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使用列车空气制动仿真方法获得空气制动系统特性,通过列车动力学仿真方法分析了3万t列车在多机车不同步条件下紧急制动和常用制动时车钩力,提出了大秦线3万t重载组合列车的可行性编组。分析了从控机车在各种滞后时间情况下,列车常用和紧急制动的最大车钩力的变化特点。研究结果表明:平道常用全制动工况下,从控二机车滞后时间比从控一机车滞后时间对车钩力影响更大,从控机车滞后于主控机车5 s时,最大车钩力增加了80.2%;平道紧急制动工况下,从控一机车滞后时间对车钩力影响更大,从控机车滞后于主控机车5 s时,最大车钩力增加了335.9%;从控机车滞后时间控制在4.1 s以内,车钩力可以控制在许用范围内。
The characteristics of air braking system are obtained by using train air braking simulation method. The train hook force of 30,000 t train under emergency braking and common braking under multi-locomotive unsynchronized condition is analyzed by train dynamics simulation method. t Heavy Haul Combined Train Feasibility Grouping. The change characteristics of the maximal hook force of the common and emergency brake of the train driven by the slave locomotive under various lag time are analyzed. The results show that under the condition of full braking, the lag time of slave two locomotives has a greater influence on the hooking force than that of slave locomotive lag time. When the slave locomotive lags behind the master locomotive for 5 s, the maximum lathe force increases 80.2%. Under the emergency braking condition of Pingdao, the lag time of slave locomotive has a greater impact on the hooking force. When the slave locomotive lags behind the master locomotive for 5 s, the maximum hook load force increases by 335.9%. The slave locomotive lag time control Within 4.1 s, the hook force can be controlled within the allowable range.