Rail transit vehicle-line coupling operation and maintenance method and system

Abstract

The application discloses a rail transit vehicle-line coupling operation and maintenance method and system, which comprises the following steps: judging whether the stability index, comfort index and frame stability data of the rail vehicle are normal in real time; if any data is abnormal, acquiring wheel pair geometric size data and track line irregularity detection data of the rail vehicle, performing vehicle-line coupling analysis and realizing abnormal positioning; wherein the vehicle-line coupling analysis is specifically as follows: calculating the equivalent taper of the same wheel pair when passing through different road sections of the track line, if the equivalent taper is abnormal in different road sections, it indicates that the wheel pair is abnormal; calculating the equivalent taper of different wheel pairs when passing through the same road section, if the equivalent tapers are all abnormal, it indicates that the road section is abnormal. The application can accurately position abnormal problems, timely correct the problems, provide data support for rail transit system operation and maintenance, and ensure the safe and efficient operation of rail transit vehicles.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle operation and maintenance technology, and in particular to a rail transit vehicle-line coupled operation and maintenance method and system. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] With the development of the rail transit industry, the number of rail vehicles put into operation is increasing year by year. As rail vehicles develop towards intelligence, in order to ensure the safe operation of rail vehicles, it is usually necessary to conduct real-time inspection and maintenance of rail vehicles and track infrastructure to ensure the safe and efficient operation of rail transit vehicles.

[0004] Urban rail transit vehicles and rail infrastructure are interdependent and mutually influential. Defects in rail infrastructure and foreign objects encroaching on the operating line can affect driving safety. Long-term repeated vibrations caused by vehicle operation can also cause structural deformation of the rail line, uneven settlement of the line foundation, and water leakage in tunnels, which may even affect the structural safety of the line and foundation.

[0005] However, current safety inspections of rail transit vehicles and track infrastructure often involve conducting separate inspections of each item on the vehicle or track, followed by independent analysis and judgment of the detected data. This approach fails to consider the impact of the interaction between the wheelsets and the track during vehicle operation, often leading to the following technical problems: When abnormal vehicle vibrations are detected, most of the effort is often spent on the independent analysis and early warning of vehicle and track detection data. This is not only time-consuming, but also often fails to detect abnormalities accurately and promptly. For example, sometimes all individual data are normal, but abnormal vehicle vibrations or abnormal vehicle indicators (such as smoothness, comfort, and structural stability) occur when the vehicle wheelset and track are coupled. Therefore, existing technologies cannot accurately and quickly locate abnormalities, nor can they quickly determine whether the root cause of abnormal vehicle vibrations is a track problem or a wheelset problem. Summary of the Invention

[0006] To address the aforementioned issues, this invention proposes a vehicle-track coupled operation and maintenance method and system for rail transit. By considering the interaction and influence between rail vehicles and rail lines, the detection data of both are coupled and analyzed to accurately locate abnormal problems, thereby greatly improving the efficiency of problem handling.

[0007] According to a first aspect of the present invention, a rail transit vehicle-line coupled operation and maintenance method is provided, comprising: The system can determine in real time whether the stability index, comfort index, and structural stability data of the rail vehicle are normal; if any data is abnormal, it can acquire the wheel set geometry data and track irregularity detection data of the rail vehicle, perform vehicle-track coupling analysis, and realize anomaly location. Specifically, the vehicle-track coupling analysis is performed as follows: Calculate the equivalent taper of the same wheelset when passing through different sections of the track. If the equivalent taper is abnormal in different sections, it indicates that the wheelset is abnormal. Calculate the equivalent taper when different wheelsets pass through the same road segment. If the equivalent taper is abnormal, it indicates that there is an anomaly in the road segment.

[0008] This also includes: developing repair strategies based on anomaly location results. If the wheelset is determined to be abnormal, a targeted wheel and rail turning repair strategy will be developed based on the wheelset geometry data. If the track is determined to be abnormal, the track will be polished based on the track irregularity data and track profile data.

[0009] According to a second aspect of the present invention, a rail transit vehicle-line coupled operation and maintenance system is provided, comprising: The indicator judgment module is used to judge in real time whether the stability index, comfort index and structural stability data of the rail vehicle are normal. The coupling analysis module is used to acquire the wheelset geometry data of the rail vehicle and the track irregularity detection data when any data is abnormal, and to perform vehicle-track coupling analysis to achieve anomaly localization. Specifically, the vehicle-track coupling analysis is performed as follows: Calculate the equivalent taper of the same wheelset when passing through different sections of the track. If the equivalent taper is abnormal in different sections, it indicates that the wheelset is abnormal. Calculate the equivalent taper when different wheelsets pass through the same road segment. If the equivalent taper is abnormal, it indicates that there is an anomaly in the road segment.

[0010] Also includes: The operation and maintenance strategy module is used to formulate repair strategies based on anomaly location results. If the wheelset is determined to be abnormal, a targeted wheel and rail turning repair strategy will be developed based on the wheelset geometry data. If the track is determined to be abnormal, the track will be polished based on the track irregularity data and track profile data.

[0011] The detection module includes: Track irregularity detection unit, used to detect track irregularity data; Wheelset geometry detection unit, used to detect wheelset geometry; The vehicle dynamics monitoring unit is used to acquire vibration acceleration data of rail vehicles and frame vibration acceleration data, calculate the stability index, comfort index and frame stability data of rail vehicles, and determine whether there are any abnormalities in the data.

[0012] According to a third aspect of the present invention, a terminal device is provided, comprising a processor and a memory, wherein the processor is used to implement instructions; and the memory is used to store multiple instructions adapted to be loaded by the processor and executed by the processor to perform the above-described rail transit vehicle-line coupled operation and maintenance method.

[0013] According to a fourth aspect of the present invention, a computer-readable storage medium is provided, wherein a plurality of instructions are stored, the instructions being adapted to be loaded by a processor of a terminal device and executed by the above-described rail transit vehicle-line coupled operation and maintenance method.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) This invention can quickly and accurately locate abnormal problems in the operation of vehicles by vehicle-track coupling analysis, without relying on separate detection data of vehicles or tracks. This solves the problem that the judgment results are inaccurate and the location of abnormalities cannot be accurately located in the prior art by relying on separate detection data of vehicles or tracks. At the same time, it avoids a lot of data calculation and analysis, and improves the accuracy and efficiency of abnormality location. It can detect and correct problems in a timely manner, provide data support for the operation and maintenance of rail transit systems, and ensure the safe and efficient operation of rail transit vehicles.

[0015] (2) After locating the abnormal position, the present invention can formulate a refined construction plan for wheel turning and rail grinding based on the obtained wheelset geometric dimension data and vehicle unevenness data, so as to realize the economical operation and maintenance of urban rail transit system, avoid unnecessary waste caused by traditional planned maintenance, and reduce operation and maintenance costs.

[0016] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the rail transit vehicle-line coupled operation and maintenance method in an embodiment of the present invention; Figure 2 This is a schematic diagram of the rail transit vehicle-line coupled operation and maintenance system in an embodiment of the present invention. Detailed Implementation

[0018] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0020] Example 1 In one or more embodiments, a rail transit vehicle-line coupled operation and maintenance method is disclosed, combining... Figure 1 Specifically, it includes the following processes: (1) Real-time assessment of whether the stability index, comfort index and structural stability data of the rail vehicle are normal; In this embodiment, the vehicle's stability and comfort indices are obtained based on the vibration acceleration data of the rail vehicle, and the frame stability data is obtained based on the frame vibration acceleration data of the rail vehicle. Therefore, this embodiment requires obtaining the vibration acceleration data of the rail vehicle and the frame vibration acceleration data. The specific methods for obtaining these two types of data are well-established in the field, for example: During vehicle operation, vehicle vibration acceleration data is obtained through acceleration sensors installed on the vehicle body. Then, the vehicle's smoothness and comfort indicators are obtained from the vehicle vibration acceleration data. The frame vibration data is the bogie vibration data, which is obtained through vibration acceleration sensors installed on the bogie. The frame stability can be analyzed from the frame vibration data, which is also achievable with existing technology.

[0021] As a specific implementation method, this embodiment sets up a vehicle dynamics monitoring unit. Acceleration sensors are deployed at designated locations on the car body and bogie of the rail vehicle to detect the vibration acceleration data of the rail vehicle and the vibration acceleration data of the bogie in real time. The detected data is transmitted to the vehicle dynamics monitoring unit, which calculates the smoothness and comfort index of the vehicle operation, as well as the stability data of the bogie, based on these data.

[0022] This embodiment defines normal data ranges for stability indicators, comfort indicators, and structural stability data. When an indicator or data value exceeds its corresponding normal range, the indicator or data is determined to be abnormal (abnormal).

[0023] (2) If any data is abnormal, obtain the wheel set geometry data of the rail vehicle and the track irregularity detection data, perform vehicle-track coupling analysis, and realize anomaly location; Specifically, when any of the stability index, comfort index, or structural stability data is detected to be abnormal, the wheel set geometry data of the rail vehicle and the track irregularity detection data are obtained.

[0024] In this embodiment, the specific detection methods for the wheelset geometry data and track irregularity data of the rail vehicle are also those already implemented in the prior art. As a specific example: the wheelset geometry data can be obtained by high-speed 2D digital laser sensors deployed on both the inner and outer sides of the track; the laser sensor deployed on the outer side of the track mainly measures the outer profile of the wheel tread, while the laser sensor deployed on the inner side of the track mainly measures the inner profile of the wheel flange. Track irregularity data is obtained by high-speed digital laser sensors installed on the bottom of the rail vehicle. Through high-speed integrated circuit processing, the digital profile and planar coordinates of the measured track can be directly output.

[0025] Of course, wheelset geometry data and track irregularity data can also be detected using some existing portable inspection equipment. These are existing technologies and will not be discussed in detail.

[0026] In this embodiment, vehicle-track coupling analysis is performed, specifically as follows: Calculate the equivalent taper of the same wheelset when passing through different sections of the track. If the equivalent taper is abnormal in all cases, it indicates that there is an abnormality in the wheelset. Calculate the equivalent taper when different wheelsets pass through the same road segment. If the equivalent taper is abnormal, it indicates that there is an anomaly in the road segment.

[0027] The calculation of equivalent taper is also a relatively mature technology in the existing technology. For example, the equivalent taper can be calculated by using wheelset tread profile and track profile data. Based on the acquired wheelset geometric dimension data and track irregularity detection data, the equivalent taper under different conditions can be calculated. When the equivalent taper exceeds a certain set threshold range, the equivalent taper is judged to be abnormal.

[0028] The vehicle-line coupling analysis method in this embodiment can quickly and accurately locate specific anomalies, saving a lot of data analysis and calculation.

[0029] (3) Based on the anomaly location results, formulate a turning strategy: Specifically, after identifying the problem, if it is a wheelset abnormality, a wheel-rail turning strategy can be developed for the abnormal wheelset. The wheel-rail turning strategy can be accurately developed based on the wheelset data to avoid unnecessary turning waste caused by planned turning and to extend the service life of the wheelset. If it is a track abnormality, the rails of the abnormal track can be ground. The rails can be accurately ground based on the track irregularity data and track profile parameters to avoid excessive grinding of the rails and abnormal wear of the vehicle wheelsets caused by track irregularities.

[0030] Example 2 In one or more embodiments, a rail transit vehicle-line coupled operation and maintenance system is disclosed, combining... Figure 2 Specifically, it includes: The indicator judgment module is used to judge in real time whether the stability index, comfort index and structural stability data of the rail vehicle are normal. The coupling analysis module is used to acquire the wheelset geometry data of the rail vehicle and the track irregularity detection data when any data is abnormal, and to perform vehicle-track coupling analysis to achieve anomaly localization. Specifically, the vehicle-track coupling analysis is performed as follows: Calculate the equivalent taper of the same wheelset when passing through different sections of the track. If the equivalent taper is abnormal in different sections, it indicates that the wheelset is abnormal. Calculate the equivalent taper when different wheelsets pass through the same road segment. If the equivalent taper is abnormal, it indicates that there is an anomaly in the road segment.

[0031] The operation and maintenance strategy module is used to formulate repair strategies based on anomaly location results. If the wheelset is determined to be abnormal, a targeted wheel and rail turning repair strategy will be developed based on the wheelset geometry data. If the track is determined to be abnormal, the track will be polished based on the track irregularity data and track profile data.

[0032] The detection module specifically includes: Track irregularity detection unit, used to detect track irregularity data; Wheelset geometry detection unit, used to detect wheelset geometry; The vehicle dynamics monitoring unit is used to detect the vibration acceleration data of the rail vehicle and the vibration acceleration data of the frame, calculate the stability index, comfort index and frame stability data of the rail vehicle, and determine whether there are any abnormalities in the data.

[0033] The specific implementation methods of the above modules are the same as those in Example 1, and will not be described in detail again.

[0034] Example 3 In one or more embodiments, a terminal device is disclosed, including a server. The server includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the rail transit vehicle-line coupled operation and maintenance method of Embodiment 1. For simplicity, further details are omitted here.

[0035] It should be understood that in this embodiment, the processor can be a central processing unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc.

[0036] Memory may include read-only memory and random access memory, and provides instructions and data to the processor. A portion of memory may also include non-volatile random access memory. For example, memory may also store information about the device type.

[0037] In the implementation process, each step of the above method can be completed by the integrated logic circuits in the processor hardware or by software instructions.

[0038] Example 4 In one or more embodiments, a computer-readable storage medium is disclosed, wherein a plurality of instructions are stored, the instructions being adapted to be loaded by a processor of a terminal device and executed as described in Embodiment 1 of the rail transit vehicle-line coupled operation and maintenance method.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A vehicle-line coupled operation and maintenance method for rail transit, characterized in that, include: Real-time assessment of the stability, comfort, and structural stability data of rail vehicles to determine if they are normal; If any data is abnormal, acquire the wheelset geometry data of the rail vehicle and the track irregularity detection data. Based on the acquired wheelset geometry data and track irregularity detection data, calculate the equivalent taper under different conditions, perform vehicle-track coupling analysis, and realize anomaly location. Specifically, the vehicle-track coupling analysis is performed as follows: Calculate the equivalent taper of the same wheelset when passing through different sections of the track. If the equivalent taper is abnormal in different sections, it indicates that the wheelset is abnormal. Calculate the equivalent cone when different wheelsets pass through the same road segment. If the equivalent cone is abnormal, it indicates that there is an anomaly in the road segment. Obtain vibration acceleration data of rail vehicles and structural frame; obtain vehicle stability and comfort indices based on rail vehicle vibration acceleration data; and obtain structural stability data based on structural vibration acceleration data.

2. The rail transit vehicle-line coupled operation and maintenance method as described in claim 1, characterized in that, The wheelset geometry data is obtained by laser sensors deployed on both the inner and outer sides of the track, or by a portable detection device.

3. The rail transit vehicle-line coupled operation and maintenance method as described in claim 1, characterized in that, The track irregularity detection data are obtained by laser sensors installed on the track vehicle, or by portable detection devices.

4. The rail transit vehicle-line coupled operation and maintenance method as described in claim 1, characterized in that, This also includes developing repair strategies based on anomaly location results: If the wheelset is determined to be abnormal, a targeted wheel and rail turning repair strategy will be developed based on the wheelset geometry data. If the track is determined to be abnormal, the track will be polished based on the track irregularity data and track profile data.

5. A rail transit vehicle-line coupled operation and maintenance system, characterized in that, include: The indicator judgment module is used to judge in real time whether the stability index, comfort index and structural stability data of the rail vehicle are normal. The coupling analysis module is used to acquire the wheelset geometry data of the rail vehicle and the track irregularity detection data when any data is abnormal. Based on the acquired wheelset geometry data and track irregularity detection data, it calculates the equivalent taper under different conditions, performs vehicle-track coupling analysis, and realizes anomaly localization. Specifically, the vehicle-track coupling analysis is performed as follows: Calculate the equivalent taper of the same wheelset when passing through different sections of the track. If the equivalent taper is abnormal in different sections, it indicates that the wheelset is abnormal. Calculate the equivalent cone when different wheelsets pass through the same road segment. If the equivalent cone is abnormal, it indicates that there is an anomaly in the road segment. Obtain vibration acceleration data of rail vehicles and structural frame; obtain vehicle stability and comfort indices based on rail vehicle vibration acceleration data; and obtain structural stability data based on structural vibration acceleration data.

6. A rail transit vehicle-line coupled operation and maintenance system as described in claim 5, characterized in that, Also includes: The operation and maintenance strategy module is used to formulate repair strategies based on anomaly location results. If the wheelset is determined to be abnormal, a targeted wheel and rail turning repair strategy will be developed based on the wheelset geometry data. If the track is determined to be abnormal, the track will be polished based on the track irregularity data and track profile data.

7. A rail transit vehicle-line coupled operation and maintenance system as described in claim 5, characterized in that, It also includes a detection module, which includes: Track irregularity detection unit, used to detect track irregularity data; Wheelset geometry detection unit, used to detect wheelset geometry; The vehicle dynamics monitoring unit is used to acquire vibration acceleration data of rail vehicles and frame vibration acceleration data, calculate the stability index, comfort index and frame stability data of rail vehicles, and determine whether there are any abnormalities in the data.

8. A terminal device comprising a processor and a memory, the processor for implementing instructions; the memory for storing multiple instructions, characterized in that, The instructions are adapted to be loaded by a processor and executed as described in any one of claims 1-4, representing the rail transit vehicle-line coupled operation and maintenance method.

9. A computer-readable storage medium storing a plurality of instructions, characterized in that, The instructions are adapted to be loaded and executed by the processor of the terminal device according to any one of claims 1-4, which describes the rail transit vehicle-line coupled operation and maintenance method.

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