Axle box cross connection type express freight car bogie

Abstract

The invention discloses an axle box cross connection type express freight car bogie. The bogie comprises an axle assembly, a framework, axle box suspension devices, a swing bolster, a foundation brakedevice, side bearings, an empty and load adjusting device and a central suspension device, the axle box suspension devices are installed at the two ends of the axle assembly respectively, the framework is located above the four axle box suspension devices, and the four axle box suspension devices are connected in a crossed mode through a crossed connection device; the cross connection device comprises two pull rods which are located below the swing bolster and arranged in a cross mode, and the two tail ends of each pull rod are hinged to an axle box suspension device of the bogie through elastic spherical hinges respectively. Constraint of the front wheel set and the rear wheel set is enhanced; the shearing rigidity between the wheel sets is increased, the snaking instability critical speed of the bogie is greatly increased, the axle box cross connection device can be suspended by adopting an axle box with soft rigidity, the operation stability is ensured, the head shaking constraintof the wheel sets can be released, the wheel rail acting force, wheel rail abrasion and operation noise are reduced, and the overall dynamic performance of the vehicle is improved.

Description

technical field [0001] The invention relates to the design technology of railway cargo transportation equipment, in particular to the design technology of the axle box cross-connected express freight car bogie, and belongs to the technical field of design and manufacture of railway vehicles. Background technique [0002] At present, the speed of the main bogies of railway freight cars in my country generally reaches 120km / h, but the higher speed is limited by the structure of the bogies. Large, severe wheel and rail wear, serious wear of the suspension device, the dynamic performance of the bogie deteriorates as the speed increases, the vehicle vibration acceleration increases, and the stability decreases. Simultaneously vehicle stability and safety also can't meet the requirement. With the increase of railway high value-added cargo transportation, especially the development of express container transportation, it is urgent to develop a fast freight car bogie with high speed...

AI Technical Summary

Problems solved by technology

[0002] At present, the speed of the main bogies of railway freight cars in my country generally reaches 120km / h, but the higher speed is limited by the structure of the bogies. Large, severe wheel and rail wear, serious wear of the suspension device, the dynamic performance of the bogie deteriorates as the speed increases, the vehicle vibration acceleration increases, and the stability decreases

At the same time, the stability and safety of the vehicle cannot meet the requirements

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