关键词: 列车转向架, 机会策略, 预防性维修, 最大最小蚁群算法

Abstract: To solve over or less repair for preventive maintenance of train bogie key components,an optimal decision model for preventive maintenance of train bogie key components was proposed.Based on the different maintenance mode and the minimum repair form,the model used the key component failure cycle as the optimization variable to determine the opportunity for maintaining the expected probability.On the basis of opportunity maintenance idea,the maximum and minimum ant colony iterative algorithm was used to determine the optimal maintenance cycle and opportunistic maintenance threshold of key components.With the minimum average cost rate as the optimization target,the maintenance of fixed maintenance costs was reduced ultimately.By taking the key parts maintenance of train bogie of a subway company as an example,the model could effectively reduce the operation and maintenance costs of bogie's key components,reduce the number of train parking in the depot and improve the train operation efficiency,which could provide theoretical and practical reference for the maintenance decision of rail transit equipment.

Key words: train bogie, opportunistic strategies, preventive maintenance, maximum and minimum ant colony algorithm