Novel high-speed motor train unit non-power bogie

Abstract

The invention relates to a novel high-speed motor train unit non-power bogie. The novel high-speed motor train unit non-power bogie comprises a framework, a wheel pair, a primary fastening suspension device, a secondary fastening suspension device, a traction device and a foundation brake device, wherein a crossbeam and side beams of the framework respectively adopt a box-type structure formed by welding steel plates, a main body consists of two side beams and a crossbeam, the crossbeam and each side beam are respectively formed by welding steel plates, the crossbeam and each side beam are respectively provided with various functional seat in a welding manner, the crossbeam and each side beam are connected with each other in a plugging manner, an upper cover plate and a lower cover plate of each side beam extend inwards, a side vertical plate of the crossbeam is directly inserted in the extension position of the upper cover plate and the lower cover plate of the side beam and directly connected with the inner vertical plate of the side beam, the lower cover plates of the crossbeam and each side beam are directly connected with each other in a welding manner, and the upper cover plates of the crossbeam and the side beams are connected in a variable cross section manner by virtue of a transitional connecting block; a small longitudinal beam is welded on the crossbeam, and brake beam is connected with the upper cover plate of the crossbeam and the small longitudinal beam in welding manner. The bogie is simple in structure, so that the application, maintenance and repairing can be facilitated; the modularized and uniform design of parts can be realized, so that the applicability of products can be improved, and the fatigue service life of the bogie can be prolonged.

Description

technical field [0001] The invention relates to a non-power bogie for a rail vehicle, in particular to a new non-power bogie for high-speed standard EMUs with high parts interchangeability, convenient operation and maintenance, and meeting performance requirements. Background technique [0002] With the development of high-speed railways, the types of vehicles are increasing day by day, the operation and maintenance management is difficult, and the maintenance cost is high. High requirements, at the same time have a greater impact on vehicle dynamics. Therefore be badly in need of inventing a kind of non-powered bogie of new high-speed standard EMU with high interchangeability of parts, easy operation and maintenance to meet the performance requirements of the application. [0003] The existing high-speed EMU non-power bogie usually includes a welded H-shaped frame, and two wheel-to-axlebox devices are arranged under the frame. The frame and the wheel-set are connected by a...

AI Technical Summary

Problems solved by technology

The overall structure of the above-mentioned bogie is complex, the weight is relatively large, and the space occupied by the external installation and bearing parts is large, which is not conducive to the lightweight design of the bogie itself and the improvement of vehicle speed

Among them, the H-shaped welded frame is usually composed of two side beams and a cross beam. The beam is composed of round steel pipes. Due to the structural shape of the connection between the round steel pipe and the side beam is limited, and the cross section of the joint changes greatly, it must pass through the transition piece. When the beam is connected with the side beam, the joint is likely to produce a large stress concentration. This kind of structure has poor resistance to torsional deformation. At the same time, most of the other parts of the round steel pipe are welded in the lap joint type. Improper lap joint angles are likely to cause welding quality problems. , Welding process is not good

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