web plates at two ends of the central beams; and the inner interval of the inner towing beams is 350mm. According to the invention, the two abdominal central beams made of H-type steel and the nested hat-shaped inner towing beams are installed and welded into a nested double-web plate central beam structure, the interval of web plates of the two abdominal central beams can be increased to 400-600mm, the effect of using large-size structural steel with wider winged edges as the central beams is realized, and an operation space for welding the central beam separating plate is ensured; and through installing and welding of large-size structural steel central beams, the central beams can achieve higher stiffness and strength and are applicable to the railway wagon having a 80t or 90t weight-concentrating capability. The nested hat-shaped inner towing beams are used for realizing mounting and barffing of a 350mm wagon coupler buffering device.

Description

technical field [0001] The invention relates to a middle girder structure for railway freight cars, which is suitable for car bodies with large load-collecting capacity, and can increase the load-collecting capacity of the vehicle from 70t to 80t or 90t. Background technique [0002] With the leap-forward development of "speed, density, and weight", railway freight cars have achieved technical upgrades from 60t to 70t, and are developing towards 80t and even 90t. The performance requirements of the vehicles are getting higher and higher. Moreover, in order to give full play to the advantages of long railway transportation distance and low energy consumption to promote the progress of the logistics industry, the loading range of railway freight cars is also expanding, and high-density goods such as generator rotors and large steel coils continue to enter railway transportation This puts forward higher requirements for the weight-collecting capacity of railway freight cars. Th...

AI Technical Summary

Problems solved by technology

[0005] Limited by the strength and stiffness of the center sill, existing trucks can only increase the overall rigidity of the car body by increasing the section of the side sill accordingly. Often the side sill is as high as the section of the center sill, which causes the problem that the space between the lower part of the side sill and the limit is too large. Small size, it is not convenient for train inspectors to enter under the train for inspection, which has a great impact on the efficiency of train inspection work, and has become a typical problem for large-scale railway freight cars

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