Wheel set for variable gauge bogie for railway vehicles and bogie

Abstract

The invention relates to the field of variable gauges of railway vehicles, and discloses a wheel set for a variable gauge bogie for railway vehicles and the bogie. The wheel set comprises wheels, an axle and locking assemblies. A hub of each wheel and outside the wheel extends to form a connecting sleeve, the inner circumference of the hub of each wheel and / or the inner circumference of each connecting sleeve is provided with an internal spline, and two ends of the axle are respectively provided with an external spline matched the inner splines. The wheels and the axle are connected through the external splines and the internal splines. The locking assemblies are press fitted on the outer circumferences of the connecting sleeves of the wheels and located in axle box bodies at two ends of the axle. The locking assemblies are used for driving the wheels to move in the axial direction of the axle box bodies or locking to achieve gauge variation of the wheels. The wheel set can ensure theoriginal arrangement of bogie parts of a high-speed EMU to the utmost extent, so as to improve versatility and reliability of the variable gauge bogie for the railway vehicles.

Description

technical field [0001] The invention relates to the technical field of rail vehicle gauge change, in particular to a wheel set and a bogie for a rail vehicle gauge change bogie. Background technique [0002] In order to meet the transportation requirements between tracks of different gauges in neighboring countries, bogies with different inner distances of wheel sets are often replaced at the junction. This solution is costly and time-consuming. Spain and Japan successively invented variable-gauge bogies, which can run continuously between tracks of different gauges. [0003] The variable gauge bogie in Spain adopts the form of independent wheel sets, which requires additional guide structure, which is complex in structure; the variable gauge bogie in Japan sets the sliding mechanism on the inner side of the wheel, and adds an outer wheel to the outside of the axle. The sleeve is equivalent to increasing the diameter of the axle, thereby limiting the design space of the mot...

AI Technical Summary

Problems solved by technology

[0003] The variable gauge bogie in Spain adopts the form of independent wheel sets, which requires additional guide structure, which is complex in structure; the variable gauge bogie in Japan sets the sliding mechanism on the inner side of the wheel, and adds an outer wheel to the outside of the axle. The sleeve is equivalent to increasing the diameter of the axle, thus limiting the design space of the motor and gearbox, and putting forward higher requirements for the gearbox bearings, increasing the cost and reducing the service life

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