Trailer bogie with built-in axle boxe of high-speed motor train unit

Abstract

The invention provides a trailer bogie with built-in axle boxes for a high-speed motor train unit, and relates to the technical field of motor train unit bogies. The bogie comprises a framework, a wheel set axle box device, a central suspension device and a basic brake device. An axle box assembly of the bogie and a side beam of a framework are both located on the inner side of a wheel set. The axle box assembly adopts a split type structural design. The axle box positioning is primary positioning pull rod positioning which is horizontally arranged. The primary rubber springs are two rubber conical springs with high bearing capacity. The basic braking device adopts a mode of combining wheel disc braking and shaft disc braking. The central traction device adopts a longitudinally-arranged single rubber pile. The two anti-side-rolling torsion bars are located on the lower portion of a framework cross beam. The whole bogie is compact in structure, and the transverse size of the bogie meetsthe operation requirement of a small limit. The running speed of the bogie can reach 250 km / h, the maximum axle load is 19 tons, and the running requirements for high speed and high bearing capacitycan be met.

Description

technical field [0001] The invention relates to the technical field of a train bogie, in particular to a trailer bogie with a built-in axle box for a high-speed train set. Background technique [0002] At present, the bogies of existing high-speed EMUs in my country all adopt the traditional axle box external bogie, that is, the axle box is located on the outside of the wheel set, and the frame side beam is located on the outside of the wheel set. This kind of axle box external bogie has a large lateral dimension, and is suitable for running on high-speed rail lines with large vehicle limits. However, for some European countries (such as the United Kingdom), the railways have a history of more than 100 years, the old railway lines are complex and the vehicle limits are small, so for high-speed EMUs, these existing lines must meet a small limit Require. Due to the limitation of the overall structure and layout of the bogie, there is no room to reduce the lateral size of the...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the existing axle box external bogie cannot meet the operating requirements of a smaller limit, and the existing axle box built-in bogie cannot meet the high-speed and high-carrying capacity operating requirements, the invention provides a high-speed EMU axle The box-built-in trailer bogie not only reduces the lateral size of the bogie, but also enables the EMU to pass through a smaller limit, and can also meet the operating requirements of high speed and high carrying capacity

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