{"id":15941,"date":"2026-08-17T02:02:59","date_gmt":"2026-08-17T02:02:59","guid":{"rendered":"https:\/\/www.hndfcrane.com\/?post_type=posts&#038;p=15941"},"modified":"2026-08-17T02:03:02","modified_gmt":"2026-08-17T02:03:02","slug":"overhead-crane-girder-web-crack-analysis","status":"publish","type":"posts","link":"https:\/\/www.hndfcrane.com\/uz\/posts\/overhead-crane-girder-web-crack-analysis\/","title":{"rendered":"Yuqori kranli kiruvchi to&#39;rli yoriqlar tahlili: sabablari va yechimlari"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Mundarija<\/p><nav><ul><li><a href=\"#1-root-causes-of-overhead-crane-girder-web-cracking\">1. Yuqori kran to&#39;sinlari to&#39;rining yorilishining asosiy sabablari<\/a><ul><li><a href=\"#1-1-stress-concentration\">1.1 Stress konsentratsiyasi<\/a><\/li><li><a href=\"#1-2-welding-quality\">1.2 Payvandlash sifati<\/a><\/li><li><a href=\"#1-3-material-defects\">1.3 Materiallardagi nuqsonlar<\/a><\/li><li><a href=\"#1-4-fatigue-loading\">1.4 Charchoq yuklanishi<\/a><\/li><li><a href=\"#1-5-design-deficiencies\">1.5 Dizayn kamchiliklari<\/a><\/li><li><a href=\"#1-6-overloading-and-improper-use\">1.6 Haddan tashqari yuklanish va noto&#39;g&#39;ri foydalanish<\/a><\/li><li><a href=\"#1-7-vibration-and-impact\">1.7 Vibratsiya va ta&#39;sir<\/a><\/li><\/ul><\/li><li><a href=\"#2-solutions-for-overhead-crane-girder-web-cracking\">2. Yuqori kranli to&#39;rli veb-yorilish uchun yechimlar<\/a><ul><li><a href=\"#2-1-improve-structural-design\">2.1 Strukturaviy dizaynni takomillashtirish<\/a><\/li><li><a href=\"#2-2-improve-welding-quality\">2.2 Payvandlash sifatini yaxshilash<\/a><\/li><li><a href=\"#2-3-ensure-material-quality\">2.3 Materiallar sifatini ta&#39;minlang<\/a><\/li><li><a href=\"#2-4-operate-equipment-properly\">2.4 Uskunani to&#39;g&#39;ri ishlating<\/a><\/li><li><a href=\"#2-5-perform-regular-maintenance-and-inspection\">2.5 Muntazam texnik xizmat ko&#39;rsatish va tekshirishni amalga oshiring<\/a><\/li><\/ul><\/li><li><a href=\"#conclusion\">Xulosa<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Asosiy to&#39;sinning oxiridagi o&#39;zgaruvchan kesimdagi to&#39;r yorilishi uzoq muddatli xizmat ko&#39;rsatish paytida ko&#39;prik kranlarida keng tarqalgan va jiddiy muammo hisoblanadi. Yoriqlar paydo bo&#39;lishining sabablarini tushunish oldini olish va ularni bartaraf etish uchun juda muhimdir. Quyida ko&#39;prik kranining asosiy to&#39;sinning oxiridagi o&#39;zgaruvchan kesimdagi to&#39;r yorilishining sabablari tahlili keltirilgan.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2422\" height=\"1614\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Main-girder-end-web-crack.png\" alt=\"\" class=\"wp-image-15933\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Main-girder-end-web-crack.png 2422w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Main-girder-end-web-crack-1536x1024.png 1536w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Main-girder-end-web-crack-2048x1365.png 2048w\" sizes=\"(max-width: 2422px) 100vw, 2422px\" \/><figcaption class=\"wp-element-caption\">Asosiy to&#39;sin uchi to&#39;ridagi yoriq: yoriq asosiy to&#39;sin va uchi aravachasi ulanadigan o&#39;zgaruvchan kesimning burchagida paydo bo&#39;ladi.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-root-causes-of-overhead-crane-girder-web-cracking\">1. Yuqori kran to&#39;sinlari to&#39;rining yorilishining asosiy sabablari<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-1-stress-concentration\">1.1 Stress konsentratsiyasi<\/h3>\n\n\n\n<p>Turli ish sharoitlarida o&#39;lchov talablarini, shuningdek, mustahkamlik va qattiqlik ehtiyojlarini qondirish uchun asosiy to&#39;sinning uchi ko&#39;pincha o&#39;zgaruvchan kesim bilan loyihalashtiriladi. Biroq, kesim o&#39;zgarishidagi geometrik uzilish kuchlanish kontsentratsiyasini hosil qiladi, ya&#39;ni o&#39;zgaruvchan kesimdagi kuchlanish boshqa sohalarga qaraganda ancha yuqori. Kuchlanish kontsentratsiyasi zonalari yoriqlar paydo bo&#39;lishi va tarqalishiga moyil. Masalan, ko&#39;taruvchi kranning mexanik tahlili shuni ko&#39;rsatadiki, ekvivalent kuchlanish konturi o&#39;zgaruvchan kesimda boshqa joylarga qaraganda sezilarli darajada yuqori kuchlanishni namoyon qiladi.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1035\" height=\"690\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Equivalent-stress-contour-of-an-overhead-crane.png\" alt=\"\" class=\"wp-image-15938\"\/><\/figure>\n\n\n\n<p>Yuqorida tahlil qilingan mahsulot o&#39;zgaruvchan kesimda qiyalik o&#39;tishga ega, bu holda struktura esa to&#39;g&#39;ri burchakli o&#39;tishdan foydalanadi, bu esa yanada og&#39;irroq stress kontsentratsiyasi holatini yaratadi.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-2-welding-quality\">1.2 Payvandlash sifati<\/h3>\n\n\n\n<p>Payvandlash sifati bevosita strukturaviy xavfsizlik va xizmat muddatiga ta&#39;sir qiladi. Noto&#39;g&#39;ri payvandlash operatsiyalari g&#39;ovaklik, shlak qo&#39;shilishlari, to&#39;liq bo&#39;lmagan kirish va payvandlash yoriqlari kabi nuqsonlarni osongina keltirib chiqarishi mumkin. Bu nuqsonlar kuchlanish kontsentratsiyasi nuqtalari bo&#39;lib xizmat qiladi va tashqi yuklar ostida osongina yoriqlar paydo bo&#39;lish joylariga aylanadi. Payvandlash geometriyasining murakkabligi tufayli payvandlash sifati bilan bog&#39;liq muammolar o&#39;zgaruvchan kesimlarda yuzaga kelishi ehtimoli ko&#39;proq. Bu holda, o&#39;zgaruvchan kesimli payvandning to&#39;g&#39;ri burchak burchagida payvandlash sifatini kafolatlash qiyin.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-3-material-defects\">1.3 Materiallardagi nuqsonlar<\/h3>\n\n\n\n<p>Ishlab chiqarish jarayonidagi texnologik muammolar tufayli po&#39;latda metall bo&#39;lmagan qo&#39;shimchalar, g&#39;ovaklilik va mikro yoriqlar kabi ichki nuqsonlar mavjud bo&#39;lishi mumkin. Bu nuqsonlar stress ostida tarqalib, ko&#39;rinadigan yoriqlarga aylanadi. Bundan tashqari, turli partiyalar orasidagi material xususiyatlarining o&#39;zgarishi mahalliy stress konsentratsiyasiga olib kelishi mumkin, bu esa yoriqlarni keltirib chiqarishi mumkin. Bu holat uchun material haqida ma&#39;lumot mavjud emas, shuning uchun material nuqsonlarini qo&#39;shimcha omil sifatida inkor etib bo&#39;lmaydi.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-4-fatigue-loading\">1.4 Charchoq yuklanishi<\/h3>\n\n\n\n<p>Ko&#39;taruvchi kranlar ish paytida tez-tez takroriy dinamik yuklarga duchor bo&#39;ladi. Asosiy to&#39;sinning o&#39;zgaruvchan kesimi, ayniqsa yuklarni ko&#39;tarishda, tsiklik kuchlanish o&#39;zgarishlarini boshdan kechiradi. Bu takroriy kuchlanish tsikli materialning charchoqning yo&#39;qolishiga olib keladi \u2014 kuchlanish darajasi materialning egilish kuchidan past bo&#39;lganda ham uzoq vaqt xizmat qilgandan keyin charchoq yoriqlari paydo bo&#39;lishi mumkin. O&#39;zgaruvchan kesim kuchlanish konsentratsiyasi va material charchoqining birgalikdagi ta&#39;siri tufayli yorilishga ko&#39;proq moyil bo&#39;ladi.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-5-design-deficiencies\">1.5 Dizayn kamchiliklari<\/h3>\n\n\n\n<p>Yorilish xavfini oshiradigan loyihalash omillari orasida silliq kontursiz keskin kesim o&#39;tishlari, kuchlanish kontsentratsiyasi ta&#39;sirini yetarlicha hisobga olmaslik va charchoqni loyihalash masalalarini e&#39;tiborsiz qoldirish kiradi. Loyihalash bosqichida o&#39;zgaruvchan kesimda mustahkamlashni qo&#39;llamaslik uzoq muddatli xizmat ko&#39;rsatishda ham yorilishga olib kelishi mumkin. Shuning uchun to&#39;g&#39;ri loyihalash yoriqlar hosil bo&#39;lishini kamaytirishda muhim rol o&#39;ynaydi. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-6-overloading-and-improper-use\">1.6 Haddan tashqari yuklanish va noto&#39;g&#39;ri foydalanish<\/h3>\n\n\n\n<p>Kranlar amaldagi standartlarga muvofiq ma&#39;lum bir xavfsizlik chegarasi bilan ishlab chiqilgan bo&#39;lsa-da, amalda ortiqcha yuklanish va qiyshayish yoki diagonal ko&#39;tarish kam uchraydigan holat emas. Tez-tez ortiqcha yuklanish va noto&#39;g&#39;ri ko&#39;tarish amaliyotlari asosiy to&#39;sinni loyihalash qiymatlaridan tashqari kuchlanishlarga duchor qiladi, bu esa mahalliy kuchlanish konsentratsiyasiga, materialning charchashining tezlashishiga va oxir-oqibat yoriqlar hosil bo&#39;lishiga olib keladi. Haddan tashqari yuklanish, shuningdek, strukturaviy deformatsiyaga olib kelishi mumkin, bu esa kuchlanish konsentratsiyasini va yoriqlar tarqalishini yanada kuchaytiradi.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-7-vibration-and-impact\">1.7 Vibratsiya va ta&#39;sir<\/h3>\n\n\n\n<p>Kranlar ish paytida muqarrar ravishda tebranish va zarbaga duchor bo&#39;ladi. Haddan tashqari rels bo&#39;g&#39;imlari orasidagi bo&#39;shliqlar kran rels bo&#39;g&#39;imlari bo&#39;ylab harakatlanayotganda sezilarli zarba yuklarini hosil qilishi mumkin. Uzoq muddatli tebranish va zarba charchoqqa olib keladi va mikro yoriqlarning tarqalishiga yordam beradi. Yoriqlar kuchlanish konsentratsiyasi allaqachon mavjud bo&#39;lgan o&#39;zgaruvchan kesimlarda paydo bo&#39;lishi va tarqalishi ehtimoli ko&#39;proq.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-solutions-for-overhead-crane-girder-web-cracking\">2. Yuqori kranli to&#39;rli veb-yorilish uchun yechimlar<\/h2>\n\n\n\n<p>Yuqori kran asosiy to&#39;sinining oxiridagi o&#39;zgaruvchan kesimda to&#39;r yorilishining oldini olish va kamaytirish uchun keng qamrovli choralar ko&#39;rilishi kerak:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-1-improve-structural-design\">2.1 Strukturaviy dizaynni takomillashtirish<\/h3>\n\n\n\n<p>Stress konsentratsiyasini kamaytirish uchun silliq, bosqichma-bosqich o&#39;tishlardan foydalanib, o&#39;zgaruvchan kesim dizaynini optimallashtiring. Uzoq muddatli charchoq muammolarini hal qilish uchun charchoq dizaynini qo&#39;llang. Tavsiya etilgan tuzatish choralari quyidagilarni o&#39;z ichiga oladi:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"720\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Adding-a-gusset-plate-at-the-connection-plate.png\" alt=\"\" class=\"wp-image-15947\"\/><\/figure>\n\n\n\n<p>Mahalliy qattiqlikni yaxshilash uchun quyidagi rasmda ko&#39;rsatilgandek, ulanish joyiga uchburchak gusset plitalarini qo&#39;shing.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2496\" height=\"1664\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-plate-scheme.png\" alt=\"\" class=\"wp-image-15935\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-plate-scheme.png 2496w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-plate-scheme-1536x1024.png 1536w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-plate-scheme-2048x1365.png 2048w\" sizes=\"(max-width: 2496px) 100vw, 2496px\" \/><\/figure>\n\n\n\n<p>Yana bir yondashuv - quyidagi rasmda ko&#39;rsatilgandek, yamoqlash orqali mustahkamlash.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2496\" height=\"1664\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-by-patching.png\" alt=\"\" class=\"wp-image-15936\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-by-patching.png 2496w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-by-patching-1536x1024.png 1536w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-by-patching-2048x1365.png 2048w\" sizes=\"(max-width: 2496px) 100vw, 2496px\" \/><\/figure>\n\n\n\n<p>Biroq, asl konstruktsiyaning pastki qismida mustahkamlovchi plastinka allaqachon mavjud bo&#39;lganligi sababli, har qanday yangi mustahkamlovchi plastinka mavjud bo&#39;lganidan qochish uchun joylashtirilishi kerak. Bu qo&#39;shni payvandlash joylarida ma&#39;lum bir kuchlanish konsentratsiyasi muammosini keltirib chiqaradi.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-2-improve-welding-quality\">2.2 Payvandlash sifatini yaxshilash<\/h3>\n\n\n\n<p>Payvandlash jarayonida nuqsonlar yo&#39;qligini ta&#39;minlash uchun payvandlash jarayonini qat&#39;iy nazorat qiling. Payvandlashdagi nuqsonlarni tezda aniqlash va tuzatish uchun ultratovushli sinov (UT) va radiografik sinov (RT) kabi ilg&#39;or payvandlash texnikasi va tekshirish usullaridan foydalaning. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-3-ensure-material-quality\">2.3 Materiallar sifatini ta&#39;minlang<\/h3>\n\n\n\n<p>Dastlabki nuqsonlari bo&#39;lmagan yuqori sifatli materiallardan foydalaning. Material xususiyatlari talablarga javob berishini tasdiqlash uchun muntazam ravishda material sinovlarini o&#39;tkazing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-4-operate-equipment-properly\">2.4 Uskunani to&#39;g&#39;ri ishlating<\/h3>\n\n\n\n<p>Haddan tashqari yuklanishning oldini olish uchun operatorlar uchun zarur bo&#39;lgan treninglarni o&#39;tkazing. Uskunaning xizmat muddatini uzaytirish uchun uni loyihalash talablariga muvofiq boshqaring va texnik xizmat ko&#39;rsating.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-5-perform-regular-maintenance-and-inspection\">2.5 Muntazam texnik xizmat ko&#39;rsatish va tekshirishni amalga oshiring<\/h3>\n\n\n\n<p>Yoriqlarni tezda aniqlash va ta&#39;mirlash uchun ko&#39;taruvchi kranlarni muntazam ravishda texnik xizmat ko&#39;rsatish tekshiruvlarini o&#39;tkazing, ayniqsa o&#39;zgaruvchan kesim maydonlarini kuzatishga e&#39;tibor bering.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Xulosa<\/h2>\n\n\n\n<p>Ushbu ko&#39;prik kran to&#39;sinlari to&#39;rining yorilishini tahlil qilishda ko&#39;rsatilgan chora-tadbirlar ko&#39;prik kranining asosiy to&#39;sinlari oxiridagi o&#39;zgaruvchan kesimdagi to&#39;rning yorilishini samarali ravishda oldini olish va kamaytirishi, uskunaning xavfsiz ishlashini ta&#39;minlashi mumkin. <\/p>","protected":false},"excerpt":{"rendered":"Asosiy to&#39;sinning oxiridagi o&#39;zgaruvchan kesimdagi to&#39;r yorilishi uzoq muddatli xizmat ko&#39;rsatish paytida ko&#39;prikli kranlarda keng tarqalgan va jiddiy muammo hisoblanadi. Yoriqlar paydo bo&#39;lishining sabablarini tushunish oldini olish va ularni bartaraf etish uchun juda muhimdir. Quyida oxiridagi o&#39;zgaruvchan kesimdagi to&#39;r yorilishining sabablari tahlili keltirilgan [\u2026]","protected":false},"featured_media":15933,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[197],"posts_tag":[247],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/xmxposts\/15941"}],"collection":[{"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":7,"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/xmxposts\/15941\/revisions"}],"predecessor-version":[{"id":15951,"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/xmxposts\/15941\/revisions\/15951"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/media\/15933"}],"wp:attachment":[{"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/media?parent=15941"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/posts_category?post=15941"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/posts_tag?post=15941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}