Five-module floating train springs adjustment algorithm

LIU Weiwei, CHEN Jingyu, GAO Mingjie, WANG Yong, JIANG Zhe, LIU Ming

Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (17) : 144-152.

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (17) : 144-152.

Five-module floating train springs adjustment algorithm

  • LIU Weiwei, CHEN Jingyu, GAO Mingjie, WANG Yong, JIANG Zhe, LIU Ming
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Abstract

Adjusting the wheel axle load by adding cushion adjusting spring to meet the deviation requirements is a time-consuming and laborious link in the factory acceptance standard of the train. The determination of spring adjustment position and cushion amount basically depends on the experience of operators, and there is no efficient and accurate algorithm as the theoretical support. In this paper, the train spring adjusting model is established; Then, the specific flow of the algorithm of adding cushion and adjusting spring is given; Simulated annealing algorithm and genetic algorithm are used to optimize the model, and the spring adjustment scheme is given; Finally, the train is padded and spring adjusted, and the test weighing test is carried out. The algorithm indexes decreased from 5.52% to 1.99% and 1.82%, the maximum wheel weight deviation rate decreased from 4.13% to 1.93% and 1.6%, the maximum dynamic axle deviation rate decreased from 3.52% to 1.99% and 1.82%, and the maximum towing axle deviation rate decreased from 1.38% to 0.17% and 0.98%.The results show that the two calculated spring adjustment schemes can level the axle load deviation of the train wheel at one time and meet the specification requirements, eliminating the need for back and forth disassembly and hoisting of the car body and bogie, and the operation efficiency and adjustment accuracy are significantly improved. Using this method, only the corresponding joint stiffness matrix needs to be established, which can be easily popularized and applied to other rail vehicle models, which provides a theoretical support for the cushion spring adjustment of rail vehicles.

Key words

Five module floating car / Axle weight ;Mechanical model / Spring adjusting algorithm

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LIU Weiwei, CHEN Jingyu, GAO Mingjie, WANG Yong, JIANG Zhe, LIU Ming. Five-module floating train springs adjustment algorithm[J]. Journal of Vibration and Shock, 2023, 42(17): 144-152

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