Urban rail train maintenance period optimization method and device
A technology for maintenance cycle and urban rail trains, applied in the direction of instruments, data processing applications, prediction, etc., can solve the problem of no effective adjustment method of maintenance cycle, to overcome the risk of uncertainty, accurate and reliable evaluation results, and scientific and effective adjustment Effect
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Embodiment 1
[0054] This embodiment proposes a method for optimizing the maintenance period of urban rail trains. By calculating the maintenance adjustment period of each item (the maintenance item of the equipment inspection part), the item period of the equipment inspection part is uniformly adjusted to achieve "equipment inspection". The purpose of repairing optimization is to replace manual work.
[0055] Such as figure 1 shown. The method includes the following steps:
[0056] Step 1: By obtaining the historical detection results and manual re-inspection results of the equipment, calculate the detection accuracy rate R of the equipment for the nth maintenance item n (In the early stage of equipment use, the accuracy rate provided by the manufacturer can be used instead).
[0057] Step 2: By obtaining the historical failure information of the nth item point, calculate the failure rate λ of the item point n n (t) (failure rate as a function of time) can be replaced by the component ...
Embodiment 2
[0080] Based on the optimization method provided by the above embodiments, this embodiment provides a device for optimizing the maintenance cycle of urban rail trains.
[0081] Such as figure 2 As shown, the device includes a first acquisition unit, a second acquisition unit, a first calculation unit, a second calculation unit and an analysis unit:
[0082] The first acquisition unit obtains the historical test results and manual review result data of a certain test equipment, and calculates the detection accuracy rate R of the equipment for the nth maintenance item n (If the detection equipment is in the initial stage of use, the detection accuracy rate R of the equipment for the nth maintenance item n The equipment detection accuracy provided by the manufacturer is obtained by the first acquisition unit instead);
[0083] The second acquisition unit obtains the historical fault data of the nth maintenance item, and calculates the failure rate λ of the nth maintenance item...
Embodiment 3
[0102] Adopt the method and device that above-mentioned embodiment 1 and embodiment 2 propose to be applied to a depot that has increased trackside maintenance equipment, reduce its maintenance personnel investment and satisfy the adjustment of the maintenance period of original maintenance effectiveness, specifically as follows:
[0103] 1. For the item: "Check whether the wheel tread is scratched", according to the factory data provided by the equipment supplier, the detection accuracy rate of "wheelset size and tread scratch detection equipment" for the "tread scratch" item is R n = 75%.
[0104] 2. According to the historical tread abrasion data given by the subway company, the failure rate of "tread abrasion" conforms to the accidental failure model, and the calculated failure rate is: λ n (t) = 0.5% / day (the failure rate at this point is independent of time).
[0105] 3. According to the existing maintenance period of a subway m=4 days, for this point, the existing main...
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