Rail vehicle traction beam

Abstract

The invention relates to a traction beam for railway vehicles. The traction beam has a hollow opening box type integral structure, and parts of the integral structure have multiple light-weight design characteristics, so that the integral structure has both structural rigidity and light weight. The light-weight design is realized to the maximum limit on the premise of ensuring the structural rigidity and connection strength of the traction beam, so that the running speed of the railway vehicles is easy to accelerate. The traction beam comprises a pair of traction beam webs, an upper cover plate, a lower cover plate and a vehicle coupler mounting plate, wherein the two traction beam webs are in welding connection with the upper cover plate and the lower cover plate respectively to form a box type structure of which the cross section is in an opening shape and the sectional area is reduced gradually from one end to the other end; and the vehicle coupler mounting plate is connected to one end of the box type structure. According to the traction beam, an integral structural frame of the traction beam is formed by welding the traction beam webs, the upper cover plate and the lower cover plate, so that the opening box type structure has both light weight and structural rigidity.

Description

technical field [0001] The invention is aimed at the improvement of the traction beam structure applied to rail vehicles, and belongs to the field of mechanical manufacturing. Background technique [0002] With the rapid popularization and promotion of domestic urban rail transit, higher design and use requirements are put forward for the traction beam which constitutes the main part of the drive system. [0003] For example, the traction beam used in light rail trains and subways is the central component that connects and transmits the driving force of the bogie to the car body, and is also the key equipment for power transmission to achieve fast and safe driving of the vehicle. The existing traction beam generally adopts a solid frame structure, the purpose is to increase the overall rigidity, but it also increases the weight of the traction beam itself from the other side, which is not conducive to the lightweight design of the car body and the improvement of the running ...

AI Technical Summary

Problems solved by technology

The existing traction beam generally adopts a solid frame structure, the purpose is to increase the overall rigidity, but it also increases the weight of the traction beam itself from the other side, which is not conducive to the lightweight design of the car body and the improvement of the running speed of the train

[0004] Moreover, the stress after the traction beam is connected with the bolster and side beam under the car body is relatively concentrated, which is easy to cause the stress concentration of the traction beam and increase the probability of stress damage, thereby significantly shortening the service life of the traction beam

[0005] In addition, there is also the complicated problem of installation and connection between the draw beam and the coupler, which is not conducive to the painting operation from the inside of the draw beam and reduces the operability of the draw beam anti-corrosion treatment

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