Novel power bogie assembly for D-series high-speed train at speed of 250 km/h

Abstract

The invention discloses a novel power bogie assembly for a D-series high-speed train at a speed of 250 km / h. The power bogie assembly is characterized in that a single anti-yaw absorber interface is formed in an anti-yaw absorber, and a secondary vertical absorber base and a framework side beam torsion bar mounting base capable of preventing side rolling are both of cylindrical nut structures; aluminum alloy gear boxes are adopted as driving devices, and four temperature sensors are arranged on the corresponding parts of four bearings of the gear boxes; a bogie is connected with a train body through linked sleeper beams, the anti-yaw absorber base and the torsion bar mounting base capable of preventing side rolling are arranged on the linked sleeper beams and both connected with the sleeper beams through bolts, and train body apron board hoisting point grooves are designed at both sides of each linked sleeper beam; a carbon power collecting cavity is formed in each grounded end, shaftend transition covers are tightly fitted and fixedly connected with the surfaces of shaft box end front covers, a running speed sensor adopts an ATP / LKJ mode, and a mobile plate structure mounted through four holes is adopted at each shaft end. By simplifying the structure of the bogie, more convenience is provided for application, maintenance and overhaul, modular design of components is achieved, and the applicability of a product is improved; through application of an EN standard and an actually measured load spectrum optimization structure of the D-series high-speed train, the reliabilityof key components is improved.

Description

technical field [0001] The invention relates to a rail vehicle power bogie, in particular to a new lightweight 250km / h EMU power plant with high parts interchangeability, good manufacturing processability, convenient operation, maintenance and repair, and meeting the requirements for operational performance. bogie. Background technique [0002] The structure and dynamic parameters of the existing CRH380B series EMU CW400D power bogie are mainly designed and developed for a speed of 300-380km / h. There is a certain gap between the dynamic performance index in the / h interval and the speed of 300-350km / h. [0003] Components such as the anti-snake shock absorber are all designed with redundancy in mind. At the same time, in order to meet the operation requirements of the 300km / h line, affected by the ground return device, various sensors (including anti-skid, traction, etc.) and the length of the cable, the structure of the shaft end It is more complicated, and the shaft end ...

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Problems solved by technology

[0003] Components such as the anti-snake shock absorber are all designed with redundancy in mind. At the same time, in order to meet the operation requirements of the 300km / h line, affected by the ground return device, various sensors (including anti-skid, traction, etc.) and the length of the cable, the structure of the shaft end It is more complicated, and the shaft end grounding return device of the existing EMU in the form of axial friction is generally an open contact return type without a carbon powder collection structure. The carbon powder not only pollutes the shaft end, but also easily enters the inside of the bearing, causing Grease dries out, shaft temperature rises

In addition, some EMU shaft end grounding backflow devices have abnormal wear of friction discs and carbon brushes, which affects the normal operation order of EMUs and increases the workload of operation and maintenance

Secondary suspension components (such as anti-roll torsion bars, secondary vertical shock absorbers, etc.) and the structure of the threaded hole structure at the joint position will easily cause thread damage that is difficult to repair after repeated disassembly and assembly

The above reasons lead to a single frame type, and the frame is not easy to repair and maintain; moreover, the quality level of the welding seam is generally high, which increases the difficulty of process implementation and increases the welding cost.

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