Light-weight bolster for urban rail trains

Abstract

The invention relates to a light-weight bolster for urban rail trains. A hollow square box type integral structure is used, and various weight lightening design features are adopted for parts of the bolster, so that structural rigidity and weight lightening are both considered, and running speed of urban rail trains can be increased. The bolster comprises an upper cover plate, a lower cover plate and an abdominal plate vertically connected between the upper cover plate and the lower cover plate, and the abdominal plate, the upper cover plate and the lower cover plate are welded to form the square box structure. Air-spring cushion plates and a traction pin cushion plate are welded to the surface of the lower cover plate, wherein the air-spring cushion plates are used for bearing vertical load of an integral vehicle, and the traction pin cushion plate is used for bearing longitudinal load of the integral vehicle. The abdominal plate, the upper cover plate and the lower cover plate are welded to form an integral structural frame of the bolster, and weight lightening and structural rigidity can be both well considered by means of the square box structure.

Description

technical field [0001] The invention aims at lightening and improving the corbel structure applied to urban rail trains, and belongs to the field of machinery manufacturing. Background technique [0002] With the current rapid popularization and popularization of domestic urban rail transit, higher design and use requirements are put forward for the corbel, which constitutes the main part of the car body. [0003] The corbel used in light rail trains and subways is a key component for connecting and carrying the car body and the bogie, and is also the main part of the driving force transmission between the car body and the bogie. Existing corbels generally adopt a solid frame structure, the purpose is to increase the overall rigidity, but also increases the weight of the corbel itself from the other side, which is not conducive to the lightweight design of the car body and the improvement of train running speed. [0004] Moreover, the stress after the corbel is connected wi...

AI Technical Summary

Problems solved by technology

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

[0004] Moreover, the stress after the connection between the bolster and the traction beam and side sill of the car body chassis is relatively concentrated, it is easy to cause stress damage to the bolster and shorten its service life

[0005] In addition, there are defects such as the complex connection structure between the corbel beam and other components (such as corrugated floors), which results in a tight installation space under the vehicle, which is not conducive to the compact design and layout of equipment and components under the vehicle

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