rail vehicle

Abstract

The invention discloses a track vehicle which comprises a vehicle body, a front bogie, a back bogie, a driving device and a controller, wherein the front bogie is arranged at the lower part of the vehicle body; a left front wheel is arranged on the left side of the front bogie, a right front wheel is arranged on the right side of the front bogie, and the two front wheels can rotate independently; the back bogie is arranged at the lower part of the vehicle body; a left back wheel is arranged on the left side of the back bogie, a right back wheel is arranged on the right side of the back bogie, and the two back wheels can rotate independently; the driving device is connected with the left back wheel and the right back wheel respectively; the controller is connected with the driving device and used for controlling the output rotating speed of the driving device, so as to enable the rotating speed difference between the left back wheel and the right back wheel when the back bogie passes by a certain position to be identical with the rotating speed difference between the left front wheel and the right front wheel when the front bogie passes by the same position. According to the track vehicle provided by the embodiment of the invention, the decoupling to the wheels in the rotation direction is realized, the abrasion loss is reduced, and meanwhile, the identical rotating speed differences between the front wheels and between the back wheels are realized through controlling the output rotating speed of the driving device, so that the curve negotiating performance of the track vehicle is greatly improved.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to a rail vehicle. Background technique [0002] There are many curved lines in urban rail transit such as subways and light rails, among which sharp curved lines with a track radius of several hundred meters or less account for a large proportion. Consolidated wheel-set bogies are generally used in the driving system of traditional railway vehicles, which fundamentally limits the minimum turning radius of the vehicle and seriously affects the curve passing performance of urban rail vehicles. [0003] The independently rotating wheel bogie realizes the decoupling of the left and right wheels. Compared with the traditional consolidated wheel set, it has great application prospects in reducing rail wear and improving curve passing performance. However, due to the lack of the guiding effect of the longitudinal creep moment on the independently rotating wheels, the original automatic...

AI Technical Summary

Problems solved by technology

However, due to the lack of the guiding effect of the longitudinal creep moment on the independently rotating wheels, the original automatic reset and curve guiding functions of the traditional wheel set no longer exist on the independent rotating wheel bogie, and the moment formed by the gravity restoring force that plays a leading role Make the system unstable in the yaw direction, unable to realize the self-guiding function

[0004] However, the structure of the traditional independent rotating wheel is complicated, the control is cumbersome, and the ability to pass through the curve is average, and the rail wears a lot

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