Hydraulic self-adjusting bogie for railway vehicles

Abstract

The invention discloses a hydraulic self-height regulating bogie of a railway vehicle. The hydraulic self-height regulating bogie of the railway vehicle comprises two wheel sets, axle boxes symmetrically arranged on the two sides of each wheel set, side frames arranged on the upper portions of every two axle boxes on the same sides, a swing bolster arranged between the side frames on the two sides, elastic side bearings symmetrically arranged on the swing bolster and a basic braking device; the two ends of the swing bolster are located on lower chords of the side frames through swing mechanisms, a bottom center disc is arranged in the center of the swing bolster, the basic braking device is hung on a cantilever beam of the swing bolster through a braking boom, a load spring is arranged between the middle of each axle box and a guide frame of the corresponding side frame, and self-height regulating devices are arranged on the two sides of each load spring respectively. According to the hydraulic self-height regulating bogie, the load vehicle height of the vehicle is regulated to be increased by additionally arranging the self-height regulating devices between the axle boxes and the corresponding side frames, therefore, the center disc height of the empty vehicle and the center disc height of the load vehicle basically keep consistent, and not only can the hidden danger that a coupler is fractured due to a height difference between couplers of the empty vehicle and the load vehicle be avoided, but also working deflection of spring hanging can be improved.

Description

technical field [0001] The invention relates to a railway vehicle bogie, in particular to a railway vehicle hydraulic self-adjusting bogie. Background technique [0002] With the continuous increase of axle load and operating speed of railway freight cars, the operating conditions of railway freight car bogies are more complicated. The impact force generated by the railway freight car during operation is mainly transmitted to the rail through the bogie. In order to alleviate the impact and reduce the action force between the wheel and rail, it can be used between the bogie axle box and the side frame, and between the side frame and the bolster. Adding rubber springs or cylindrical steel springs can effectively reduce the vertical force of the vehicle and improve the dynamic performance of the bogie by increasing the working deflection of the springs. [0003] In the prior art, the bogie of the automatic height adjustment device includes the following structure: [0004] (1...

AI Technical Summary

Problems solved by technology

[0008] However, the bogie of the existing mechanical structure and the height automatic adjustment device of the hydraulic structure are limited by the height of the coupler. Reduce the action force between the wheel and rail

In addition, due to the difference in height of the coupler between the empty and heavy vehicles, the force on the coupler is uneven, which may easily cause a breakage accident of the coupler, which seriously endangers the driving safety.

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