{"id":11026,"date":"2025-03-01T09:28:51","date_gmt":"2025-03-01T09:28:51","guid":{"rendered":"https:\/\/www.hndfcrane.com\/?post_type=posts&#038;p=11026"},"modified":"2025-03-01T09:28:56","modified_gmt":"2025-03-01T09:28:56","slug":"overhead-crane-wire-rope-selection-inspection","status":"publish","type":"posts","link":"https:\/\/www.hndfcrane.com\/cs\/posts\/overhead-crane-wire-rope-selection-inspection\/","title":{"rendered":"Lana mostov\u00e9ho je\u0159\u00e1bu: v\u00fdb\u011br, kontrola a \u00fadr\u017eba"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Obsah<\/p><nav><ul><li><a href=\"#selection-of-overhead-crane-wire-ropes\">V\u00fdb\u011br ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f<\/a><ul><li><a href=\"#1-determining-the-safety-factor-of-wire-ropes\">1. Stanoven\u00ed bezpe\u010dnostn\u00edho faktoru ocelov\u00fdch lan<\/a><\/li><li><a href=\"#2-strength-calculation-of-wire-ropes\">2. V\u00fdpo\u010det pevnosti ocelov\u00fdch lan<\/a><\/li><li><a href=\"#3-structure-of-wire-ropes\">3. Struktura ocelov\u00fdch lan<\/a><\/li><\/ul><\/li><li><a href=\"#proper-use-of-overhead-crane-wire-ropes\">Spr\u00e1vn\u00e9 pou\u017e\u00edv\u00e1n\u00ed ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f<\/a><ul><li><a href=\"#correct-unreeling-method-for-wire-ropes\">Spr\u00e1vn\u00e1 metoda odv\u00edjen\u00ed dr\u00e1t\u011bn\u00fdch lan<\/a><\/li><li><a href=\"#correct-method-for-threading-wire-ropes\">Spr\u00e1vn\u00e1 metoda navl\u00e9k\u00e1n\u00ed dr\u00e1t\u011bn\u00fdch lan<\/a><\/li><\/ul><\/li><li><a href=\"#inspection-methods-for-overhead-crane-wire-ropes\">Metody kontroly ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f<\/a><ul><li><a href=\"#visual-inspection\">Vizu\u00e1ln\u00ed kontrola<\/a><\/li><li><a href=\"#manual-inspection\">Ru\u010dn\u00ed kontrola<\/a><\/li><li><a href=\"#instrument-inspection\">Kontrola p\u0159\u00edstroje<\/a><\/li><\/ul><\/li><li><a href=\"#maintenance-of-overhead-crane-wire-ropes\">\u00dadr\u017eba ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f<\/a><ul><li><a href=\"#manual-rope-arrangement\">Ru\u010dn\u00ed uspo\u0159\u00e1d\u00e1n\u00ed lana<\/a><\/li><li><a href=\"#requirements-for-wire-rope-arrangement-on-the-drum\">Po\u017eadavky na uspo\u0159\u00e1d\u00e1n\u00ed dr\u00e1t\u011bn\u00e9ho lana na bubnu<\/a><\/li><li><a href=\"#wire-rope-lubrication\">Maz\u00e1n\u00ed ocelov\u00fdch lan<\/a><\/li><li><a href=\"#inspection-and-recording\">Kontrola a z\u00e1znam<\/a><\/li><\/ul><\/li><li><a href=\"#conclusion\">Z\u00e1v\u011br<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>V procesu je\u0159\u00e1bov\u00fdch operac\u00ed hraj\u00ed ocelov\u00e1 lana z\u00e1sadn\u00ed roli. Proto\u017ee ocelov\u00e1 lana jsou kritick\u00fdmi sou\u010d\u00e1stmi je\u0159\u00e1b\u016f, je nezbytn\u00e9, aby je oper\u00e1to\u0159i vhodn\u011b vyu\u017e\u00edvali, vybrali spr\u00e1vn\u00fd typ ocelov\u00e9ho lana mostov\u00e9ho je\u0159\u00e1bu na z\u00e1klad\u011b pracovn\u00edho prost\u0159ed\u00ed a zvl\u00e1dli spr\u00e1vn\u00e9 kontroln\u00ed metody. Tento p\u0159\u00edstup \u00fa\u010dinn\u011b zvy\u0161uje celkovou kvalitu pr\u00e1ce a zaji\u0161\u0165uje stabilitu a bezpe\u010dnost je\u0159\u00e1bov\u00fdch operac\u00ed. Tento \u010dl\u00e1nek analyzuje v\u00fdb\u011br a metody kontroly ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f s c\u00edlem neust\u00e1le zlep\u0161ovat syst\u00e9m pr\u00e1ce a optimalizovat v\u00fdkon ocelov\u00fdch lan je\u0159\u00e1b\u016f v praktick\u00fdch aplikac\u00edch.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"666\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2025\/03\/Overhead-Crane-Wire-Rope.png\" alt=\"\" class=\"wp-image-11027\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"selection-of-overhead-crane-wire-ropes\">V\u00fdb\u011br ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f<\/h2>\n\n\n\n<p>Dr\u00e1t\u011bn\u00e1 lana jsou kritickou sou\u010d\u00e1st\u00ed je\u0159\u00e1b\u016f. Pokud je v\u00fdb\u011br nespr\u00e1vn\u00fd, ovlivn\u00ed to celkov\u00fd postup pr\u00e1ce a povede k v\u00e1\u017en\u00fdm bezpe\u010dnostn\u00edm nehod\u00e1m. Na z\u00e1klad\u011b pracovn\u00edch norem pro ocelov\u00e1 lana je\u0159\u00e1b\u016f mus\u00ed b\u00fdt b\u011bhem v\u00fdb\u011brov\u00e9ho procesu nejprve zv\u00e1\u017een bezpe\u010dnostn\u00ed faktor ocelov\u00e9ho lana, aby bylo zaji\u0161t\u011bno, \u017ee vyhovuje p\u0159\u00edslu\u0161n\u00fdm n\u00e1rodn\u00edm norm\u00e1m. Pokud bezpe\u010dnostn\u00ed faktor ocelov\u00e9ho lana neodpov\u00edd\u00e1 norm\u00e1m, bude p\u0159edstavovat potenci\u00e1ln\u00ed bezpe\u010dnostn\u00ed rizika. Za druh\u00e9, p\u0159i v\u00fdb\u011bru je t\u0159eba vz\u00edt v \u00favahu i cenu ocelov\u00e9ho lana. Aby byla zaji\u0161t\u011bna celkov\u00e1 efektivita pr\u00e1ce, mus\u00ed oper\u00e1to\u0159i analyzovat n\u00e1klady na ocelov\u00e1 lana po\u017eadovan\u00e1 pro konkr\u00e9tn\u00ed pracovn\u00ed prost\u0159ed\u00ed je\u0159\u00e1bu, \u010d\u00edm\u017e se zlep\u0161\u00ed celkov\u00e1 n\u00e1kladov\u00e1 efektivita. Kone\u010dn\u011b je t\u0159eba v\u011bnovat velkou pozornost mno\u017estv\u00ed ocelov\u00fdch lan, kter\u00e9 by m\u011blo b\u00fdt stanoveno na z\u00e1klad\u011b skute\u010dn\u00fdch pracovn\u00edch po\u017eadavk\u016f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-determining-the-safety-factor-of-wire-ropes\">1. Stanoven\u00ed bezpe\u010dnostn\u00edho faktoru ocelov\u00fdch lan<\/h3>\n\n\n\n<p>P\u0159i v\u00fdb\u011bru ocelov\u00fdch lan mostov\u00e9ho je\u0159\u00e1bu je nutn\u00e9 zv\u00e1\u017eit typ je\u0159\u00e1bu a bezpe\u010dnostn\u00ed faktor ocelov\u00e9ho lana. P\u0159i ur\u010dov\u00e1n\u00ed stupn\u011b bezpe\u010dnosti ocelov\u00e9ho lana je t\u0159eba vz\u00edt v \u00favahu faktory, jako je stupe\u0148 vylamov\u00e1n\u00ed a zdvihac\u00edho mechanismu je\u0159\u00e1bu. P\u0159i ur\u010dov\u00e1n\u00ed bezpe\u010dnostn\u00edch parametr\u016f ocelov\u00fdch lan je\u0159\u00e1b\u016f mus\u00ed provozovatel\u00e9 stanovit bezpe\u010dnostn\u00ed faktor v souladu s p\u0159\u00edslu\u0161n\u00fdmi regula\u010dn\u00edmi po\u017eadavky.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Pracovn\u00ed povinnost<\/td><td>M1<\/td><td>M2<\/td><td>M3<\/td><td>M4<\/td><td>M5<\/td><td>M6<\/td><td>M7<\/td><td>M8<\/td><\/tr><tr><td>Bezpe\u010dnostn\u00ed faktor<\/td><td>3.15<\/td><td>3.35<\/td><td>3.55<\/td><td>4<\/td><td>4.5<\/td><td>5.6<\/td><td>7.1<\/td><td>9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-strength-calculation-of-wire-ropes\">2. V\u00fdpo\u010det pevnosti ocelov\u00fdch lan<\/h3>\n\n\n\n<p>V procesu v\u00fdb\u011bru ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f je nutn\u00e9 pou\u017e\u00edt odpov\u00eddaj\u00edc\u00ed vzorce pro v\u00fdpo\u010det pr\u016fm\u011bru ocelov\u00e9ho lana, co\u017e zaji\u0161\u0165uje v\u011bdeck\u00fd z\u00e1klad pro v\u00fdb\u011br.<\/p>\n\n\n\n<p>F<sub>1<\/sub>\u2265F<sub>max<\/sub>S<\/p>\n\n\n\n<ul>\n<li>F<sub>1<\/sub>\u200b: Minim\u00e1ln\u00ed p\u0159eru\u0161ovac\u00ed s\u00edla ocelov\u00e9ho lana<\/li>\n\n\n\n<li>F<sub>max<\/sub>\u200b: Maxim\u00e1ln\u00ed statick\u00e1 pracovn\u00ed s\u00edla ocelov\u00e9ho lana je\u0159\u00e1bu<\/li>\n\n\n\n<li>S: Bezpe\u010dnostn\u00ed faktor ocelov\u00e9ho lana<\/li>\n<\/ul>\n\n\n\n<p>F<sub>0<\/sub>\u2265(F<sub>max<\/sub>\/\u03c6<sub>i<\/sub>)S<\/p>\n\n\n\n<ul>\n<li>F<sub>0<\/sub>\u200b: Celkov\u00e1 s\u00edla p\u0159etr\u017een\u00ed ocelov\u00e9ho lana<\/li>\n\n\n\n<li>\u03c6<sub>i<\/sub>\u200b: Koeficient p\u0159em\u011bny pro s\u00edlu p\u0159etr\u017een\u00ed ocelov\u00e9ho lana je\u0159\u00e1bu<\/li>\n<\/ul>\n\n\n\n<p>Na z\u00e1klad\u011b v\u00fdsledk\u016f v\u00fdpo\u010dt\u016f lze ur\u010dit, zda pevnost ocelov\u00e9ho lana odpov\u00edd\u00e1 pracovn\u00edm po\u017eadavk\u016fm, zaji\u0161\u0165uj\u00edc\u00edm bezpe\u010dnost a stabilitu je\u0159\u00e1bov\u00fdch operac\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-structure-of-wire-ropes\">3. Struktura ocelov\u00fdch lan<\/h3>\n\n\n\n<p>Kontaktn\u00ed metody je\u0159\u00e1bov\u00fdch ocelov\u00fdch lan zahrnuj\u00ed p\u0159edev\u0161\u00edm bodov\u00fd kontakt, liniov\u00fd kontakt a povrchov\u00fd kontakt. Oper\u00e1to\u0159i mus\u00ed vybrat vhodn\u00e9 ocelov\u00e9 lano na z\u00e1klad\u011b provozn\u00edch parametr\u016f je\u0159\u00e1bu, aby zajistili v\u011bdecky podlo\u017een\u00fd v\u00fdb\u011br. Nap\u0159\u00edklad b\u011bhem procesu v\u00fdb\u011bru mohou oper\u00e1to\u0159i ur\u010dit struktur\u00e1ln\u00ed formu ocelov\u00e9ho lana pomoc\u00ed metod, jako je kontakt lana, k\u0159\u00ed\u017eov\u00e9 pokl\u00e1d\u00e1n\u00ed a kruhov\u00fd pramen s ocelov\u00fdm j\u00e1drem. To pom\u00e1h\u00e1 zjistit, zda vybran\u00e9 ocelov\u00e9 lano m\u016f\u017ee spl\u0148ovat provozn\u00ed po\u017eadavky je\u0159\u00e1bu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"proper-use-of-overhead-crane-wire-ropes\">Spr\u00e1vn\u00e9 pou\u017e\u00edv\u00e1n\u00ed ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f<\/h2>\n\n\n\n<p>P\u0159i provozu je\u0159\u00e1b\u016f hraj\u00ed ocelov\u00e1 lana z\u00e1sadn\u00ed roli. Proto je nezbytn\u00e9 spr\u00e1vn\u011b zach\u00e1zet s v\u00fdb\u011brem a pou\u017e\u00edv\u00e1n\u00edm ocelov\u00fdch lan. Pokud rota\u010dn\u00ed moment vnit\u0159n\u00edch a vn\u011bj\u0161\u00edch pramen\u016f ocelov\u00e9ho lana postr\u00e1d\u00e1 rovnov\u00e1hu, naru\u0161\u00ed se d\u00e9lka ulo\u017een\u00ed ocelov\u00e9ho lana, co\u017e povede k prov\u011b\u0161en\u00ed ocelov\u00e9ho lana. To zase ovliv\u0148uje nosnost ocelov\u00e9ho lana je\u0159\u00e1bu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"correct-unreeling-method-for-wire-ropes\">Spr\u00e1vn\u00e1 metoda odv\u00edjen\u00ed dr\u00e1t\u011bn\u00fdch lan<\/h3>\n\n\n\n<p>Je\u0159\u00e1bov\u00e1 ocelov\u00e1 lana se prim\u00e1rn\u011b odv\u00edjej\u00ed nebo instaluj\u00ed ve svitc\u00edch. P\u0159i odv\u00edjen\u00ed nebo instalaci ocelov\u00fdch lan by m\u011bla b\u00fdt p\u0159ijata r\u016fzn\u00e1 opat\u0159en\u00ed, aby se zabr\u00e1nilo rotaci ocelov\u00e9ho lana dovnit\u0159 nebo ven, proto\u017ee to m\u016f\u017ee zp\u016fsobit smy\u010dkov\u00e1n\u00ed, zauzlov\u00e1n\u00ed nebo oh\u00fdb\u00e1n\u00ed, \u010d\u00edm\u017e se ocelov\u00e9 lano stane nepou\u017eiteln\u00fdm. To zahrnuje odv\u00edjen\u00ed z c\u00edvky lana nebo c\u00edvky. B\u011bhem skute\u010dn\u00fdch operac\u00ed, p\u0159i odv\u00edjen\u00ed ocelov\u00e9ho lana, by se m\u011blo zabr\u00e1nit n\u00e1hodn\u00e9mu tah\u00e1n\u00ed, aby se zabr\u00e1nilo kroucen\u00ed nebo smy\u010dkov\u00e1n\u00ed ocelov\u00e9ho lana je\u0159\u00e1bu. Aby se p\u0159ede\u0161lo t\u011bmto ne\u017e\u00e1douc\u00edm tendenc\u00edm, ocelov\u00e9 lano by m\u011blo b\u00fdt odv\u00edjeno v p\u0159\u00edm\u00e9 linii pod minim\u00e1ln\u00ed povolenou v\u016fl\u00ed.<\/p>\n\n\n\n<p>P\u0159i instalaci ocelov\u00fdch lan, pokud to pracovn\u00ed prost\u0159ed\u00ed a podm\u00ednky dovoluj\u00ed, je nezbytn\u00e9 zajistit, aby se ocelov\u00e9 lano kroutilo v\u017edy stejn\u00fdm sm\u011brem. Konkr\u00e9tn\u011b ocelov\u00e1 lana odvinut\u00e1 z horn\u00ed \u010d\u00e1sti navij\u00e1ku by m\u011bla vstupovat do horn\u00ed \u010d\u00e1sti je\u0159\u00e1bu nebo bubnu kladkostroje, zat\u00edmco ocelov\u00e1 lana nenavinut\u00e1 ze spodn\u00ed \u010d\u00e1sti navij\u00e1ku by m\u011bla vstupovat do spodn\u00ed \u010d\u00e1sti je\u0159\u00e1bu nebo bubnu kladkostroje. Pokud je p\u0159edn\u00ed konec ocelov\u00e9ho lana proti sm\u011bru hodinov\u00fdch ru\u010di\u010dek, c\u00edvka by m\u011bla b\u00fdt vytvo\u0159ena proti sm\u011bru hodinov\u00fdch ru\u010di\u010dek. B\u011bhem procesu nav\u00edjen\u00ed ocelov\u00fdch lan je\u0159\u00e1b\u016f by m\u011bla b\u00fdt cel\u00e1 c\u00edvka namontov\u00e1na na vyhrazenou oto\u010dnou konzolu. B\u011bhem f\u00e1ze odv\u00edjen\u00ed by se ocelov\u00e9 lano na bubnu zdvihac\u00edho mechanismu m\u011blo ot\u00e1\u010det rovnom\u011brn\u011b a sm\u011br ocelov\u00e9ho lana a c\u00edvky by m\u011bl b\u00fdt tak\u00e9 vyrovn\u00e1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"correct-method-for-threading-wire-ropes\">Spr\u00e1vn\u00e1 metoda navl\u00e9k\u00e1n\u00ed dr\u00e1t\u011bn\u00fdch lan<\/h3>\n\n\n\n<p>Pro spr\u00e1vnou aplikaci je\u0159\u00e1bov\u00fdch ocelov\u00fdch lan je z\u00e1sadn\u00ed zvolit vhodn\u00fd sm\u011br pokl\u00e1dky ocelov\u00e9ho lana, zejm\u00e9na p\u0159i procesu navl\u00e9k\u00e1n\u00ed. Zvl\u00e1\u0161tn\u00ed pozornost je t\u0159eba v\u011bnovat sm\u011bru pokl\u00e1dky ocelov\u00e9ho lana je\u0159\u00e1bu. P\u0159i v\u00fdm\u011bn\u011b nebo v\u00fdm\u011bn\u011b ocelov\u00e9ho lana je\u0159\u00e1bu je t\u0159eba db\u00e1t na polohu konce v dr\u00e1\u017ece lana a pevnou polohu na horn\u00edm konci bubnu.<\/p>\n\n\n\n<ul>\n<li>P\u0159i pou\u017eit\u00ed je\u0159\u00e1bov\u00fdch ocelov\u00fdch lan na lev\u00e9 stran\u011b by se ocelov\u00e9 lano m\u011blo nav\u00edjet zleva doprava, p\u0159i\u010dem\u017e ocelov\u00e9 lano vystupuje ze spodn\u00ed strany.<\/li>\n\n\n\n<li>P\u0159i pou\u017eit\u00ed pravo ulo\u017een\u00fdch ocelov\u00fdch lan:\n<ul>\n<li>V prvn\u00edm sc\u00e9n\u00e1\u0159i by se ocelov\u00e9 lano m\u011blo nav\u00edjet zleva doprava, p\u0159i\u010dem\u017e ocelov\u00e9 lano vystupuje z horn\u00ed strany bubnu.<\/li>\n\n\n\n<li>Ve druh\u00e9m sc\u00e9n\u00e1\u0159i by se ocelov\u00e9 lano m\u011blo nav\u00edjet zprava doleva, p\u0159i\u010dem\u017e ocelov\u00e9 lano vystupuje ze spodn\u00ed strany bubnu.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"inspection-methods-for-overhead-crane-wire-ropes\">Metody kontroly ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"visual-inspection\">Vizu\u00e1ln\u00ed kontrola<\/h3>\n\n\n\n<p>Po ur\u010den\u00ed modelu a mno\u017estv\u00ed je\u0159\u00e1bov\u00fdch ocelov\u00fdch lan mus\u00ed obsluha prov\u00e9st vizu\u00e1ln\u00ed kontrolu. B\u011bhem tohoto procesu mus\u00ed zkontrolovat, zda ocelov\u00e1 lana nevykazuj\u00ed zn\u00e1mky po\u0161kozen\u00ed. Sou\u010dasn\u00fd trh s ocelov\u00fdmi lany je\u0159\u00e1b\u016f zahrnuje pad\u011blky a nekvalitn\u00ed produkty, kter\u00e9 nemohou zaru\u010dit spolehlivost aplikac\u00ed ocelov\u00fdch lan. Proto je p\u0159i vizu\u00e1ln\u00ed kontrole nezbytn\u00e9 zajistit, aby v\u0161echna ocelov\u00e1 lana je\u0159\u00e1bu nevykazovala probl\u00e9my s kvalitou a vyvarovat se pou\u017eit\u00ed vadn\u00fdch ocelov\u00fdch lan.<\/p>\n\n\n\n<p>B\u011bhem vizu\u00e1ln\u00ed kontroly mohou oper\u00e1to\u0159i pou\u017e\u00edt metodu srovn\u00e1vac\u00ed anal\u00fdzy. Ve stavebn\u00edch projektech je p\u0159i v\u00fdb\u011bru je\u0159\u00e1bov\u00fdch lan vhodn\u00e9 nav\u00e1zat dlouhodob\u00e1 partnerstv\u00ed s v\u00fdrobci ocelov\u00fdch lan. Porovn\u00e1n\u00edm nepou\u017eit\u00fdch je\u0159\u00e1bov\u00fdch ocelov\u00fdch lan s nov\u011b zakoupen\u00fdmi mohou oper\u00e1to\u0159i ur\u010dit, zda se nevyskytuj\u00ed n\u011bjak\u00e9 probl\u00e9my s kvalitou vzhledu ocelov\u00fdch lan. Pokud je celkov\u00fd stav ocelov\u00e9ho lana je\u0159\u00e1bu p\u0159ijateln\u00fd, ale n\u011bkter\u00e9 \u010d\u00e1sti vykazuj\u00ed zn\u00e1mky opot\u0159eben\u00ed, m\u016f\u017ee b\u00fdt st\u00e1le uvedeno do provozu, pokud opot\u0159eben\u00ed neovlivn\u00ed jeho p\u0159\u00edmou aplika\u010dn\u00ed v\u00fdkonnost.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"manual-inspection\">Ru\u010dn\u00ed kontrola<\/h3>\n\n\n\n<p>Kdy\u017e se nosn\u00e1 ocelov\u00e1 lana je\u0159\u00e1bu pou\u017e\u00edvaj\u00ed ve skute\u010dn\u00fdch prost\u0159ed\u00edch a podm\u00ednk\u00e1ch, jejich vn\u011bj\u0161\u00ed povrchy p\u0159ich\u00e1zej\u00ed do kontaktu a t\u0159en\u00ed s povrchy, jako jsou dr\u00e1\u017eky kladek a vn\u011bj\u0161\u00ed povrch bubnu, co\u017e vede k vn\u011bj\u0161\u00edmu opot\u0159eben\u00ed. Toto opot\u0159eben\u00ed zp\u016fsobuje zten\u010den\u00ed a smr\u0161t\u011bn\u00ed pr\u016fm\u011bru lana a m\u016f\u017ee tak\u00e9 v\u00e9st k tomu, \u017ee se vn\u011bj\u0161\u00ed dr\u00e1ty stanou hladk\u00fdmi, p\u0159eru\u0161\u00ed se nebo dokonce zp\u016fsob\u00ed praskliny pramene. Tyto probl\u00e9my sni\u017euj\u00ed plochu pr\u016f\u0159ezu nosn\u00e9ho ocelov\u00e9ho lana, \u010d\u00edm\u017e ovliv\u0148uj\u00ed jeho pevnost v tahu. Ka\u017edodenn\u00ed manu\u00e1ln\u00ed kontroly zahrnuj\u00ed p\u0159edev\u0161\u00edm vizu\u00e1ln\u00ed pozorov\u00e1n\u00ed a metody m\u011b\u0159en\u00ed posuvn\u00fdm m\u011b\u0159\u00edtkem. N\u00ed\u017ee jsou uvedeny konkr\u00e9tn\u00ed podrobnosti o kontrole:<\/p>\n\n\n\n<ul>\n<li>Kontrola p\u0159etr\u017een\u00e9ho dr\u00e1tu: B\u011bhem provozu je\u0159\u00e1bu je t\u0159eba lana pravideln\u011b vym\u011b\u0148ovat, proto\u017ee p\u0159eru\u0161en\u00e9 dr\u00e1ty jsou p\u0159i pou\u017e\u00edv\u00e1n\u00ed b\u011b\u017en\u00fdm probl\u00e9mem. Oper\u00e1to\u0159i mus\u00ed systematicky analyzovat stav vnit\u0159n\u00edho a vn\u011bj\u0161\u00edho p\u0159eru\u0161en\u00e9ho dr\u00e1tu, aby zajistili p\u0159\u00edsnost procesu kontroly.<\/li>\n\n\n\n<li>Zlomen\u00e9 konce dr\u00e1t\u016f: Siln\u00e9 opot\u0159eben\u00ed konc\u016f dr\u00e1t\u011bn\u00e9ho lana m\u016f\u017ee v\u00e9st k p\u0159etr\u017een\u00ed. Pokud jsou detekov\u00e1ny p\u0159eru\u0161en\u00e9 dr\u00e1ty, znamen\u00e1 to, \u017ee ocelov\u00e9 lano zest\u00e1rlo a je t\u0159eba jej rychle vym\u011bnit.<\/li>\n\n\n\n<li>Rychlost r\u016fstu p\u0159eru\u0161en\u00e9ho dr\u00e1tu: Jak se prodlu\u017euje doba pou\u017e\u00edv\u00e1n\u00ed ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f, po\u010det p\u0159eru\u0161en\u00fdch dr\u00e1t\u016f se hromad\u00ed a interval mezi p\u0159eru\u0161en\u00fdmi dr\u00e1ty se zkracuje. Proto by se doba aplikace ocelov\u00e9ho lana m\u011bla vypo\u010d\u00edtat na z\u00e1klad\u011b stavu p\u0159etr\u017een\u00e9ho dr\u00e1tu.<\/li>\n\n\n\n<li>Sn\u00ed\u017een\u00ed pr\u016fm\u011bru lana: Po\u0161kozen\u00ed j\u00e1dra lana zmen\u0161uje pr\u016fm\u011br ocelov\u00e9ho lana je\u0159\u00e1bu a oslabuje jeho pevnost, co\u017e ovliv\u0148uje rovnov\u00e1hu nap\u011bt\u00ed pramen\u016f ocelov\u00e9ho lana. Stav j\u00e1dra lana je tedy nutn\u00e9 kontrolovat b\u011bhem skute\u010dn\u00e9 pr\u00e1ce a probl\u00e9my by m\u011bly b\u00fdt identifikov\u00e1ny a \u0159e\u0161eny okam\u017eit\u011b.<\/li>\n\n\n\n<li>Vnit\u0159n\u00ed a vn\u011bj\u0161\u00ed opot\u0159eben\u00ed: Pod tlakem zp\u016fsobuje opakovan\u00fd kontakt mezi ocelov\u00fdm lanem je\u0159\u00e1bu a dr\u00e1\u017ekou bubnu nebo dr\u00e1\u017ekou kladky vn\u011bj\u0161\u00ed opot\u0159eben\u00ed, sni\u017euje pevnost ocelov\u00e9ho lana a zmen\u0161uje jeho pr\u016f\u0159ez a pr\u016fm\u011br. K vy\u0159e\u0161en\u00ed tohoto probl\u00e9mu mus\u00ed obsluha vym\u011bnit ocelov\u00e9 lano za nov\u00e9 v dobr\u00e9m stavu.<\/li>\n\n\n\n<li>Koroze: Je\u0159\u00e1by prim\u00e1rn\u011b funguj\u00ed ve vn\u011bj\u0161\u00edm prost\u0159ed\u00ed. Pokud je maz\u00e1n\u00ed ocelov\u00e9ho lana \u0161patn\u00e9 nebo pracuje ve vysok\u00fdch teplot\u00e1ch a vlhk\u00fdch podm\u00ednk\u00e1ch, m\u016f\u017ee doj\u00edt ke korozi. Po zji\u0161t\u011bn\u00ed takov\u00fdch probl\u00e9m\u016f mus\u00ed oper\u00e1to\u0159i lano namazat.<\/li>\n\n\n\n<li>Deformace: P\u0159i p\u016fsoben\u00ed vn\u011bj\u0161\u00edch sil se ocelov\u00e1 lana mostov\u00e9ho je\u0159\u00e1bu mohou n\u00e1hle p\u0159etrhnout. V takov\u00fdch p\u0159\u00edpadech mus\u00ed obsluha okam\u017eit\u011b vym\u011bnit ocelov\u00e9 lano.<\/li>\n\n\n\n<li>Kontrola spojovac\u00edch armatur: P\u0159i spojov\u00e1n\u00ed konc\u016f ocelov\u00fdch lan mus\u00ed obsluha kontrolovat pevnost r\u016fzn\u00fdch spojovac\u00edch za\u0159\u00edzen\u00ed. Prost\u0159ednictv\u00edm ru\u010dn\u00ed kontroly by m\u011bli optimalizovat a vym\u011bnit ocelov\u00e1 lana na z\u00e1klad\u011b jejich skute\u010dn\u00e9ho stavu.<\/li>\n<\/ul>\n\n\n\n<p>Aby se omezil dohled p\u0159i kontrol\u00e1ch ocelov\u00fdch lan je\u0159\u00e1b\u016f, m\u011bli by oper\u00e1to\u0159i prov\u00e1d\u011bt kontroly v d\u00e1vk\u00e1ch. To zaji\u0161\u0165uje d\u016fkladnou implementaci podrobnost\u00ed o kontrole a zachov\u00e1n\u00ed celkov\u00e9 kvality pr\u00e1ce. Aby byla zaru\u010dena \u00fa\u010dinnost ru\u010dn\u00edch kontrol, mus\u00ed b\u00fdt zaveden proces p\u0159ezkoum\u00e1n\u00ed. V\u0161echna ocelov\u00e1 lana mostov\u00fdch je\u0159\u00e1b\u016f by m\u011bla proj\u00edt alespo\u0148 dv\u011bma koly kontroly, aby se p\u0159ede\u0161lo probl\u00e9m\u016fm, kter\u00e9 by mohly ovlivnit skute\u010dn\u00fd pracovn\u00ed v\u00fdkon.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"instrument-inspection\">Kontrola p\u0159\u00edstroje<\/h3>\n\n\n\n<p>P\u0159i p\u0159\u00edstrojov\u00e9 inspekci ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f lze vyu\u017e\u00edt defektoskopy vyu\u017e\u00edvaj\u00edc\u00ed p\u0159edev\u0161\u00edm metodu \u00faniku magnetick\u00e9ho toku (MFL) k detekci vad p\u0159etr\u017een\u00e9ho dr\u00e1tu v ocelov\u00fdch lanech je\u0159\u00e1b\u016f. Ve f\u00e1zi skute\u010dn\u00e9ho provozu mus\u00ed oper\u00e1to\u0159i axi\u00e1ln\u011b magnetizovat ocelov\u00e9 lano pomoc\u00ed magnetick\u00e9ho pole a prov\u00e1d\u011bt nedestruktivn\u00ed testov\u00e1n\u00ed pomoc\u00ed magneticky citliv\u00fdch detek\u010dn\u00edch za\u0159\u00edzen\u00ed. A kone\u010dn\u011b, anal\u00fdzou sign\u00e1l\u016f \u00faniku magnetick\u00e9ho toku lze ur\u010dit, zda dr\u00e1t\u011bn\u00e9 lano je\u0159\u00e1bu nem\u00e1 probl\u00e9my s dr\u00e1tem. Krom\u011b toho lze defekty detekovat na z\u00e1klad\u011b magnetick\u00e9 permeability lana je\u0159\u00e1bu. Oper\u00e1to\u0159i mus\u00ed pou\u017e\u00edvat vyv\u00e1\u017een\u00e9 sn\u00edma\u010de magnetick\u00e9ho obvodu k m\u011b\u0159en\u00ed magnetick\u00e9ho toku ocelov\u00e9ho lana a ur\u010dov\u00e1n\u00ed zm\u011bn v plo\u0161e pr\u016f\u0159ezu ocelov\u00e9ho lana na z\u00e1klad\u011b sign\u00e1l\u016f.<\/p>\n\n\n\n<p>Pro maximalizaci \u00fa\u010dinnosti defektoskopu by m\u011bly b\u00fdt senzory instalov\u00e1ny v bl\u00edzkosti pevn\u00e9 kladky a bubnu je\u0159\u00e1bu. Anal\u00fdzou a ulo\u017een\u00edm poruchov\u00fdch sign\u00e1l\u016f z ocelov\u00e9ho lana lze prov\u00e9st simulaci sign\u00e1lu a po\u010d\u00edta\u010dov\u00fd monitor lze pou\u017e\u00edt k z\u00edsk\u00e1n\u00ed informac\u00ed, jako je poloha, d\u00e9lka a po\u010det p\u0159eru\u0161en\u00fdch dr\u00e1t\u016f v ocelov\u00e9m lan\u011b je\u0159\u00e1bu. Pokud jsou zji\u0161t\u011bny probl\u00e9my, monitor vyd\u00e1 alarm a lze vytisknout specifick\u00e9 parametry kontroly.<\/p>\n\n\n\n<p>Ve srovn\u00e1n\u00ed s manu\u00e1ln\u00edmi metodami kontroly poskytuje kontrola p\u0159\u00edstroj\u016f p\u0159esn\u011bj\u0161\u00ed \u00fadaje a vy\u0161\u0161\u00ed \u00fa\u010dinnost detekce, co\u017e usnad\u0148uje komplexn\u00ed pochopen\u00ed defekt\u016f lan je\u0159\u00e1b\u016f a p\u0159esn\u00e9 ur\u010den\u00ed jejich nosnosti a \u017eivotnosti. Nav\u00edc on-line kontroln\u00ed metody umo\u017e\u0148uj\u00ed oper\u00e1tor\u016fm jasn\u011b porozum\u011bt skute\u010dn\u00e9mu stavu ocelov\u00e9ho lana je\u0159\u00e1bu. Kontrola p\u0159\u00edstroj\u016f m\u00e1 v\u0161ak tak\u00e9 omezen\u00ed. Nem\u016f\u017ee nap\u0159\u00edklad identifikovat probl\u00e9my, jako je koroze nebo oh\u00fdb\u00e1n\u00ed ocelov\u00fdch lan je\u0159\u00e1b\u016f, ani nem\u016f\u017ee systematicky kontrolovat polohu konc\u016f ocelov\u00fdch lan a souvisej\u00edc\u00edch spojovac\u00edch prvk\u016f. Proto mus\u00ed oper\u00e1to\u0159i p\u0159i praktick\u00e9 inspek\u010dn\u00ed pr\u00e1ci zvolit vhodnou metodu inspekce na z\u00e1klad\u011b konkr\u00e9tn\u00edch podm\u00ednek pou\u017eit\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"maintenance-of-overhead-crane-wire-ropes\">\u00dadr\u017eba ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f<\/h2>\n\n\n\n<p>B\u011bhem f\u00e1ze zved\u00e1n\u00ed je\u0159\u00e1bu mohou v\u00fdrazn\u00e9 v\u00fdkyvy v jeho nosnosti zp\u016fsobit r\u016fzn\u00e9 stupn\u011b tahov\u00e9ho nap\u011bt\u00ed mezi ka\u017edou vrstvou ocelov\u00e9ho lana na bubnu. Tato situace \u010dasto vede k probl\u00e9m\u016fm s tlakovou mezerou, co\u017e zp\u016fsobuje, \u017ee vn\u011bj\u0161\u00ed vrstva ocelov\u00e9ho lana nese nadm\u011brn\u00fd tlak, kter\u00fd se pak p\u0159en\u00e1\u0161\u00ed do vrstev pod nimi. Pokud je ocelov\u00e9 lano je\u0159\u00e1bu v prov\u011b\u0161en\u00e9m stavu, m\u016f\u017ee doj\u00edt k m\u00edstn\u00ed deformaci vn\u011bj\u0161\u00ed vrstvy, kter\u00e1 naru\u0161\u00ed uspo\u0159\u00e1d\u00e1n\u00ed ocelov\u00e9ho lana a urychl\u00ed jeho opot\u0159eben\u00ed, \u010d\u00edm\u017e se sn\u00ed\u017e\u00ed jeho \u017eivotnost. Pokud se takov\u00e9 probl\u00e9my vyskytnou, je t\u0159eba p\u0159ijmout n\u00e1sleduj\u00edc\u00ed opat\u0159en\u00ed:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"manual-rope-arrangement\">Ru\u010dn\u00ed uspo\u0159\u00e1d\u00e1n\u00ed lana<\/h3>\n\n\n\n<p>Kdy\u017e nastanou v\u00fd\u0161e uveden\u00e9 probl\u00e9my, mus\u00ed oper\u00e1to\u0159i okam\u017eit\u011b zastavit za\u0159\u00edzen\u00ed a vy\u0159e\u0161it probl\u00e9m pomoc\u00ed ru\u010dn\u00edho uspo\u0159\u00e1d\u00e1n\u00ed lana. A\u010dkoli je tato metoda relativn\u011b neefektivn\u00ed, dok\u00e1\u017ee uvolnit v\u0161echna zamotan\u00e1 ocelov\u00e1 lana, \u010d\u00edm\u017e se zlep\u0161\u00ed a optimalizuje v\u00fdkon ocelov\u00e9ho lana.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"requirements-for-wire-rope-arrangement-on-the-drum\">Po\u017eadavky na uspo\u0159\u00e1d\u00e1n\u00ed dr\u00e1t\u011bn\u00e9ho lana na bubnu<\/h3>\n\n\n\n<p>U\u017eivatelsk\u00e1 jednotka by m\u011bla vym\u011bnit ocelov\u00e9 lano je\u0159\u00e1bu na z\u00e1klad\u011b skute\u010dn\u00e9 v\u00fd\u0161ky zdvihu za\u0159\u00edzen\u00ed. Dr\u00e1t\u011bn\u00e9 lano na <a href=\"https:\/\/www.hndfcrane.com\/cs\/crane-rope-drum\/\">buben<\/a> by m\u011bla b\u00fdt pou\u017e\u00edv\u00e1na efektivn\u011b bez uvoln\u011bn\u00ed p\u0159ebyte\u010dn\u00e9ho lana. Kdy\u017e je zvedac\u00ed n\u00e1stroj v nejni\u017e\u0161\u00ed pracovn\u00ed poloze, ocelov\u00e9 lano navinut\u00e9 na bubnu (krom\u011b c\u00edvek s pevn\u00fdm koncem) by nem\u011blo m\u00edt m\u00e9n\u011b ne\u017e 2 c\u00edvky (u v\u011b\u017eov\u00fdch je\u0159\u00e1b\u016f a mobiln\u00edch je\u0159\u00e1b\u016f ne m\u00e9n\u011b ne\u017e 3 c\u00edvky). U mechanick\u00fdch parkovac\u00edch za\u0159\u00edzen\u00ed, kdy je nosi\u010d nebo automobilov\u00fd z\u00e1sobn\u00edk v nejni\u017e\u0161\u00ed pracovn\u00ed poloze, by ocelov\u00e9 lano navinut\u00e9 na bubnu (krom\u011b c\u00edvek s pevn\u00fdm koncem) nem\u011blo m\u00edt m\u00e9n\u011b ne\u017e 2 c\u00edvky.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"wire-rope-lubrication\">Maz\u00e1n\u00ed ocelov\u00fdch lan<\/h3>\n\n\n\n<p>Maz\u00e1n\u00ed ocelov\u00e9ho lana m\u016f\u017ee zv\u00fd\u0161it jeho v\u00fdkon. B\u011bhem pou\u017e\u00edv\u00e1n\u00ed jsou ocelov\u00e1 lana mostov\u00fdch je\u0159\u00e1b\u016f vystavena jak tahov\u00fdm sil\u00e1m, tak stla\u010den\u00ed kladky, p\u0159i\u010dem\u017e vznik\u00e1 teplo v d\u016fsledku t\u0159en\u00ed. Vy\u010derp\u00e1n\u00ed maziva ocelov\u00e9ho lana m\u016f\u017ee v\u00e9st ke korozi a negativn\u011b ovlivnit jeho kvalitu. Nav\u00edc drsnost povrchu zp\u016fsoben\u00e1 vn\u011bj\u0161\u00edm opot\u0159eben\u00edm m\u016f\u017ee ovlivnit antikorozn\u00ed vlastnosti vnit\u0159n\u00edch ocelov\u00fdch lan, co\u017e m\u016f\u017ee v\u00e9st k p\u0159etr\u017een\u00ed. Oper\u00e1to\u0159i by proto m\u011bli pravideln\u011b \u010distit a mazat ocelov\u00e9 lano je\u0159\u00e1bu, aby byla zaji\u0161t\u011bna jeho \u00fa\u010dinnost maz\u00e1n\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"inspection-and-recording\">Kontrola a z\u00e1znam<\/h3>\n\n\n\n<p>Krom\u011b maz\u00e1n\u00ed je t\u0159eba b\u011bhem pou\u017e\u00edv\u00e1n\u00ed kontrolovat opot\u0159eben\u00ed a stav p\u0159etr\u017een\u00ed dr\u00e1t\u011bn\u00e9ho lana. Pokud jsou zji\u0161t\u011bny n\u011bjak\u00e9 probl\u00e9my, ocelov\u00e9 lano by m\u011blo b\u00fdt okam\u017eit\u011b vym\u011bn\u011bno za nov\u00e9 a m\u011bla by b\u00fdt nahl\u00e1\u0161ena p\u0159\u00edslu\u0161n\u00e1 situace, aby byl zaji\u0161t\u011bn bezpe\u010dn\u00fd provoz za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Z\u00e1v\u011br<\/h2>\n\n\n\n<p>Aby bylo mo\u017en\u00e9 pln\u011b vyu\u017e\u00edt roli ocelov\u00fdch lan mostov\u00fdch je\u0159\u00e1b\u016f, je nezbytn\u00e9 vybrat vhodn\u00fd typ ocelov\u00e9ho lana, p\u0159ijmout v\u011bdeck\u00e9 metody kontroly a zajistit spr\u00e1vn\u00e9 pou\u017eit\u00ed a \u00fadr\u017ebu. Tento p\u0159\u00edstup zaru\u010duje bezpe\u010dn\u00fd provoz je\u0159\u00e1b\u016f a zabra\u0148uje bezpe\u010dnostn\u00edm nehod\u00e1m.<\/p>\n\n\n\n<p>Odkaz: <a href=\"https:\/\/kns.cnki.net\/kcms2\/article\/abstract?v=yTFySdb0ipJq9IlwdubNJfFH1cCmWI7TREGmos3xy3YAP3jZq1aMNTDtoimb0ucrOaOPYqj4N3im4ZNzyd5XaPfCmNSEQvzsUpe0JCw75K8E-w-WjAUf3zJ1xevBNNODt5-gG_L5IgzbPUKaQYR1y0dpu9GniaMmZRHkoB3ZhCo=&amp;uniplatform=NZKPT\" target=\"_blank\" rel=\"noopener\">Metody v\u00fdb\u011bru a kontroly pro je\u0159\u00e1bov\u00e1 lana<\/a><\/p>","protected":false},"excerpt":{"rendered":"V procesu zved\u00e1n\u00ed je\u0159\u00e1bem hraj\u00ed ocelov\u00e1 lana kl\u00ed\u010dovou roli. Proto\u017ee ocelov\u00e1 lana jsou kritick\u00fdmi sou\u010d\u00e1stmi je\u0159\u00e1b\u016f, je nezbytn\u00e9, aby je oper\u00e1to\u0159i spr\u00e1vn\u011b pou\u017e\u00edvali, vybrali spr\u00e1vn\u00fd typ ocelov\u00e9ho lana pro mostov\u00fd je\u0159\u00e1b na z\u00e1klad\u011b pracovn\u00edho prost\u0159ed\u00ed a zvl\u00e1dli spr\u00e1vn\u00e9 metody kontroly. Tento p\u0159\u00edstup efektivn\u011b zvy\u0161uje [\u2026]","protected":false},"featured_media":11027,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[197],"posts_tag":[383,384,382,381],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/11026"}],"collection":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":7,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/11026\/revisions"}],"predecessor-version":[{"id":11034,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/11026\/revisions\/11034"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/media\/11027"}],"wp:attachment":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/media?parent=11026"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/posts_category?post=11026"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/posts_tag?post=11026"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}