{"id":11917,"date":"2026-07-07T07:11:30","date_gmt":"2026-07-07T07:11:30","guid":{"rendered":"https:\/\/www.kscranegroup.com\/?post_type=posts&#038;p=11917"},"modified":"2026-07-07T07:11:35","modified_gmt":"2026-07-07T07:11:35","slug":"overhead-crane-wire-rope-selection","status":"publish","type":"posts","link":"https:\/\/www.kscranegroup.com\/cs\/posts\/overhead-crane-wire-rope-selection\/","title":{"rendered":"V\u00fdb\u011br lana pro mostov\u00e9 je\u0159\u00e1by: Kompletn\u00ed pr\u016fvodce bezpe\u010dn\u00fdm n\u00e1vrhem bubnu a kladky"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Obsah<\/p><nav><ul><li><a href=\"#1-scope\">1. Rozsah p\u016fsobnosti<\/a><\/li><li><a href=\"#2-overhead-crane-wire-rope-minimum-safety-factor-zp\">2. Minim\u00e1ln\u00ed bezpe\u010dnostn\u00ed faktor Zp pro ocelov\u00e1 lana mostov\u00e9ho je\u0159\u00e1bu<\/a><\/li><li><a href=\"#3-overhead-crane-wire-rope-selection\">3. V\u00fdb\u011br lana pro mostov\u00fd je\u0159\u00e1b<\/a><ul><li><a href=\"#3-1-minimum-breaking-force\">3.1 Minim\u00e1ln\u00ed s\u00edla p\u0159i p\u0159etr\u017een\u00ed<\/a><\/li><li><a href=\"#3-2-maximum-fleet-angle\">3.2 Maxim\u00e1ln\u00ed \u00fahel flotily<\/a><\/li><li><a href=\"#3-3-maximum-service-temperature-for-wire-rope\">3.3 Maxim\u00e1ln\u00ed provozn\u00ed teplota pro ocelov\u00e1 lana<\/a><\/li><\/ul><\/li><li><a href=\"#4-overhead-crane-drum-and-sheave-selection\">4. V\u00fdb\u011br bubnu a kladky mostov\u00e9ho je\u0159\u00e1bu<\/a><ul><li><a href=\"#4-1-drum-type-and-winding-direction\">4.1 Typ bubnu a sm\u011br nav\u00edjen\u00ed<\/a><\/li><li><a href=\"#4-2-groove-radius-and-sheave-material\">4.2 Polom\u011br dr\u00e1\u017eky a materi\u00e1l kladky<\/a><\/li><li><a href=\"#4-3-minimum-drum-and-sheave-diameter\">4.3 Minim\u00e1ln\u00ed pr\u016fm\u011br bubnu a kladky<\/a><\/li><\/ul><\/li><li><a href=\"#5-special-operating-conditions\">5. Zvl\u00e1\u0161tn\u00ed provozn\u00ed podm\u00ednky<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Ocelov\u00e9 lano, <a href=\"https:\/\/www.kscranegroup.com\/cs\/crane-parts\/wire-drum.html\/\">bubny<\/a>, a kladky jsou z\u00e1kladn\u00edmi sou\u010d\u00e1stmi ka\u017ed\u00e9ho mostov\u00e9ho je\u0159\u00e1bu nebo zdvihac\u00edho mechanismu. Jak\u00fd minim\u00e1ln\u00ed bezpe\u010dnostn\u00ed sou\u010dinitel byste m\u011bli pou\u017e\u00edt p\u0159i specifikaci t\u011bchto sou\u010d\u00e1st\u00ed? Jak vypo\u010d\u00edt\u00e1te po\u017eadovanou minim\u00e1ln\u00ed mezn\u00ed s\u00edlu? Jak\u00fd pr\u016fm\u011br by m\u011bl m\u00edt buben a kladka?<\/p>\n\n\n\n<p>V\u00fdb\u011br ocelov\u00e9ho lana pro mostov\u00e9 je\u0159\u00e1by vysv\u011btlen dle normy GB\/T 34529-2017 (ISO 16625). Nau\u010dte se, jak vypo\u010d\u00edtat minim\u00e1ln\u00ed mezn\u00ed s\u00edlu, zvolit spr\u00e1vn\u00fd bezpe\u010dnostn\u00ed faktor ocelov\u00e9ho lana, ur\u010dit pr\u016fm\u011bry bubnu a kladkostroje, \u0159\u00eddit \u00fahly naklopen\u00ed lanov\u00e9ho parku, vybrat rozm\u011bry dr\u00e1\u017eky a optimalizovat v\u00fdkon ocelov\u00e9ho lana pro aplikace s mostov\u00fdmi je\u0159\u00e1by a kladkostroji.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1928\" height=\"816\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/1Figure-1-Overhead-crane-european-style-lifting-mechanism.png\" alt=\"\" class=\"wp-image-11907\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/1Figure-1-Overhead-crane-european-style-lifting-mechanism.png 1928w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/1Figure-1-Overhead-crane-european-style-lifting-mechanism-1536x650.png 1536w\" sizes=\"(max-width: 1928px) 100vw, 1928px\" \/><figcaption class=\"wp-element-caption\"><em>Obr\u00e1zek 1 Zvedac\u00ed mechanismus evropsk\u00e9ho typu<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-scope\">1. Rozsah p\u016fsobnosti<\/h2>\n\n\n\n<p>Tato norma plat\u00ed pro n\u00e1sleduj\u00edc\u00ed typy je\u0159\u00e1b\u016f a kladkostroj\u016f (v\u011bt\u0161ina z nich je definov\u00e1na v norm\u011b ISO 4306-1, kter\u00e1 odpov\u00edd\u00e1 norm\u011b GB\/T 6974.1-2008):<\/p>\n\n\n\n<ul>\n<li>Mostov\u00e9 je\u0159\u00e1by (mostov\u00e9 je\u0159\u00e1by)<\/li>\n\n\n\n<li>Lanov\u00e9 kladkostroje<\/li>\n\n\n\n<li>Port\u00e1lov\u00e9 nebo poloport\u00e1lov\u00e9 je\u0159\u00e1by<\/li>\n\n\n\n<li>Port\u00e1lov\u00e9 nebo poloport\u00e1lov\u00e9 je\u0159\u00e1by<\/li>\n\n\n\n<li>Lanov\u00e9 je\u0159\u00e1by a port\u00e1lov\u00e9 lanov\u00e9 je\u0159\u00e1by (pouze zvedac\u00ed mechanismus a mechanismus pojezdu voz\u00edku)<\/li>\n\n\n\n<li>Mobiln\u00ed je\u0159\u00e1by<\/li>\n\n\n\n<li>V\u011b\u017eov\u00e9 je\u0159\u00e1by<\/li>\n\n\n\n<li>\u017delezni\u010dn\u00ed je\u0159\u00e1by<\/li>\n\n\n\n<li>Plovouc\u00ed je\u0159\u00e1by<\/li>\n\n\n\n<li>Palubn\u00ed je\u0159\u00e1by<\/li>\n\n\n\n<li>Derrikov\u00e9 je\u0159\u00e1by a lanov\u00e9 derrikov\u00e9 je\u0159\u00e1by<\/li>\n\n\n\n<li>Pevn\u00e9 v\u00fdztu\u017en\u00e9 je\u0159\u00e1by<\/li>\n\n\n\n<li>Oto\u010dn\u00e9 je\u0159\u00e1by (sloupov\u00e9, v\u00fdlo\u017en\u00edkov\u00e9, n\u00e1st\u011bnn\u00e9 nebo j\u00edzdn\u00ed)<\/li>\n\n\n\n<li>Obecn\u00e9 pob\u0159e\u017en\u00ed je\u0159\u00e1by<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-overhead-crane-wire-rope-minimum-safety-factor-zp\">2. Minim\u00e1ln\u00ed bezpe\u010dnostn\u00ed faktor Zp pro ocelov\u00e1 lana mostov\u00e9ho je\u0159\u00e1bu<\/h2>\n\n\n\n<p>Minim\u00e1ln\u00ed bezpe\u010dnostn\u00ed faktor pro ocelov\u00e9 lano mostov\u00e9ho je\u0159\u00e1bu z\u00e1vis\u00ed na pracovn\u00edm zat\u00ed\u017een\u00ed mechanismu, pou\u017eit\u00ed lana, uspo\u0159\u00e1d\u00e1n\u00ed lanov\u00e1n\u00ed a typu lana.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1832\" height=\"859\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/2Table-1-Minimum-safety-factors-for-overhead-cranes-and-hoists-Source-GBT-34529-2017.png\" alt=\"\" class=\"wp-image-11908\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/2Table-1-Minimum-safety-factors-for-overhead-cranes-and-hoists-Source-GBT-34529-2017.png 1832w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/2Table-1-Minimum-safety-factors-for-overhead-cranes-and-hoists-Source-GBT-34529-2017-1536x720.png 1536w\" sizes=\"(max-width: 1832px) 100vw, 1832px\" \/><figcaption class=\"wp-element-caption\"><em>Tabulka 1 Minim\u00e1ln\u00ed bezpe\u010dnostn\u00ed faktory pro je\u0159\u00e1by (s v\u00fdjimkou mobiln\u00edch je\u0159\u00e1b\u016f) a kladkostroje (Zdroj: GB\/T 34529-2017)<\/em><\/figcaption><\/figure>\n\n\n\n<p>Polo\u017eky 1\u20135 poch\u00e1zej\u00ed z tabulky 44 normy GB\/T 3811-2008; polo\u017eky 6\u20139 poch\u00e1zej\u00ed z norem GB\/T 34529-2017 a GB\/T 8706-2017.<\/p>\n\n\n\n<p><strong>Kl\u00ed\u010dov\u00e9 dopl\u0148uj\u00edc\u00ed pozn\u00e1mky:<\/strong><\/p>\n\n\n\n<ol>\n<li>Pro ocelov\u00e1 lana ur\u010den\u00e1 pro manipulaci s nebezpe\u010dn\u00fdmi b\u0159emeny vyberte bezpe\u010dnostn\u00ed faktor z tabulky uveden\u00e9 na <strong>o jednu pracovn\u00ed \u00farove\u0148 v\u00fd\u0161e<\/strong> ne\u017e konstruk\u010dn\u00ed klasifikace.<\/li>\n\n\n\n<li>Pro metalurgick\u00e9 je\u0159\u00e1by a p\u0159\u00edstavn\u00ed kontejnerov\u00e9 je\u0159\u00e1by s pracovn\u00edmi \u00fakony mechanismu M7 nebo M8, a <strong>m\u00edrn\u011b ni\u017e\u0161\u00ed pracovn\u00ed klasifikace<\/strong> lze pou\u017e\u00edt pro v\u00fdb\u011br ocelov\u00e9ho lana za p\u0159edpokladu, \u017ee lze b\u011bhem provozu sledovat opot\u0159eben\u00ed lana, aby bylo zaji\u0161t\u011bno bezpe\u010dn\u00e9 pou\u017e\u00edv\u00e1n\u00ed a v\u010dasn\u00e1 v\u00fdm\u011bna.<\/li>\n\n\n\n<li><strong>Hutn\u00ed je\u0159\u00e1by<\/strong>minim\u00e1ln\u00ed bezpe\u010dnostn\u00ed faktor nesm\u00ed b\u00fdt men\u0161\u00ed ne\u017e <strong>7.1<\/strong>.<\/li>\n\n\n\n<li><strong>P\u0159\u00edstavn\u00ed kontejnerov\u00e9 je\u0159\u00e1by<\/strong>Minim\u00e1ln\u00ed bezpe\u010dnostn\u00ed sou\u010dinitel pro hlavn\u00ed kladkostrojov\u00e1 lana a ta\u017en\u00e1 lana trolejov\u00e9ho pohonu nesm\u00ed b\u00fdt men\u0161\u00ed ne\u017e <strong>6<\/strong>.<\/li>\n\n\n\n<li>Ocelov\u00e1 lana pro teleskopick\u00e9 v\u00fdlo\u017en\u00edky mus\u00ed m\u00edt bezpe\u010dnostn\u00ed faktor nejm\u00e9n\u011b 4.<\/li>\n\n\n\n<li><strong>Standardn\u00ed ocelov\u00e9 lano<\/strong> \u2014 Souhrnn\u00fd term\u00edn pro \u201ejednovrstv\u00e9 pramenn\u00e9 lano\u201c a \u201eparaleln\u011b uzav\u0159en\u00e9 lano\u201c, ozna\u010dovan\u00e9 tak\u00e9 jako \u201elano neodoln\u00e9 proti ot\u00e1\u010den\u00ed\u201c.<\/li>\n\n\n\n<li><strong>Ocelov\u00e9 lano odoln\u00e9 proti ot\u00e1\u010den\u00ed<\/strong> \u2014 V\u00edcepramenn\u00e9 lano, kter\u00e9 p\u0159i nesen\u00ed z\u00e1t\u011b\u017ee vytv\u00e1\u0159\u00ed sn\u00ed\u017een\u00fd to\u010div\u00fd moment nebo rotaci. Lana odoln\u00e1 proti rotaci se obvykle skl\u00e1daj\u00ed z nejm\u00e9n\u011b dvou vrstev pramen\u016f spir\u00e1lovit\u011b ulo\u017een\u00fdch kolem ocelov\u00e9ho nebo vl\u00e1knit\u00e9ho j\u00e1dra, p\u0159i\u010dem\u017e vn\u011bj\u0161\u00ed prameny jsou ulo\u017eeny v opa\u010dn\u00e9m sm\u011bru ne\u017e sousedn\u00ed vnit\u0159n\u00ed prameny.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1337\" height=\"400\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/3Figure-2-Rotation-resistant-overhead-crane-wire-rope-selection-example.png\" alt=\"\" class=\"wp-image-11943\"\/><figcaption class=\"wp-element-caption\"><em>Obr\u00e1zek 2 P\u0159\u00edklad ocelov\u00e9ho lana odoln\u00e9ho proti ot\u00e1\u010den\u00ed (Zdroj: GB\/T 8706-2017)<\/em><\/figcaption><\/figure>\n\n\n\n<ol>\n<li><strong>Jednovrstv\u00e9 pramenn\u00e9 lano<\/strong> \u2014 V\u00edcepramenn\u00e9 lano sest\u00e1vaj\u00edc\u00ed z jedn\u00e9 vrstvy pramen\u016f spir\u00e1lovit\u011b uspo\u0159\u00e1dan\u00fdch kolem j\u00e1dra.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1337\" height=\"388\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/4Figure-3-Single-layer-multi-strand-rope-example.png\" alt=\"\" class=\"wp-image-11910\"\/><figcaption class=\"wp-element-caption\"><em>Obr\u00e1zek 3 P\u0159\u00edklad jednovrstv\u00e9ho v\u00edcepramenn\u00e9ho lana (Zdroj: GB\/T 8706-2017)<\/em><\/figcaption><\/figure>\n\n\n\n<ol>\n<li><strong>Paraleln\u011b uzav\u0159en\u00e9 lano<\/strong> \u2014 V\u00edcepramenn\u00e9 lano sest\u00e1vaj\u00edc\u00ed ze dvou nebo v\u00edce vrstev pramen\u016f ulo\u017een\u00fdch v jedin\u00e9 operaci kolem pramenn\u00e9ho j\u00e1dra nebo vl\u00e1knit\u00e9ho j\u00e1dra.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1337\" height=\"350\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/5Figure-4-Parallel-closed-rope-example.png\" alt=\"\" class=\"wp-image-11911\"\/><figcaption class=\"wp-element-caption\"><em>Obr\u00e1zek 4 P\u0159\u00edklad paraleln\u011b uzav\u0159en\u00e9ho lana (Zdroj: GB\/T 8706-2017)<\/em><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1766\" height=\"891\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/6Table-2-Minimum-safety-factors-for-mobile-overhead-cranes.png\" alt=\"\" class=\"wp-image-11912\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/6Table-2-Minimum-safety-factors-for-mobile-overhead-cranes.png 1766w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/6Table-2-Minimum-safety-factors-for-mobile-overhead-cranes-1536x775.png 1536w\" sizes=\"(max-width: 1766px) 100vw, 1766px\" \/><figcaption class=\"wp-element-caption\"><em>Tabulka 2 Minim\u00e1ln\u00ed bezpe\u010dnostn\u00ed faktory pro mobiln\u00ed je\u0159\u00e1by (Zdroj: GB\/T 34529-2017)<\/em><\/figcaption><\/figure>\n\n\n\n<p>Mobiln\u00ed je\u0159\u00e1by zahrnuj\u00ed autoje\u0159\u00e1by, kolov\u00e9 je\u0159\u00e1by, p\u00e1sov\u00e9 je\u0159\u00e1by, ter\u00e9nn\u00ed je\u0159\u00e1by a je\u0159\u00e1by montovan\u00e9 na n\u00e1kladn\u00ed automobily (GB\/T 20776-2023).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1393\" height=\"1129\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/7able-3-Minimum-safety-factors-for-static-ropes-and-erection-ropes.png\" alt=\"\" class=\"wp-image-11913\"\/><figcaption class=\"wp-element-caption\"><em>Tabulka 3 Minim\u00e1ln\u00ed bezpe\u010dnostn\u00ed faktory pro statick\u00e1 lana a mont\u00e1\u017en\u00ed lana (Zdroj: GB\/T 34529-2017)<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-overhead-crane-wire-rope-selection\">3. V\u00fdb\u011br lana pro mostov\u00fd je\u0159\u00e1b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-1-minimum-breaking-force\">3.1 Minim\u00e1ln\u00ed s\u00edla p\u0159i p\u0159etr\u017een\u00ed<\/h3>\n\n\n\n<p>Fmin \u2265 S \u00d7 Zp<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Symbol<\/th><th>V\u00fdznam<\/th><\/tr><\/thead><tbody><tr><td>Fmin<\/td><td>Minim\u00e1ln\u00ed s\u00edla p\u0159i p\u0159etr\u017een\u00ed<\/td><\/tr><tr><td>S<\/td><td>Maxim\u00e1ln\u00ed nap\u011bt\u00ed lana<\/td><\/tr><tr><td>Zp<\/td><td>Minim\u00e1ln\u00ed bezpe\u010dnostn\u00ed faktor (viz tabulky 1, 2, 3)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Speci\u00e1ln\u00ed manipulace s je\u0159\u00e1by s drap\u00e1kem:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Stav<\/th><th>Zav\u00edrac\u00ed lano S_cl<\/th><th>Dr\u017e\u00edc\u00ed lano S_hold<\/th><\/tr><\/thead><tbody><tr><td>Automatick\u00e9 vyrovn\u00e1n\u00ed zat\u00ed\u017een\u00ed<\/td><td>Zat\u00ed\u017een\u00e1 hmotnost uchopen\u00ed \u00d7 66% \u00f7 p\u00e1dy uzav\u00edrac\u00edho lana<\/td><td>Zat\u00ed\u017een\u00e1 hmotnost uchopen\u00ed \u00d7 66% \u00f7 p\u00e1dy z\u00e1chytn\u00e9ho lana<\/td><\/tr><tr><td>Zat\u00ed\u017een\u00ed nen\u00ed automaticky vyrovn\u00e1no<\/td><td>Zat\u00ed\u017een\u00e1 hmotnost uchopen\u00ed \u00f7 p\u00e1dy uzav\u00edrac\u00edho lana<\/td><td>Zat\u00ed\u017een\u00e1 hmotnost uchopen\u00ed \u00d7 66% \u00f7 p\u00e1dy z\u00e1chytn\u00e9ho lana<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-2-maximum-fleet-angle\">3.2 Maxim\u00e1ln\u00ed \u00fahel flotily<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Stav<\/th><th>Limit \u00fahlu flotily<\/th><th>Odkaz<\/th><\/tr><\/thead><tbody><tr><td>Lano odoln\u00e9 proti ot\u00e1\u010den\u00ed<\/td><td>\u2264 <strong>2\u00b0<\/strong><\/td><td>GB\/T 34529-2017, \u010dl\u00e1nek B.4<\/td><\/tr><tr><td>Standardn\u00ed ocelov\u00e9 lano<\/td><td>\u2264 <strong>4\u00b0<\/strong><\/td><td>GB\/T 34529-2017, \u010dl\u00e1nek B.4<\/td><\/tr><tr><td>Lano vstupuj\u00edc\u00ed\/vystupuj\u00edc\u00ed z dr\u00e1\u017eky kladky<\/td><td>< <strong>5\u00b0<\/strong><\/td><td>GB\/T 27546-2011, \u010dl\u00e1nek 5.7.2; GB\/T 3811-2008, \u010dl\u00e1nek 6.3.3.3.1<\/td><\/tr><tr><td>Lano vstupuj\u00edc\u00ed\/vystupuj\u00edc\u00ed z dr\u00e1\u017ekovan\u00e9ho bubnu<\/td><td>\u2264 <strong>3,5\u00b0<\/strong><\/td><td>JB\/T 9006-2013, \u010dl\u00e1nek 4.7.2; GB\/T 3811-2008, \u010dl\u00e1nek 6.3.3.3.2<\/td><\/tr><tr><td>Jednoduch\u00fd buben, v\u00edcevrstv\u00fd, bez nav\u00edjec\u00edho za\u0159\u00edzen\u00ed<\/td><td>\u2264 <strong>1,7\u00b0<\/strong><\/td><td>JB\/T 9006-2013, \u010dl\u00e1nek 4.7.3; GB\/T 3811-2008, \u010dl\u00e1nek 6.3.3.3.3<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Pro v\u00edcevrstv\u00e9 nav\u00edjen\u00ed bubn\u016f se doporu\u010duj\u00ed ocelov\u00e1 lana s ocelov\u00fdmi j\u00e1dry.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1512\" height=\"1040\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/8Figure-5-Fleet-angle-and-helix-angle.png\" alt=\"\" class=\"wp-image-11914\"\/><figcaption class=\"wp-element-caption\"><em>Obr\u00e1zek 5 \u00dahel flotily a \u00fahel stoup\u00e1n\u00ed \u0161roubovice<\/em><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Symbol<\/th><th>V\u00fdznam<\/th><th>Omezit<\/th><\/tr><\/thead><tbody><tr><td>\u03b1<\/td><td>\u00dahel \u0161roubovice bubnu<\/td><td>\u2014<\/td><\/tr><tr><td>\u03b2<em>vlevo + \u03b1, \u03b2<\/em>vpravo \u2212 \u03b1<\/td><td>\u00dahel vozov\u00e9ho parku vzhledem k ose dr\u00e1\u017eky bubnu<\/td><td>\u2264 3,5\u00b0 (typicky navr\u017eeno pro max. 3,5\u00b0)<\/td><\/tr><tr><td>\u03b2<em>vlevo, \u03b2<\/em>pr\u00e1vo<\/td><td>\u00dahel vozov\u00e9ho parku vstupuj\u00edc\u00ed\/v\u00fdstupuj\u00edc\u00ed kladky<\/td><td>&lt; 5\u00b0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Opat\u0159en\u00ed ke sn\u00ed\u017een\u00ed \u00fahlu flotily:<\/strong><\/p>\n\n\n\n<ul>\n<li>Zv\u011bt\u0161en\u00edm pr\u016fm\u011bru bubnu se zmen\u0161\u00ed rozsah nav\u00edjen\u00ed<\/li>\n\n\n\n<li>Zv\u011bt\u0161ete vzd\u00e1lenost mezi kladkou a bubnem<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-3-maximum-service-temperature-for-wire-rope\">3.3 Maxim\u00e1ln\u00ed provozn\u00ed teplota pro ocelov\u00e1 lana<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Typ j\u00e1dra<\/th><th>Maxim\u00e1ln\u00ed teplota<\/th><th>Pozn\u00e1mky<\/th><\/tr><\/thead><tbody><tr><td>Vl\u00e1knov\u00e9 j\u00e1dro (FC)<\/td><td><strong>100 \u00b0C<\/strong><\/td><td>\u2014<\/td><\/tr><tr><td>Ocelov\u00e9 j\u00e1dro (IWRC) \/ jednopramenn\u00e9 lano \/ lano s uzam\u010den\u00fdm vinut\u00edm<\/td><td><strong>200 \u00b0C<\/strong><\/td><td>Od 100 \u00b0C do 200 \u00b0C lze p\u0159edpokl\u00e1dat ztr\u00e1tu pevnosti dle normy 10%; nad 100 \u00b0C je vy\u017eadov\u00e1no speci\u00e1ln\u00ed mazivo.<\/td><\/tr><tr><td>Okoln\u00ed teplota <strong>\u221240 \u00b0C<\/strong><\/td><td>S\u00edla nedot\u010dena<\/td><td>Nen\u00ed nutn\u00e9 sni\u017eovat pracovn\u00ed zat\u00ed\u017een\u00ed, ale v\u00fdkon lana m\u016f\u017ee z\u00e1viset na \u00fa\u010dinnosti maziva p\u0159i n\u00edzk\u00fdch teplot\u00e1ch.<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Pokud provozn\u00ed prost\u0159ed\u00ed zakazuje maz\u00e1n\u00ed ocelov\u00fdch lan, doporu\u010duje se konzultace mezi dodavatelem a odb\u011bratelem, v\u010detn\u011b po\u017eadavk\u016f na \u010detnost kontrol.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-overhead-crane-drum-and-sheave-selection\">4. V\u00fdb\u011br bubnu a kladky mostov\u00e9ho je\u0159\u00e1bu<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-1-drum-type-and-winding-direction\">4.1 Typ bubnu a sm\u011br nav\u00edjen\u00ed<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Srovn\u00e1n\u00ed<\/th><th>Oby\u010dejn\u00fd buben<\/th><th>Dr\u00e1\u017ekovan\u00fd buben<\/th><\/tr><\/thead><tbody><tr><td>Doporu\u010den\u00ed<\/td><td>P\u0159ijateln\u00fd<\/td><td><strong>Preferovan\u00e9<\/strong> (jednovrstv\u00e9 vinut\u00ed)<\/td><\/tr><tr><td>V\u00edcevrstv\u00e9 vinut\u00ed<\/td><td>V\u00fd\u0161ka p\u0159\u00edruby nad nejvzd\u00e1len\u011bj\u0161\u00edm lanem \u2265 0,5d<\/td><td>Stejn\u00e9 jako vlevo<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Pravidla pro sm\u011br vinut\u00ed:<\/strong><\/p>\n\n\n\n<ul>\n<li>Hladk\u00fd buben \u2192 Sm\u011br nav\u00edjen\u00ed z\u00e1vis\u00ed na sm\u011bru kladen\u00ed lana; ur\u010dete bod upevn\u011bn\u00ed lana dle tabulky 4.<\/li>\n\n\n\n<li>Dr\u00e1\u017ekovan\u00fd buben \u2192 Lze pou\u017e\u00edt kter\u00fdkoli sm\u011br kladen\u00ed lana, ale <strong>je preferov\u00e1no stejn\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed jako u prost\u00e9ho bubnu<\/strong>Lev\u00e1 spir\u00e1lov\u00e1 dr\u00e1\u017eka odpov\u00edd\u00e1 prav\u00e9mu lanu, prav\u00e1 spir\u00e1lov\u00e1 dr\u00e1\u017eka odpov\u00edd\u00e1 lev\u00e9mu lanu.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1383\" height=\"1137\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/9Table-4-Correct-method-for-determining-the-rope-fixing-point-on-a-drum.png\" alt=\"\" class=\"wp-image-11915\"\/><figcaption class=\"wp-element-caption\"><em>Tabulka 4 Spr\u00e1vn\u00e1 metoda pro ur\u010den\u00ed bodu upevn\u011bn\u00ed lana na bubnu (Zdroj: GB\/T 34529-2017)<\/em><\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-2-groove-radius-and-sheave-material\">4.2 Polom\u011br dr\u00e1\u017eky a materi\u00e1l kladky<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Parametr<\/th><th>Doporu\u010den\u00e1 hodnota<\/th><\/tr><\/thead><tbody><tr><td>Polom\u011br dr\u00e1\u017eky<\/td><td>0,525d\u20130,550d, <strong>optim\u00e1ln\u00ed 0,5375d<\/strong><\/td><\/tr><tr><td>\u00dahel zahrnut\u00fd v kladce<\/td><td>45\u00b0\u201360\u00b0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Pokyny pro v\u00fdb\u011br materi\u00e1lu kladky:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Typ vinut\u00ed<\/th><th>Doporu\u010den\u00fd materi\u00e1l<\/th><th>D\u016fvod<\/th><\/tr><\/thead><tbody><tr><td>V\u00edcevrstv\u00e9<\/td><td>Polymerov\u00e9 kladky nebo dr\u00e1\u017eky s polymerovou v\u00fdstelkou jsou p\u0159ijateln\u00e9<\/td><td>K nejz\u00e1va\u017en\u011bj\u0161\u00edmu po\u0161kozen\u00ed lana doch\u00e1z\u00ed v oblastech k\u0159\u00ed\u017een\u00ed na bubnu.<\/td><\/tr><tr><td>Jednovrstv\u00e9<\/td><td>Polymerov\u00e9 kladky <strong>nedoporu\u010duje se<\/strong><\/td><td>Po\u0161kozen\u00ed je prim\u00e1rn\u011b zp\u016fsobeno \u00fanavou materi\u00e1lu; vnit\u0159n\u00ed \u00fanava lana je u polymerov\u00fdch kladek obt\u00ed\u017en\u011bji detekovateln\u00e1.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Pro \u010dast\u00fd servis: pou\u017eijte <strong>ocelov\u00e9 kladky<\/strong> aby se zv\u00fd\u0161ila pravd\u011bpodobnost vn\u011bj\u0161\u00edho opot\u0159eben\u00ed \u2013 toto opot\u0159eben\u00ed usnad\u0148uje kontrolu lan. Pokud se pou\u017e\u00edvaj\u00ed polymerov\u00e9 kladky, doporu\u010duje se zahrnout alespo\u0148 <strong>jedna ocelov\u00e1 kladka<\/strong> v uspo\u0159\u00e1d\u00e1n\u00ed pro natahov\u00e1n\u00ed, obvykle to nejbl\u00ed\u017ee k bubnu.<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-3-minimum-drum-and-sheave-diameter\">4.3 Minim\u00e1ln\u00ed pr\u016fm\u011br bubnu a kladky<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1105\" height=\"1423\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/10Table-5-Overhead-Crane-Drum-and-sheave-selection-coefficients-and-minimum-diameter-calculation-.png\" alt=\"\" class=\"wp-image-11916\"\/><figcaption class=\"wp-element-caption\"><em>Tabulka 5 Sou\u010dinitele v\u00fdb\u011bru bubnu a kladky a v\u00fdpo\u010det minim\u00e1ln\u00edho pr\u016fm\u011bru (Zdroj: GB\/T 34529-2017)<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-special-operating-conditions\">5. Zvl\u00e1\u0161tn\u00ed provozn\u00ed podm\u00ednky<\/h2>\n\n\n\n<p>Pro manipulaci s roztaven\u00fdm kovem, extr\u00e9mn\u011b n\u00e1ro\u010dn\u00e1 a\/nebo korozivn\u00ed prost\u0159ed\u00ed a podobn\u00e9 speci\u00e1ln\u00ed podm\u00ednky:<\/p>\n\n\n\n<ol>\n<li>Pracovn\u00ed zat\u00ed\u017een\u00ed mechanismu nesm\u00ed b\u00fdt ni\u017e\u0161\u00ed ne\u017e M5<\/li>\n\n\n\n<li>Hodnota Zp se zv\u00fd\u0161\u00ed o 25%, maxim\u00e1ln\u011b v\u0161ak o 9,0.<\/li>\n<\/ol>\n\n\n\n<p>P\u016fvodn\u00ed dokument se tak\u00e9 zab\u00fdv\u00e1 pou\u017eit\u00edm oto\u010dn\u00fdch kloub\u016f a oto\u010dn\u00fdch spoj\u016f, p\u0159\u00ed\u010dinami opot\u0159eben\u00ed ocelov\u00fdch lan, prodlou\u017een\u00edm a v\u00fdb\u011brem lana a v\u00fdb\u011brem zakon\u010den\u00ed lana. Dal\u0161\u00ed informace naleznete v p\u016fvodn\u00ed norm\u011b.<\/p>\n\n\n\n<p><strong>Referen\u010dn\u00ed standardy<strong>(<a href=\"https:\/\/openstd.samr.gov.cn\/bzgk\/std\/std_list?p.p1=0&amp;p.p90=circulation_date&amp;p.p91=desc&amp;p.p2=%E8%B5%B7%E9%87%8D%E6%9C%BA\" target=\"_blank\" rel=\"noopener\">Dotaz na \u010d\u00ednsk\u00e9 normy pro je\u0159\u00e1by<\/a>)<\/strong>:<\/strong><\/p>\n\n\n\n<ul>\n<li>GB\/T 34529-2017 Je\u0159\u00e1by a kladkostroje \u2013 V\u00fdb\u011br ocelov\u00fdch lan, bubn\u016f a kladkostroj\u016f (IDT ISO 16625:2013)<\/li>\n\n\n\n<li>GB\/T 20118-2017 Ocelov\u00e1 lana pro v\u0161eobecn\u00e9 pou\u017eit\u00ed (NEQ ISO 2408:2017)<\/li>\n\n\n\n<li>GB\/T 20863.1-2021 Je\u0159\u00e1by \u2013 Klasifikace \u2013 \u010c\u00e1st 1: V\u0161eobecn\u011b (IDT ISO 4301-1:2016)<\/li>\n\n\n\n<li>GB\/T 6974.1-2008 Je\u0159\u00e1by \u2013 Terminologie \u2013 \u010c\u00e1st 1: V\u0161eobecn\u011b (IDT ISO 4306-1:2007)<\/li>\n\n\n\n<li>GB\/T 5972-2023 Je\u0159\u00e1by \u2013 Ocelov\u00e1 lana \u2013 P\u00e9\u010de a \u00fadr\u017eba, kontrola a likvidace (IDT ISO 4309:2017)<\/li>\n\n\n\n<li>GB\/T 8706-2017 Ocelov\u00e1 lana \u2013 Terminologie, ozna\u010dov\u00e1n\u00ed a klasifikace (MOD ISO 17893:2004)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"Wire rope, drums, and sheaves are the core components of any overhead crane or hoist lifting mechanism. When specifying these components, what minimum safety factor should you use? How do you calculat","protected":false},"featured_media":11527,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[189],"posts_tag":[826,801,825,822,823,121,829,828,818,827,824],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts\/11917"}],"collection":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":3,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts\/11917\/revisions"}],"predecessor-version":[{"id":11944,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts\/11917\/revisions\/11944"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/media\/11527"}],"wp:attachment":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/media?parent=11917"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/posts_category?post=11917"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/posts_tag?post=11917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}