Ultra high speed test CRH (China Railway High-Speed) train 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, the problem of welding stress centralization is solved by a horizontal and longitudinal beam integrated type tray frame, and a wing-shaped elastic support arm of an elastic frame can have a damping effect by own elastic deformation. According to the novel bogie, by the aid of matching usage of the elastic frame and motor suspension devices with vibration absorption functions, high cut-down and inhibition effects can be realized on motor vibration, and accordingly, the vibration frequency control difficulty of a power system is reduced greatly and surplus vibration damping buffering components can be effectively cut down, so that redundant components can be simplified greatly, the structure dimension is shortened, and the weight is reduced. Master pin backward titling structures of traction wheel sets can swing consistently in S shapes. The ultra high speed test CRH train bogie can overcome inherent mutual contradiction of dual requirements on two aspects of lightweight design and speed lifting of a 500km / h ultra high speed train and is a novel breakthrough in the field of localization ultra high speed bogies.

Description

technical field [0001] The invention belongs to the field of rail vehicle bogie devices with elastic deformation buffering ability, and in particular relates to an ultra-high-speed test train bogie. Background technique [0002] According to the current rail vehicle division habit in our country, the 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 of the lap joint welding ...

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Problems solved by technology

[0009] In order to solve the problem that the existing large and heavy H-shaped overall rigid welding frame has a large number of welds, a long production cycle, strict requirements on the welding process, and once assembled and welded, it cannot be disassembled, which is inconvenient for maintenance, so it cannot adapt to the new The ultra-high-speed EMU puts forward the technical problem of miniaturization, light weight and the comprehensive requirements of a certain elastic damping capacity for its ultra-high-speed steering frame, and in order to solve the local stress at the connection position of the existing rigid suspension, The reliability is poor, so it is not suitable for installing heavy and high-power motors, and the rigid frame suspension directly transmits lateral vibration shocks to the motor, which affects the life of the motor

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