Heavy haul train cycle braking method and system based on double air braking pipes

Abstract

The invention discloses a heavy haul train cycle braking method and system based on double air braking pipes. The heavy haul train cycle braking method comprises the steps that, S1, the working condition of a train is monitored in real time, and route data and train operation data are acquired; S2, whether the condition of triggering air braking is met or not is judged according to the train operation data, and a braking strategy is made according to downhill slope way information of a route ahead; S3, cycle air braking under the double air braking pipes is carried out according to the selected braking strategy, the double air pipes brake in an alternate cycle mode, and the applying amount of power braking is adjusted in real time according to a route downhill slop way; S4, whether a trainspeed meets a mitigation condition or not is judged, if yes, mitigation speed increase is carried out, and when the train speed is mitigated to a limit speed, an appropriate braking strategy is selected again, and the air braking is carried out to reduce the train speed. According to the heavy haul train cycle braking method and system based on the double air braking pipes, the problem of the cycle braking of a heavy haul train on a long and large downhill slope is aimed, the double air pipes braking in the alternate cycle mode is adopted to reduce the train speed fluctuation, the average speed of the train on the long and large downhill slope is improved, the largest coupler force is lowered, and the train operation safety is secured.

Description

technical field [0001] The invention relates to the field of optimal control of heavy-duty trains. More specifically, it relates to a heavy-duty train cycle braking method and system based on dual air brake tubes. Background technique [0002] In recent years, freight trains have developed rapidly, and are constantly developing towards high speed and heavy load. The tonnage and length of heavy load freight trains also show an increasing trend. 10,000-ton heavy-duty trains, and move towards 30,000-ton trains. The continuous increase of the total traction weight of the train will increase the longitudinal impulse between the car bodies, which will easily cause serious problems such as component wear, coupler breakage, and train derailment. Especially in the long downhill section, the safe operation of the train is particularly important. [0003] At present, 60% of Daqin railway lines are mountain railways, accompanied by multiple long downhill slopes, the maximum slope valu...

AI Technical Summary

Problems solved by technology

However, since there are also small slope sections in the long downhill road section, the slopes encountered in each cycle braking process are different. If the simple introduction of double brake air pipes does not consider the slope factor, then the The practical application of the method is relatively limited

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