Subway vehicle pantograph carbon slide plate abrasion estimation method and service life prediction method

A pantograph carbon skateboard and carbon skateboard technology, which is applied in computing, electrical digital data processing, special data processing applications, etc., can solve problems such as the inability to accurately judge the wear and tear of pantograph carbon skateboards, and reduce time and improve safety. Effect

Active Publication Date: 2019-05-21
BEIJING JIAOTONG UNIV +1
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Problems solved by technology

[0005] In order to improve the safety and stability of the operation of subway vehicles and overcome the problem that the wear of the carbon slide plate of the pantograph of the subway vehicle cannot be accurately judged in the prior art, the invention provides a method for estimating the wear of the carbon slide plate of the pantograph of the subway vehicle And the life prediction method, combined with the la

Method used

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  • Subway vehicle pantograph carbon slide plate abrasion estimation method and service life prediction method
  • Subway vehicle pantograph carbon slide plate abrasion estimation method and service life prediction method
  • Subway vehicle pantograph carbon slide plate abrasion estimation method and service life prediction method

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no. 1 example

[0060] This embodiment provides a method for estimating the wear of a subway vehicle pantograph carbon slide plate, figure 1 Shown is the flow chart of the method for estimating the wear of the carbon slide. Such as figure 1 As shown, the method includes the following steps:

[0061] Step S1, establishing a simplified model for calculating the wear rate of the carbon sliding plate of the pantograph.

[0062] The carbon sliding plate of the pantograph in this embodiment is the metal-impregnated carbon sliding plate of the pantograph used in the prior art. Compared with the copper-silver alloy contact wire, the metal carbon slide plate impregnated with the pantograph of subway vehicles has lower hardness and lower melting point, and its wear characteristics are similar to those of brittle materials. Therefore, according to the theoretical basis of wear research by Ashby et al. Mainly wear and tear. The wear rate refers to the degree of wear of the carbon slide in the depth d...

no. 2 example

[0141] This embodiment provides a method for predicting the service life of the pantograph carbon skateboard of a subway vehicle. The service life prediction method is based on the carbon skateboard wear estimation method in the first embodiment, and continues to calculate the distance from the current station to the next station. The wear depth of a station can be similarly obtained from the wear profile formed by the pantograph carbon skateboard traveling once on the entire line, that is, according to the mileage of the entire line traveled by the vehicle, the speed curve, and the current curve, etc., the vehicle can be estimated The wear profile formed by the pantograph carbon skateboard running once on the entire line is cumulatively superimposed on the wear profile, and the mileage traveled when the maximum wear of the carbon skateboard reaches the replacement requirement is calculated (that is, the number of times the entire line is repeatedly driven multiplied by the line...

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Abstract

The invention provides a subway vehicle pantograph carbon slide plate abrasion estimation method and a service life prediction method, which are used for solving the problem that the carbon slide plate abrasion cannot be accurately estimated in the prior art. The invention discloses a wear estimation method and a life prediction method. The method comprises the following steps: calculating the abrasion quantities of the carbon slide plate at different positions within a certain running mileage by combining the arrangement mode of a carbon slide plate abrasion rate curve and a contact line to obtain an abrasion profile transversely distributed along the carbon slide plate, calculating and visualizing the abrasion profile distribution of the carbon slide plate, and further predicting the service life of the carbon slide plate. According to the invention, the wear degree of the carbon slide plate is pre-judged; The carbon slide plate grinding and replacing device has the advantages that targeted carbon slide plate grinding or replacing suggestions are provided for maintenance departments, time and economic cost are reduced, areas with severe abrasion of the carbon slide plate are obtained, corresponding technical adjustment is performed through cause analysis, grooves are prevented from being formed in the carbon slide plate, accordingly, the safety of bow net operation is improved, and certain economic benefits and social benefits are achieved.

Description

technical field [0001] The invention belongs to the field of urban rail transit, and in particular relates to a method for estimating the abrasion of a carbon slide plate of a pantograph of a subway vehicle and a method for predicting its life. Background technique [0002] With the continuous development of the city, rail transit plays an increasingly important role in the normal operation of the city, and safety issues are an important aspect of rail transit. The subway is an important urban rail transit tool, and the traction system of the subway provides power and braking force for the operation of the subway vehicles. When the subway is running, the current enters the motor from the pantograph, and then flows out from the track connected to the ground grid, so as to drive the vehicle. The carbon slide plate of the pantograph is a key component of the subway vehicle. With the expansion of the city, the operating environment of the subway is becoming more and more comple...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 魏秀琨孟鸿飞贾利民何江海刘兰李兆新李正国尹贤贤管青鸾杨子明滕延芹张海强所达翟小婕
Owner BEIJING JIAOTONG UNIV
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