Elastic frame of super high speed EMU bogie

Abstract

The invention relates to an ultra high speed test CRH train bogie and belongs to the field of railway vehicle bogie devices with elastic deformation buffering capacity, and the problem that stress is easy to concentrate when the diameter of a horizontal beam changes and a lap joint is welded can be solved in the manner that an old structure of lap joint and group welding of a side beam and a horizontal beam of an H-shaped rigid welding frame is replaced with a horizontal and longitudinal beam integrated type tray frame. By the aid of a new assembly manner of second auxiliary pillow springs, side beams, side beam installation bases and the horizontal and longitudinal beam integrated type tray frame in an assembly relationship sequentially, and the total number of welding seams can be effectively cut down, so that the production efficiency is improved and the strict requirement for welding seam quality can be moderately reduced while the structural strength is guaranteed, and the yield is increased accordingly. A wing-shaped elastic support arm of an elastic frame can have a damping effect by own elastic deformation, a part of original additional frame elastic components can be replaced and cut down by the aid of matching usage of the wing-shaped elastic support arm and the second auxiliary pillow springs, and a foundation is further laid for reducing frame dimension and frame weight.

Description

technical field [0001] The invention belongs to the field of rail vehicle bogie frame devices with elastic deformation buffering capacity, and in particular relates to an elastic frame of a bogie for an ultra-high-speed EMU. Background technique [0002] According to my country's current rail vehicle classification standards, train models with a speed exceeding 500km / h are usually called ultra-high-speed trains. The bogie of this type of traditional rail train is generally a rigid frame welded by H-shaped steel girders. The H-shaped rigid welded frame is composed of two side beams and a beam welded. A box-shaped structure with a rectangular cross-sectional outline welded by multiple steel plates, while side beams are usually box-shaped structures welded by multiple steel plates. Due to the limited structural space of the connection between the beam and the side beam of the old H-shaped rigid frame, the butt joint welding part of the two generally adopts the transition piece...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the existing large and heavy H-shaped overall rigid welding frame, the total number of welds is large, the production cycle is long, the requirements for welding process are harsh, and once assembled and welded, it cannot be disassembled, which is not convenient for maintenance, so it cannot adapt to the new The ultra-high-speed EMU for its ultra-high-speed bogie frame puts forward the technical problem of miniaturization, light weight and the comprehensive requirements of a certain elastic damping capacity. The invention provides an ultra-high-speed EMU bogie elastic frame

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