Light bogie welding framework and welding method thereof

Abstract

The invention discloses a light bogie welding framework and a welding method thereof. The design of further simplifying a structure and reducing the weight of the structure is adopted, and a modularized welding method is adopted simultaneously, so that the aim of the light structure and the aim of improving the whole processing and production efficiency are fulfilled. The framework comprises a pair of side beam assemblies and a pair of cross beam assemblies which are connected with each other; each side beam assembly has a hollow box body structure and comprises a pair of upper and lower cover plates and a pair of side web plates which are welded; the cross beam assemblies comprise a pair of hollow steel pipes which penetrate through the side web plates and are welded with the side web plates; and a pair of air spring supporting beams are welded at the ends of two sides of the steel pipes and outside the side web plates and have a hollow box body structure.

Description

technical field [0001] The invention relates to an improvement related to the overall structure and processing method of a bogie frame of a rail vehicle, and belongs to the field of mechanical manufacturing. Background technique [0002] With the substantial speed increase of domestic trunk railways and the rapid development of urban rail transit, it is required to optimize the design of vehicle bogie frames while taking into account both light weight and structural strength. [0003] The existing bogie frame usually adopts a strengthened structure, and the components and the suspended equipment are connected by a relatively complicated structure. The disadvantage is that the weight is relatively large, and the space occupied by the external installation and load-bearing components is large, which is not conducive to the light weight of the frame itself. Design and vehicle speed improvements. [0004] In addition, the following prior patent application, application number 2...

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Problems solved by technology

[0006] Although the above-mentioned patent attempts to simplify the connection structure between the beams by adopting the welding connection method, the effect of lightweight improvement is not obvious, because:

[0007] 1. The frame structure formed by side beams and end beams is not only heavy, but also does not have high flexibility when the vehicle runs at high speed and passes through large bending angles.

[0008] 2. The welding process of the overall structure of the frame is still complicated, no modular assembly method has been formed, and the production efficiency is low

[0009] 3. For example, the basic brake mounting seat, the air spring support seat, etc. are still integrated with the beam or side beam until the structure is not conducive to the lightweight and optimized design of the overall structure

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