| EMUs are high-tech intensive products.The reliability and maintainability of EMUs must be researched using system engineering theory,emphasizing information feedback in design,manufacturing,operation and maintenance,and establishing unified EMU technical standards to guide my country’s EMUs The use of maintenance work.Compared with developed countries such as Japan,Germany and France,the development of high-speed railways in my country started late.Especially in the maintenance of EMUs,there is a lack of technical reserves and less operation and maintenance experience data that can be referred to.At present,there is no mature and unified maintenance standard.And use the maintenance system.In view of the current situation of China’s EMUs in terms of operation management and maintenance organization,the standards are not uniform,the types of models are more,the operation efficiency is low,the maintenance and backup rate is high,the maintenance capacity of the EMUs is tight,the maintenance resources are insufficient,and the maintenance and repairs are out of repair.Problems such as outstanding phenomena,this article focuses on the short-term and long-term EMU operation management and maintenance organization scale planning layout and process design in the railway hub as the starting point.From the perspective of planners and designers,combined with existing EMU equipment design related standards,specifications and experience According to the data,with reference to the analysis of mature foreign operation and maintenance management experience and advanced maintenance organization technology,the main reference indicators are the railway train operation diagram,the full train turnaround time and the daily train kilometer parameters.The focus is on the scale and distribution of EMUs in the hub.Undertake the overhaul workload of the EMU depot(station)and the measurement method of the overhaul facility scale.At the same time,it analyzes and studies the spatial layout,plane layout and overhaul process design of the EMU transportation base,mainly considering the layout of the high-level EMU repair workshop and the assembly line of the operation process.,Propose the layout and design plan of supporting facilities and equipment suitable for various repair schedules of domestic EMUs(stations).According to the planning and construction needs of the railway hub,referring to the technical platform supported by the 160km/h power centralized EMU and the current status of the domestic existing operation and maintenance resources,explore and propose a land layout method and process design scheme suitable for the power centralized EMU.Based on this,combined with the Nanjing Hub Railway Transportation Organization Mode,Operation Management Mode,Passenger and Freight Layout Mode and Main Problems in the Hub,combined with the Ninghuai Intercity Railway,the Yangtze River High-speed Railway and the adjacent high-speed passenger transport corridors,planning and designing the Nanjing Hub in the near future And the long-term passenger train operation plan,according to the demand trend of the whole road EMU production and the current status of the Nanjing hub EMU operation and maintenance facilities,comprehensively analyze the necessity of the construction of the Nanjing North EMU operation station,and give the overall layout and technology of the Nanjing North EMU Design.Research indicates:(1)Relying on the Nanjing North EMU project of the newly built Nanjing hub,research and calculations show that the theoretical calculation based on the calculation method of the train diagram is the most scientific and accurate.When the daily train-kilometer method is used for calculation,the average daily shape-kilometer index of the EMU in the hub When the common empirical calculation value is 2000 km,the number of EMUs used and the number of spare EMUs calculated by the daily vehicle kilometer measurement algorithm without considering the number of EMUs for maintenance is about 41% lower than the calculation result of the full turnaround time measurement algorithm,which is associated with the number of EMUs.The calculation result is about 20%,and the calculation result of the number of EMU storage lanes and the number of inspection warehouse lines is about 35%.Calculate the EMU allocation in the hub,undertake the EMU maintenance workload of the EMU depot(station),and the measurement margin of the maintenance facility scale.More sufficient.(2)When the daily train-kilometer measurement algorithm is used,the design of the EMU assignment in the newly-built high-speed railway hub and the calculation of the EMU maintenance workload and the scale of the maintenance facilities need to be combined with the main railway technical standards,passenger flow and The driving plan and other reasonable adjustments have been made to the average daily shape-kilometer index of the EMUs in the hub.This calculation method is more convenient for analysis and calculation,and is suitable for long-term railway hub planning investment and EMU vehicle production scale control.When the full turnaround time measurement algorithm is adopted,it is more scientific to design and undertake the EMU maintenance workload and the scale of the maintenance facilities in the newly-built high-speed railway hub in the new high-speed railway hub,which can effectively improve the utilization rate and operation efficiency of the EMU,and at the same time In terms of operation and maintenance,it can effectively reduce the waste of maintenance resources and reduce investment.(3)The layout and design scale of the EMU’s routing line between the storage yard and the inspection warehouse in the EMU depot(station)can be assigned to the number of first-level maintenance and repair columns of the EMU,and the EMU can be routed according to the maximum time occupied by the routing line.Direct calculation of the line,or through empirical data,directly compare and select the shape line of the current domestic inspection and repair warehouse with a certain line number scale through the ability matching.(4)According to the 160km/h power centralized EMU technology platform and the current status of existing domestic operation and maintenance resources,the technical feasibility of using existing service depots or EMU depots(stations)to transform and implement the 160 km power centralized EMU maintenance and repair plan is insufficient.The construction economy is poor.It is recommended to use the existing depot technical maintenance station to implement maintenance inspection and modification.The technical plan is feasible in principle and the construction economy is reasonable,or the newly built plan power centralized EMU to transport the land.(5)The location of Nanjing North EMUs in the Nanjing hub,the assignment of EMUs in the near and long-term,the scale and layout of operation and maintenance facilities,and the design of overhaul technology need to be considered in a comprehensive manner,considering the current status of the hub,transportation organization mode,operation management mode,and passenger and freight layout in the hub Method and planning layout of the short-and long-term passenger train operation plan in the hub,research and calculation,comprehensive analysis of the main reference indicators of the train operation diagram,full turnaround time and daily train kilometer method,carry out the overall layout of the EMU and the design of the process plan. |
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