Bogie for goods train with large axle load and low dynamic action

Abstract

The present invention provides a lorry bogie of large axle load and low power. The bogie comprises a wheel pair, a side frame, a swinging pillow, an axle box, a basic braking device, a single-stage suspension device, a two-stage suspension device and a side bearing. The side frame is arranged on the wheel pair through the single-stage suspension device, so that the side frame becomes the sprung mass; the swinging pillow is arranged on the side frame through the two-stage suspension device; the side bearing is arranged on the swinging pillow; the basic braking device is hanged on the swinging pillow, so as to become the sprung mass; the two-stage suspension device is a linking mechanism of a cylindrical rubber spring and a steel circular spring, and is arranged in the space which is formedby the bottom chord of the side frame and the lower part of the terminal of the swinging pillow; a pre-tightening rubber pad is arranged between the upper part of the terminal of the swinging pillow and the top chord of the side frame. The structure is simple; the strength reserve of the swinging pillow, the side frame and other key components is further improved; and the lorry bogie satisfies the requirement for increasing the axle load, reduces the unsprung mass, reduces the action of the wheel rail, realizes the low-power action, and improves the vehicle running quality.

Description

technical field [0001] The invention relates to a railway freight car bogie which is required to have the function of large axle load and low power action, and belongs to the technical field of railway freight car bogies. Background technique [0002] At present, the axle load of railway freight car bogies has reached 25t-40t. It is the development trend of railway freight transportation in various countries in the world to develop bogies for large-axle-loaded freight cars and run heavy-duty freight trains. The design principles of the bogie with large axle load and low dynamic effect are: (1) reduce the unsprung mass of the bogie, reduce the force of the wheel and rail action, improve the curve passing ability of the vehicle, and reduce the wear of the wheel and rail; (2) increase the anti diamond stiffness of the bogie , improve the stability of the bogie and increase the running speed of the empty car; (3) simple structure, convenient maintenance and low maintenance cost...

AI Technical Summary

Problems solved by technology

At present, most of the truck bogies adopt the dry friction wedge damping system. The disadvantage of this system is that when the wedge wears out, the performance of the vehicle decreases, the maintenance period is short, and the structure is complicated.

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