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Method for predicting residual life of finger protection rubber strip of urban rail door system

A technology of life prediction and door system, which is applied in special data processing applications, geometric CAD, computer-aided design, etc., can solve the problems of inaccurate life prediction, different curve fitting effects, and inability to continuously monitor the status of the rubber strips, and achieve a high level of improvement. Operational reliability, reduced maintenance costs, and improved accuracy

Pending Publication Date: 2021-12-21
NANJING KANGNI MECHANICAL & ELECTRICAL
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AI Technical Summary

Problems solved by technology

[0004] The traditional life prediction method is to fit the life curve based on the mechanical property data of the sample. The test is carried out by collecting finger protection strips under different usage times. The sample collection is random, and it is impossible to continuously monitor the state of the strip. The curve fitting effect is different, making the life prediction not accurate enough

Method used

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  • Method for predicting residual life of finger protection rubber strip of urban rail door system
  • Method for predicting residual life of finger protection rubber strip of urban rail door system
  • Method for predicting residual life of finger protection rubber strip of urban rail door system

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Embodiment Construction

[0037] The technical solutions of the present invention will be further described below in conjunction with the embodiments.

[0038] like figure 1 As shown, the method for predicting the remaining life of the urban rail door system finger guard rubber strip according to the present invention, the specific steps are as follows:

[0039] (1) Collect the door-closing current data under the full life cycle operation of the rubber strip, and distinguish and intercept the current curve segment when the rubber strip is extruded.

[0040] like figure 2 Shown is a schematic diagram of the installation position of the finger protection strips. During the process of closing the door in place, the left and right finger protection strips squeeze each other, and the motor current increases. The current curve section of the rubber strip extrusion stage is intercepted, as shown image 3 shown.

[0041] (2) Extract the eigenvalues ​​of the current curve.

[0042] Time-domain feature extr...

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Abstract

The invention discloses a method for predicting residual life of a finger protection rubber strip of an urban rail door system, which comprises the steps of extracting motor current curve characteristics corresponding to rubber strips in different operation time periods, establishing a rubber strip degradation state classification model based on an intelligent algorithm, identifying the degradation state of the current finger protection rubber strip by utilizing the classification model, predicting the remaining life of the rubber strip. and judging whether the adhesive tape needs to be replaced. A finger protection adhesive tape sample does not need to be collected for destructive detection, the state of the adhesive tape can be monitored in real time, the degeneration process of the adhesive tape can be deeply known, the replacement period is scientifically arranged, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to a method for predicting the remaining life of a rubber finger protector, in particular to a method for predicting the remaining life of a rubber finger protector for an urban rail door system. Background technique [0002] With the rapid development of the rail transit industry, the safety and reliability of urban rail doors have attracted widespread attention. The finger guard rubber strip is one of the core components of the rail vehicle door system. When the door is closed in place, the rubber strips squeeze each other to achieve the sealing effect of the door system. The finger protector strip is made of EPDM rubber. During use, it will age and fail due to the influence of the environment, resulting in a decline in the sealing effect of the door. At present, the door finger protection rubber strips of urban rail vehicles are maintained by regular replacement. The replacement frequency is high, and the full life cycle manag...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/27G06F119/04
CPCG06F30/15G06F30/27G06F2119/04
Inventor 王祖进许志兴顾萍萍陈健飞孙畅励
Owner NANJING KANGNI MECHANICAL & ELECTRICAL
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