Subway train frame overhaul planning method and system

Abstract

The invention provides a subway train frame overhaul planning method and system, and the method comprises the following steps: collecting train historical operation data and vehicle basic information, the train historical operation data comprising a train historical operation mileage, and the vehicle basic information comprising a train number; calculating a kilometer control difference value of the overhaul train according to the overhaul standard interval kilometer and the number of the trains; adjusting the daily operation mileage of the train according to the overhaul train mileage control difference value and the historical operation mileage of the train; and generating a subway train frame overhaul parameter set according to the train daily operation kilometers, and generating a frame overhaul scheme according to the subway train frame overhaul parameter set. The stable difference value of the train running mileage can be ensured, the daily running plan of the train is reasonably arranged, and the accuracy of subway frame overhaul plan compilation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of subway train maintenance and support, and particularly to a method and system for planning the overhaul of subway trains. Background Art

[0002] The maintenance of subway trains is mainly divided into three levels: overhaul, balanced maintenance, and daily inspection. Among them, the daily inspection and balanced maintenance mainly aim to maintain daily operation; the overhaul is a process of comprehensively inspecting and maintaining subway trains, involving disassembling, inspecting, repairing, and replacing various components of the vehicle to ensure the safe and reliable operation of the train. As a high-level maintenance process, it is a restorative maintenance process to ensure the long-term safe and reliable operation of train equipment.

[0003] Due to the long maintenance cycle of the overhaul process and the long span between each maintenance process (generally, one overhaul process every five years or 625,000 kilometers). To simultaneously meet the daily operation demand of the trains without reduction and ensure that the overhaul maintenance plan of the trains does not deviate, it is necessary to comprehensively arrange the production plan of the trains, that is, combined with the annual overhaul maintenance production capacity, considering the daily running kilometers of the trains, and arranging the running kilometers of the trains on the whole line in an orderly manner. To achieve the above, it is necessary to plan and control both the overhaul plan of rail transit trains and the daily operation plan of the trains.

[0004] The overhaul plan of rail transit trains refers to a schedule for major repairs, updates, or renovations of the rail transit system, usually involving large-scale equipment replacement, line maintenance, vehicle inspection, etc. There is a certain relationship between the overhaul plan of trains and the daily operation plan of trains. First, the overhaul plan of trains is formulated based on the evaluation of the operation status of the rail transit system, equipment kilometers, and time, taking into account the overall needs and long-term development plan of the system. And the daily operation plan of trains decomposes the overhaul plan of trains into specific daily tasks according to the requirements of on-site production to ensure the normal operation of the rail transit system. Therefore, in order to avoid a large number of trains arriving at the maintenance cycle simultaneously, it is necessary to track the daily running mileage of the trains to ensure a stable difference in the running mileage of the trains and make the daily operation plan of the trains more scientific and reasonable. Summary of the Invention

[0005] The purpose of the present invention is to provide a method and system for planning the overhaul of subway trains to solve the above problems, which can ensure a stable difference in the running mileage of trains, reasonably arrange the daily operation plan of trains, and improve the accuracy of compiling the overhaul plan of subways.

[0006] The present invention proposes a method for planning the overhaul of subway trains, including the following steps:

[0007] Step S1: Collect the historical operation data of the train and the basic vehicle information. The historical operation data of the train includes the historical running mileage of the train, and the basic vehicle information includes the number of trains.

[0008] Step S2: Calculate the control difference of the overhaul train kilometers according to the standard interval kilometers of overhaul and the number of trains.

[0009] Step S3: Adjust the daily operation kilometers of the train according to the control difference of the overhaul train kilometers and the historical running mileage of the train.

[0010] Step S4: Generate the overhaul parameter set of the subway train based on the daily operation kilometers of the train, and generate the overhaul plan according to the overhaul parameter set of the subway train.

[0011] In one embodiment, the historical operation data of the train further includes the departure time and arrival time of the train, and the basic vehicle information further includes the train type.

[0012] In one embodiment, the historical operation data of the train is obtained through train operation records, on-vehicle equipment and / or relevant systems.

[0013] In one embodiment, the calculation formula for the control difference Δls of the overhaul train kilometers is:

[0014] where S is the standard interval kilometers of overhaul and L is the number of trains.

[0015] In one embodiment, step S3 specifically includes:

[0016] Calculate the average daily running mileage, the standard deviation of the daily running mileage, and the coefficient of variation of the daily running mileage of each train according to the historical running mileage of the train;

[0017] Use the model to predict the daily kilometer difference of the train;

[0018] Compare the daily kilometer difference of the train with the control difference of the overhaul train kilometers, and adjust the daily operation kilometers of the subsequent trains.

[0019] In one embodiment, step S3 further includes: formulating a daily operation plan for the train according to the daily operation kilometers of the train, and the daily operation plan for the train includes train withholding, morning and evening peak operations, and / or all-day operations.

[0020] In one embodiment, the overhaul parameter set of the subway train includes the number of trains to be overhauled per month.

[0021] In one embodiment, the calculation formula for the number of trains to be overhauled per month Δl is:

[0022] Among them, L is the number of trains, ΔS is the annual average operating kilometers of subway trains, ΔS is obtained based on the historical operating mileage of the trains, and S is the standard interval kilometers for major overhaul.

[0023] The present invention also proposes a subway train major overhaul planning system, which is used to implement the subway train major overhaul planning method as described above, including:

[0024] A vehicle information management module, which manages and / or stores basic vehicle information, and the basic vehicle information includes the number of trains;

[0025] A data reading module, which is connected to the subway train historical database to obtain the historical operation data of the trains, and the historical operation data of the trains includes the historical operating mileage of the trains;

[0026] A data analysis module, which is respectively connected to the vehicle information management module and the data reading module to calculate the control difference of the kilometers of major overhaul trains and the daily operating kilometers of the trains;

[0027] A major overhaul planning module, which is connected to the data analysis module, and generates a subway train major overhaul parameter set and formulates a subway train major overhaul plan according to the output result of the data analysis module.

[0028] In one embodiment, the subway train major overhaul planning system further includes an information display module, which is connected to the major overhaul planning module to display the subway train major overhaul parameters.

[0029] Compared with the prior art, the beneficial effects of the subway train major overhaul planning method and system of the present invention are as follows:

[0030] 1) The present invention can make the daily operation plan of the trains more scientific and reasonable, ensure a stable difference in the operating mileage of the trains, avoid a large number of trains arriving at the maintenance cycle at the same time, thereby improving the accuracy of the subway major overhaul plan compilation, and at the same time ensuring the daily operation vehicle demand of the trains and completing the train major overhaul maintenance plan.

[0031] 2) By reasonably planning the major overhaul plan of the subway trains, the present invention can ensure that the trains are fully maintained and repaired during the maintenance period, improve the safety, reliability and performance of the trains, thereby reducing delays and outages caused by failures, improving the efficiency of subway operation, and at the same time timely discovering and handling potential safety hazards also helps to ensure the safety of passengers' lives, providing guarantee for the long-term operation of subway trains.

[0032] 3) The reasonable overhaul plan obtained by the present invention can effectively extend the service life of subway trains, reduce maintenance costs and the expenses for replacing parts, effectively avoid over-maintenance or under-maintenance, and further save costs. Description of the Drawings

[0033] Figure 1 It is a schematic flow chart of the subway train overhaul planning method according to an embodiment of the present invention;

[0034] Figure 2 It is a schematic flow chart of using a model to predict the daily kilometer difference of a train according to an embodiment of the present invention;

[0035] Figure 3 It is a schematic structural diagram of the subway train overhaul planning system according to an embodiment of the present invention. Detailed Embodiments

[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted here that the specific embodiments described herein are used to help understand the present invention, but do not limit the present invention.

[0037] The present invention proposes a subway train overhaul planning method. Refer to Figure 1 , including the following steps:

[0038] Step S1: Collect and sort out the train historical operation data and vehicle basic information: The train historical operation data includes the departure time, arrival time, historical running mileage of each train, etc., and the vehicle basic information includes the train model, the number of trains, etc.;

[0039] Step S2: Calculate the overhaul train kilometer control difference according to the standard interval kilometers for overhaul and the number of trains;

[0040] Step S3: Adjust the daily operation kilometers of the train according to the overhaul train kilometer control difference and the historical running mileage of the train;

[0041] Step S4: Generate a subway train overhaul parameter set based on the daily operation kilometers of the train, and generate an overhaul plan according to the subway train overhaul parameter set.

[0042] The following elaborates in detail on the subway train overhaul planning method.

[0043] The train historical operation data of an embodiment of the present invention is obtained through train operation records, on-vehicle equipment and / or other relevant systems. The collected data should include the operation conditions of multiple trains over a period of time. Sufficient data is for more comprehensive analysis of the daily train operation plan, etc.

[0044] The calculation formula for the control difference Δls of the overhaul train kilometerage in an embodiment of the present invention is: Among them, S is the standard overhaul interval kilometerage, and L is the number of trains. According to the "Shanghai Urban Rail Transit Facilities and Equipment Maintenance and Renewal Regulations and Guidelines", the overhaul interval of trains is generally once every 625,000 ± 100,000 kilometers for a single train operation, that is, the standard overhaul interval kilometerage S is 62,500. To ensure the smooth implementation of the overhaul tasks of the trains under the jurisdiction of the fleet, there should be no overlap in single overhaul tasks.

[0045] Step S3 in an embodiment of the present invention specifically includes:

[0046] Calculate the average daily running kilometerage, the standard deviation of the daily running kilometerage, and the coefficient of variation of the daily running kilometerage for each train according to the historical running kilometerage of the train;

[0047] Use the model to predict the daily kilometerage difference of the train;

[0048] Compare the daily kilometerage difference of the train with the control difference of the overhaul train kilometerage, and adjust the daily operating kilometerage of the subsequent trains.

[0049] Among them, the average daily running kilometerage of each train can be achieved by dividing the total running kilometerage of each train by the number of days during the observation period. This indicator can help us understand the average daily running situation of the train. The standard deviation of the daily running kilometerage of each train. The standard deviation of the daily running kilometerage is an indicator to measure the degree of data dispersion, which can help us understand the change situation of the daily running kilometerage of the train. If the standard deviation is small, it means that the daily running kilometerage of the train is relatively stable; if the standard deviation is large, it means that the daily running kilometerage of the train fluctuates greatly. By calculating the standard deviation, we can determine the stable difference of the daily running kilometerage of the train. The coefficient of variation of the daily running kilometerage of the train is the ratio of the standard deviation to the average value, which is used to measure the relative degree of variation of the data. By calculating the coefficient of variation, we can more accurately compare the stability of the daily running kilometerage between different trains. A lower coefficient of variation indicates a higher stability of the daily running kilometerage of the train, while a higher coefficient of variation indicates a lower stability of the daily running kilometerage of the train.

[0050] Use the model to predict the daily kilometerage difference of the train, see Figure 2, specifically including: predicting the daily kilometer difference of the train based on historical data and other relevant factors, such as train type, line conditions, passenger flow, etc., which can help us more accurately evaluate the rationality of the train's daily operation plan and provide more targeted suggestions. For example, for those trains with relatively stable daily operating mileage, we can suggest maintaining their current operation plan because they can already complete the scheduled operating mileage within the specified time. However, for those trains with large fluctuations in daily operating mileage, we can suggest adjusting their operation plans. For example, we can set longer running times for these trains according to the fluctuations in their daily operating mileage to ensure that they can complete the operation tasks within the specified time. The model for predicting the daily kilometer difference of the train can be a time series analysis model, such as the autoregressive integrated moving average model (ARIMA) or its variants.

[0051] Step S3 of an embodiment of the present invention further includes: formulating a daily operation plan for the train according to the daily operating kilometers of the train. The daily operation plan for the train includes arranging train detention (out-of-service), arranging morning and evening peak operations, and / or full-day operations, so as to achieve the purpose of dynamically controlling the daily operating kilometers of the train every day.

[0052] The overhaul parameter set of the subway train in an embodiment of the present invention includes the number of trains to be overhauled per month, the types of overhauled trains, the overhaul dates of each car body, maintenance parts, etc.

[0053] The calculation formula for the number of trains Δl to be overhauled per month is:

[0054] The specific derivation process is as follows:

[0055] The cycle T required to complete one overhaul task:

[0056] The number of trains ΔL to be overhauled per year:

[0057] The number of trains Δl to be overhauled per month:

[0058] Among them, L is the number of trains, ΔS is the annual average operating kilometers of the subway train, ΔS can be obtained according to the historical operating mileage of the train, and S is the standard overhaul interval kilometers.

[0059] Briefly, the overhaul planning method for subway trains of the present invention analyzes the running mileage of all trains on a yearly, monthly, and daily basis to ensure a stable difference in the running mileage of each train on the entire line. By relying on the adjustment of the daily train usage plan, such as arranging train detentions and arranging peak-hour operations, and at the same time analyzing the daily operating kilometers of each operating train number in the line operation diagram, the optimal solution for the next-day train usage plan is given. By continuously controlling the daily train usage plan and controlling the kilometer difference of all trains, the purpose of reasonably planning the overhaul plan of the train fleet is achieved.

[0060] It should be noted that the overhaul planning method for subway trains of the present invention only considers the arrangement of the overhaul plan and does not consider factors such as the overhaul maintenance cycle and the organization of the operation diagram for the time being.

[0061] The present invention also proposes an overhaul planning system for subway trains, which is used to implement the overhaul planning method for subway trains as described above. Refer to Figure 3 , and includes a vehicle information management module, a data reading module, a data analysis module, an overhaul planning module, and an information display module.

[0062] The vehicle information management module is used to manage and / or store the basic vehicle information, and the basic vehicle information includes the number of trains, etc. The data reading module is connected to the historical database of subway trains and is used to obtain the historical operation data of the trains. The historical operation data of the trains includes the historical running mileage of the trains, etc. The data analysis module is respectively connected to the vehicle information management module and the data reading module to calculate the control difference of the overhaul train kilometers and the daily operating kilometers of the trains. The overhaul planning module is connected to the data analysis module and generates an overhaul parameter set for subway trains and formulates an overhaul plan for subway trains according to the output results of the data analysis module. The overhaul plan for subway trains includes the daily operation information of the trains, the number of trains to be overhauled per month and the corresponding overhaul train models, etc. The information display module is connected to the overhaul planning module and is used to display the overhaul parameters of subway trains and the operation strategy information of subway trains, etc.

[0063] It should be noted that in this application, unless otherwise clearly specified and defined, similar terms such as "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can also be the communication inside two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific situation. "An embodiment" or "a kind of embodiment" in this application refers to specific features, structures or characteristics that can be included in at least one implementation manner of the present invention. The "in one embodiment" and "a kind of embodiment" that appear in different places in this specification do not all refer to the same embodiment, nor are they separate or selectively exclusive embodiments from other embodiments. The terms "including" and "comprising" indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in this application includes any and all combinations of one or more of the related listed items.

[0064] The present invention has the following beneficial effects:

[0065] 1) The present invention can make the daily operation plan of the train more scientific and reasonable, ensure the stable difference in the train operation mileage, avoid a large number of trains arriving at the overhaul cycle at the same time, thereby improving the accuracy of the subway overhaul plan compilation, and at the same time ensuring to meet the daily operation vehicle demand of the train and complete the train overhaul and repair plan.

[0066] 2) By reasonably planning the overhaul plan of the subway train, the present invention can ensure that the train is fully maintained and repaired during the maintenance period, improve the safety, reliability and performance of the train, thereby reducing the delays and outages caused by failures, improving the efficiency of subway operation, and at the same time timely discovering and handling potential safety hazards also helps to ensure the safety of passengers' lives, providing guarantee for the long-term operation of the subway train.

[0067] 3) The reasonable overhaul plan obtained by the present invention can effectively extend the life of the subway train, reduce the maintenance cost and the cost of replacing parts, effectively avoid the situation of over-maintenance or under-maintenance, and further save costs.

[0068] The above embodiments are only further descriptions of the present invention, not other forms of restrictions on the present invention. The present invention can also have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding modifications and changes according to the present invention, but these corresponding modifications and changes should all fall within the protection scope of the present invention.

Claims

1. A major overhaul planning method for subway trains, characterized in that, It includes the following steps: Step S1: Collect the historical operation data of the train and the basic vehicle information. The historical operation data of the train includes the historical running mileage of the train, and the basic vehicle information includes the number of trains; Step S2: Calculate the control difference of the overhaul train kilometers according to the standard interval kilometers of overhaul and the number of trains; Step S3: Adjust the daily operation kilometers of the train according to the control difference of the overhaul train kilometers and the historical running mileage of the train; Step S4: Generate the overhaul parameter set of the subway train based on the daily operation kilometers of the train, and generate the overhaul plan according to the overhaul parameter set of the subway train.

2. The overhaul planning method for the frame of a subway train according to claim 1, wherein The historical operation data of the train further includes the departure time and arrival time of the train, and the basic vehicle information further includes the train type.

3. The overhaul planning method for subway train frames according to claim 1, wherein The historical operation data of the train is obtained through train operation records, on-vehicle equipment, and / or relevant systems.

4. The overhaul planning method for subway train frames according to claim 1, characterized in that, The calculation formula for the control difference Δls of the overhaul train kilometers of the said rack is: Wherein, S is the standard interval kilometers of overhaul, and L is the number of trains.

5. The overhaul planning method for the frame of a subway train according to claim 1, characterized in that, The specific content of Step S3 includes: Calculate the average daily running mileage, the standard deviation of the daily running mileage, and the coefficient of variation of the daily running mileage of each train according to the historical running mileage of the train; Use the model to predict the difference in the kilometers of the train on the current day; Compare the difference in the kilometers of the train on the current day and the control difference of the overhaul train kilometers, and adjust the daily operation kilometers of the subsequent trains.

6. The overhaul planning method for subway train car body according to claim 5, wherein Step S3 further includes: formulating the daily operation plan of the train according to the daily operation kilometers of the train, and the daily operation plan of the train includes train detention, morning and evening peak operations, and / or all-day operations.

7. The overhaul planning method for the frame of a subway train according to claim 1, characterized in that The overhaul parameter set of the subway train includes the number of trains that need to complete the overhaul per month.

8. The overhaul planning method for subway train car body according to claim 7, characterized in that The calculation formula for the number of trains Δl that need to be overhauled monthly is as follows: Wherein, L is the number of trains, ΔS is the average annual running kilometers of the subway train, ΔS is obtained according to the historical running mileage of the train, and S is the standard interval kilometers of overhaul.

9. A major overhaul planning system for subway trains, characterized in that, The system is used to implement the subway train overhaul planning method described in any one of claims 1-8, and includes: A vehicle information management module for managing and / or storing the basic vehicle information, and the basic vehicle information includes the number of trains; A data reading module, connected to the historical database of the subway train, to obtain the historical operation data of the train, and the historical operation data of the train includes the historical running mileage of the train; A data analysis module, respectively connected to the vehicle information management module and the data reading module, to calculate the control difference of the overhaul train kilometers and the daily operation kilometers of the train; An overhaul planning module, connected to the data analysis module, to generate the overhaul parameter set of the subway train and formulate the overhaul plan of the subway train according to the output result of the data analysis module.

10. The overhaul planning system for subway train frames according to claim 9, wherein, It further includes an information display module, connected to the overhaul planning module, to display the overhaul parameters of the subway train.

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