Ushbu tadqiqot ishida maxsus o‘ziyurar harakat tarkibi, xususan,
O‘zbekiston Respublikasi temiryo‘l transportida ekspluatatsiya qilinadigan
ADM (автоматрица дизельная монтажная) turidagi texnik vositalarning
ishonchliligiga ta’sir qiluvchi asosiy omillar har tomonlama tahlil qilingan.
Ishonchlilikning asosiy ko‘rsatkichlari – o‘rtacha ishdan chiqish vaqti, nosozliklarsiz
ishlash ehtimoli, ishlamay qolish darajasi hamda gamma foizli ishlash muddati
atroflicha ko‘rib chiqilgan va ularni hisoblash hamda miqdoriy baholash usullari
asoslab berilgan. Tadqiqotda elektromexanik uskunalarning asinxron dvigatellar va
muftalar bilan ishlovchi tugunlarining ishdan chiqish qonuniyatlari statistik tahlil
asosida o‘rganilgan. Bu qonuniyatlar, asosan, eksponensial va normal taqsimotlar
bilan ifodalanishi aniqlangan. Taqsimot zichligini yaqinlashtiruvchi matematik
formulalar orqali ishonchlilik ko‘rsatkichlarini qayta kalibrlash imkoniyati
asoslab berilgan. Tadqiqot davomida 2019–2023-yillar oralig‘ida 174 dona
ADM turidagi avtomotrisaning texnik holatiga doir diagnostika bayonnomalari
hamda ekspluatatsiya hujjatlari asosida buzilishlar va nosozliklar tahlil qilingan.
Shuningdek, mexanik, elektr va gidravlik tizimlarining ishonchlilik ko‘rsatkichlari
baholangan, nosozliklarning asosiy sabablari aniqlangan va ularning umumiy
tizim ishonchliligiga ta’siri tahlil etilgan. Ilmiy yangilik sifatida avtomotrisalarning
ekspluatatsion holati parametrlarini hisobga oluvchi regressiya modeli ishlab
chiqilgan bo‘lib, u ishonchlilikni bashorat qilish imkonini beradi. Olingan
natijalar asosida ekspluatatsiya rejimlarini optimallashtirish va texnik xizmat
ko‘rsatish tizimini takomillashtirish orqali harakat tarkibining ishonchliligini
oshirish bo‘yicha takliflar ishlab chiqilgan. Tadqiqotning amaliy ahamiyati
shundan iboratki, taklif etilgan metodika mavjud statistik ma’lumotlar asosida
texnik vositalarning ishonchliligini samarali baholash, shu bilan birga, harakat
tarkibining ekspluatatsion tayyorligini oshirish va resursdan samarali foydalanishni
ta’minlashda boshqaruv qarorlarini qabul qilishda muhim vosita bo‘lib xizmat qiladi.
Ushbu tadqiqot ishida maxsus o‘ziyurar harakat tarkibi, xususan,
O‘zbekiston Respublikasi temiryo‘l transportida ekspluatatsiya qilinadigan
ADM (автоматрица дизельная монтажная) turidagi texnik vositalarning
ishonchliligiga ta’sir qiluvchi asosiy omillar har tomonlama tahlil qilingan.
Ishonchlilikning asosiy ko‘rsatkichlari – o‘rtacha ishdan chiqish vaqti, nosozliklarsiz
ishlash ehtimoli, ishlamay qolish darajasi hamda gamma foizli ishlash muddati
atroflicha ko‘rib chiqilgan va ularni hisoblash hamda miqdoriy baholash usullari
asoslab berilgan. Tadqiqotda elektromexanik uskunalarning asinxron dvigatellar va
muftalar bilan ishlovchi tugunlarining ishdan chiqish qonuniyatlari statistik tahlil
asosida o‘rganilgan. Bu qonuniyatlar, asosan, eksponensial va normal taqsimotlar
bilan ifodalanishi aniqlangan. Taqsimot zichligini yaqinlashtiruvchi matematik
formulalar orqali ishonchlilik ko‘rsatkichlarini qayta kalibrlash imkoniyati
asoslab berilgan. Tadqiqot davomida 2019–2023-yillar oralig‘ida 174 dona
ADM turidagi avtomotrisaning texnik holatiga doir diagnostika bayonnomalari
hamda ekspluatatsiya hujjatlari asosida buzilishlar va nosozliklar tahlil qilingan.
Shuningdek, mexanik, elektr va gidravlik tizimlarining ishonchlilik ko‘rsatkichlari
baholangan, nosozliklarning asosiy sabablari aniqlangan va ularning umumiy
tizim ishonchliligiga ta’siri tahlil etilgan. Ilmiy yangilik sifatida avtomotrisalarning
ekspluatatsion holati parametrlarini hisobga oluvchi regressiya modeli ishlab
chiqilgan bo‘lib, u ishonchlilikni bashorat qilish imkonini beradi. Olingan
natijalar asosida ekspluatatsiya rejimlarini optimallashtirish va texnik xizmat
ko‘rsatish tizimini takomillashtirish orqali harakat tarkibining ishonchliligini
oshirish bo‘yicha takliflar ishlab chiqilgan. Tadqiqotning amaliy ahamiyati
shundan iboratki, taklif etilgan metodika mavjud statistik ma’lumotlar asosida
texnik vositalarning ishonchliligini samarali baholash, shu bilan birga, harakat
tarkibining ekspluatatsion tayyorligini oshirish va resursdan samarali foydalanishni
ta’minlashda boshqaruv qarorlarini qabul qilishda muhim vosita bo‘lib xizmat qiladi.
В данном исследовании всесторонне проанализированы основ-
ные факторы, влияющие на надёжность специального самоходного подвиж-
ного состава, в частности автомотрис монтажного типа с дизельным
двигателем (АДМ), эксплуатируемых на железнодорожном транспорте
Республики Узбекистан. Рассмотрены ключевые показатели надёжности:
среднее время безотказной работы, вероятность безотказной эксплуата-
ции, уровень отказов и гамма-процентный срок службы. Обоснованы ме-
тоды расчёта и количественной оценки указанных показателей. На основе
статистического анализа исследованы закономерности выхода из строя уз-
лов электромеханического оборудования, функционирующих с асинхронными
двигателями и муфтами. Установлено, что эти закономерности описывются преимущественно экспоненциальным и нормальным распределениями. Обоснована возможность перекалибровки показателей надёжности с ис-
пользованием приближённых математических формул для плотности рас-
пределения. В ходе исследования проанализированы данные о техническом
состоянии 174 автомотрис типа АДМ за период 2019–2023 годов, собранные
на основе диагностических актов и эксплуатационной документации. Оцене-
ны показатели надёжности механических, электрических и гидравлических
систем, выявлены основные причины отказов и их влияние на общую надёж-
ность системы. Научной новизной работы является разработка регрессион-
ной модели, учитывающей параметры эксплуатационного состояния авто-
мотрис и позволяющей прогнозировать уровень их надёжности. На основе
полученных результатов разработаны предложения по повышению надёж-
ности подвижного состава за счёт оптимизации режимов эксплуатации и
совершенствования системы технического обслуживания. Практическая
значимость исследования заключается в том, что предложенная методи-
ка позволяет эффективно оценивать надёжность технических средств на
основе существующих статистических данных и служит важным инстру-
ментом для принятия управленческих решений, направленных на повышение
эксплуатационной готовности подвижного состава и эффективное исполь-
зование ресурсов.
This research presents a comprehensive analysis of the main factors
affecting the reliability of special self-propelled rolling stock, specifically the ADM
(Avtomotrisa Diesel Mounting) units used in the railway transport system of the
Republic of Uzbekistan. Particular attention is given to key reliability indicators
such as the mean time to failure (MTTF), probability of failure-free operation,
failure rate, and the gamma-percentile life. The study discusses methods for
calculating these indicators and approaches for their quantitative assessment.
The study looked at how different parts of electromechanical equipment, which
work with asynchronous motors and couplings, fail. It was determined that these
failure distributions generally conform to exponential and normal distribution
laws. Mathematical formulas expressing the approximated density of the
reliability distribution are provided, offering more accurate recalibration of
reliability indicators. The analysis is based on technical data from 174 ADM-type
railcars over the period from 2019 to 2023. Diagnostic reports and operational
documents were used as primary sources for evaluating breakdowns and failures.
The study examines the reliability of mechanical, electrical, and hydraulic systems,
identifies the main causes of malfunctions, and assesses their impact on overall
system reliability. The scientific novelty lies in the development of a predictive
model for reliability assessment based on the operational condition parameters
of the railcars and the construction of a regression equation. The obtained
results demonstrate the potential for improving reliability through optimization
of operating modes and enhancement of maintenance systems. The practical
significance of this research is that the proposed methodology allows for effective
evaluation of equipment reliability using statistical data. Moreover, it serves as
a valuable tool for making informed management decisions aimed at extending
service life and improving the operational readiness of rolling stock.
| № | Author name | position | Name of organisation |
|---|---|---|---|
| 1 | Gulamova M.D. | mustaqil izlanuvchi, “Harakatlanish tarkibidan foydalanish” kafedra mudiri | Toshkent transport texnikumi |
| 2 | Muxamedova .G. | texnika fanlari doktori (DcS), “Yuk-transport tizimlari” kafedrasi professori | Toshkent davlat transport universiteti |
| 3 | Ahmedov S.X. | mustaqil izlanuvchi, Xalqaro hamkorlik bo‘limi boshlig‘i | “O‘zbekiston temiryo‘llari” AJ |
| № | Name of reference |
|---|---|
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