{"id":17323,"date":"2026-09-01T09:47:11","date_gmt":"2026-09-01T09:47:11","guid":{"rendered":"https:\/\/www.dgcrane.com\/?post_type=posts&#038;p=17323"},"modified":"2026-09-01T09:47:14","modified_gmt":"2026-09-01T09:47:14","slug":"casting-crane-fatigue-prevention","status":"publish","type":"posts","link":"https:\/\/www.dgcrane.com\/cs\/posts\/casting-crane-fatigue-prevention\/","title":{"rendered":"Prevence \u00fanavy odl\u00e9vac\u00edho je\u0159\u00e1bu: Hlavn\u00ed konstruk\u010dn\u00ed komponenty"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Obsah<\/h2><nav><ul><li><a href=\"#causes-of-fatigue-failure-in-main-structural-components\">P\u0159\u00ed\u010diny \u00fanavov\u00e9ho selh\u00e1n\u00ed hlavn\u00edch konstruk\u010dn\u00edch prvk\u016f<\/a><\/li><li><a href=\"#prevention-and-control-of-fatigue-failure-in-main-structural-components\">Prevence a kontrola \u00fanavov\u00e9ho selh\u00e1n\u00ed hlavn\u00edch konstruk\u010dn\u00edch prvk\u016f<\/a><ul><li><a href=\"#rational-design-of-main-structural-components\">Racion\u00e1ln\u00ed n\u00e1vrh hlavn\u00edch konstruk\u010dn\u00edch prvk\u016f<\/a><\/li><li><a href=\"#appropriate-weld-selection-and-welding-quality\">Vhodn\u00fd v\u00fdb\u011br svaru a kvalita sva\u0159ov\u00e1n\u00ed<\/a><\/li><li><a href=\"#appropriate-material-selection-for-main-structural-components\">Vhodn\u00fd v\u00fdb\u011br materi\u00e1lu pro hlavn\u00ed konstruk\u010dn\u00ed prvky<\/a><\/li><\/ul><\/li><li><a href=\"#safe-operating-conditions-of-casting-crane\">Bezpe\u010dn\u00e9 provozn\u00ed podm\u00ednky lic\u00edho je\u0159\u00e1bu<\/a><\/li><li><a href=\"#frequent-or-intensive-casting-crane-use\">\u010cast\u00e9 nebo intenzivn\u00ed pou\u017e\u00edv\u00e1n\u00ed lic\u00edho je\u0159\u00e1bu<\/a><\/li><li><a href=\"#key-considerations-for-casting-crane-designers\">Kl\u00ed\u010dov\u00e9 aspekty pro konstrukt\u00e9ry je\u0159\u00e1b\u016f pro odl\u00e9v\u00e1n\u00ed<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Prevence \u00fanavy materi\u00e1lu u sl\u00e9v\u00e1rensk\u00fdch je\u0159\u00e1b\u016f je nezbytn\u00e1 u metalurgick\u00fdch v\u00fdrobn\u00edch linek pro taven\u00ed, v\u00e1lcov\u00e1n\u00ed, kov\u00e1n\u00ed, zav\u00e1\u017een\u00ed pec\u00ed a dal\u0161\u00ed procesy tv\u00e1\u0159en\u00ed za tepla. S neust\u00e1l\u00fdm zav\u00e1d\u011bn\u00edm modern\u00edch technologi\u00ed a za\u0159\u00edzen\u00ed pro taven\u00ed se kladou vy\u0161\u0161\u00ed po\u017eadavky na rychlosti zved\u00e1n\u00ed a j\u00edzdy a pracovn\u00ed \u00farovn\u011b sl\u00e9v\u00e1rensk\u00fdch je\u0159\u00e1b\u016f. S rostouc\u00ed celkovou t\u0159\u00eddou zat\u00ed\u017een\u00ed je\u0159\u00e1bu se st\u00e1v\u00e1 prevence \u00fanavov\u00e9ho selh\u00e1n\u00ed v hlavn\u00edch konstruk\u010dn\u00edch prvc\u00edch kl\u00ed\u010dovou pro bezpe\u010dn\u00fd a spolehliv\u00fd provoz.<\/p>\n\n\n\n<p>Selh\u00e1n\u00ed odl\u00e9vac\u00edch je\u0159\u00e1b\u016f zp\u016fsoben\u00e1 konstruk\u010dn\u00edmi nebo v\u00fdrobn\u00edmi vadami m\u016f\u017ee sn\u00ed\u017eit efektivitu a v\u00fdkon v\u00fdroby, odstavit celou v\u00fdrobn\u00ed linku nebo v z\u00e1va\u017en\u00fdch p\u0159\u00edpadech po\u0161kodit pozemn\u00ed za\u0159\u00edzen\u00ed a zp\u016fsobit v\u00e1\u017en\u00e1 zran\u011bn\u00ed nebo \u00famrt\u00ed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"842\" height=\"430\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/08\/casting-crane-2.png\" alt=\"\" class=\"wp-image-17328\" style=\"width:838px;height:auto\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"causes-of-fatigue-failure-in-main-structural-components\">P\u0159\u00ed\u010diny \u00fanavov\u00e9ho selh\u00e1n\u00ed hlavn\u00edch konstruk\u010dn\u00edch prvk\u016f<\/h2>\n\n\n\n<p>Opakovan\u00e9 st\u0159\u00eddav\u00e9 nam\u00e1h\u00e1n\u00ed m\u016f\u017ee po ur\u010dit\u00e9m po\u010dtu cykl\u016f iniciovat trhlinu p\u0159i ur\u010dit\u00e9 koncentraci nap\u011bt\u00ed. Za vhodn\u00fdch podm\u00ednek se trhlina \u0161\u00ed\u0159\u00ed a nakonec zp\u016fsob\u00ed n\u00e1hl\u00fd lom. Tento proces se naz\u00fdv\u00e1 \u00fanavov\u00e9 poru\u0161en\u00ed a po\u010det cykl\u016f nap\u011bt\u00ed p\u0159ed poru\u0161en\u00edm se naz\u00fdv\u00e1 \u00fanavov\u00e1 \u017eivotnost.<\/p>\n\n\n\n<p>V\u0161echny konstruk\u010dn\u00ed komponenty mechanick\u00fdch za\u0159\u00edzen\u00ed mohou trp\u011bt \u00fanavov\u00fdm selh\u00e1n\u00edm. Statistiky ukazuj\u00ed, \u017ee \u00fanava kovu zp\u016fsobuje v\u00edce ne\u017e 801 TP1T lomov\u00fdch nehod ve stroj\u00edrenstv\u00ed. Hlavn\u00ed konstruk\u010dn\u00ed komponenty hutn\u00edho sl\u00e9v\u00e1rensk\u00e9ho je\u0159\u00e1bu nesou prom\u011bnn\u00e9 cyklick\u00e9 nebo n\u00e1hodn\u00e9 zat\u00ed\u017een\u00ed, tak\u017ee \u00fanava je jejich prim\u00e1rn\u00edm zp\u016fsobem selh\u00e1n\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"prevention-and-control-of-fatigue-failure-in-main-structural-components\">Prevence a kontrola \u00fanavov\u00e9ho selh\u00e1n\u00ed hlavn\u00edch konstruk\u010dn\u00edch prvk\u016f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"rational-design-of-main-structural-components\">Racion\u00e1ln\u00ed n\u00e1vrh hlavn\u00edch konstruk\u010dn\u00edch prvk\u016f<\/h3>\n\n\n\n<p>a. Vyberte vhodn\u00e9 pr\u016f\u0159ezy pro hlavn\u00ed konstruk\u010dn\u00ed prvky podle t\u0159\u00eddy zat\u00ed\u017een\u00ed je\u0159\u00e1bu uveden\u00e9 ve smlouv\u011b, aby byly spln\u011bny po\u017eadavky na pevnost a tuhost. Je\u0159\u00e1by s t\u0159\u00eddou pevnosti A6 nebo vy\u0161\u0161\u00ed vy\u017eaduj\u00ed kontrolu \u00fanavov\u00e9 pevnosti.<\/p>\n\n\n\n<p>b. Dr\u00e1hy zat\u00ed\u017een\u00ed v nosn\u00fdch prvc\u00edch by m\u011bly b\u00fdt jednoduch\u00e9, jasn\u00e9 a spojit\u00e9.<\/p>\n\n\n\n<p>c. Vyhn\u011bte se n\u00e1hl\u00fdm zm\u011bn\u00e1m pr\u016f\u0159ezu ve vysoce nam\u00e1han\u00fdch oblastech, proto\u017ee mohou v\u00e9st k \u00fanavov\u00e9mu poru\u0161en\u00ed.<\/p>\n\n\n\n<p>d. Navrhovat mechanismy a konstruk\u010dn\u00ed prvky tak, aby se v p\u0159\u00edpad\u011b pot\u0159eby zabr\u00e1nilo staticky neur\u010dit\u00fdm konstrukc\u00edm, s prioritou pro staticky ur\u010dit\u00e9 n\u00e1vrhy.<\/p>\n\n\n\n<p>e. V\u011bnujte zvl\u00e1\u0161tn\u00ed pozornost spoj\u016fm tlust\u00fdch a tenk\u00fdch plech\u016f, koncov\u00fdm \u00fasek\u016fm hlavn\u00edch nosn\u00edk\u016f, rozvr\u017een\u00ed p\u0159\u00edstupov\u00fdch otvor\u016f a polom\u011bru zaoblen\u00ed (R) oh\u00fdban\u00fdch plech\u016f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"appropriate-weld-selection-and-welding-quality\">Vhodn\u00fd v\u00fdb\u011br svaru a kvalita sva\u0159ov\u00e1n\u00ed<\/h3>\n\n\n\n<p>a. Typy svar\u016f mus\u00ed spl\u0148ovat platn\u00e9 normy. N\u00e1vrh by m\u011bl pe\u010dliv\u011b zohlednit tup\u00e9 spoje plech\u016f, v\u010detn\u011b spoj\u016f tlust\u00fdch plech\u016f s tenk\u00fdmi tlou\u0161\u0165kami, dr\u00e1\u017ekov\u00fdch tvar\u016f u tlust\u00fdch plech\u016f, obvodov\u00fdch a pod\u00e9ln\u00fdch bubnov\u00fdch spoj\u016f a symboly svar\u016f ve spoj\u00edch.<\/p>\n\n\n\n<p>b. \u00danavov\u00e9 vlastnosti \u00fazce souvis\u00ed s typem a kvalitou svaru. Svary mus\u00ed spl\u0148ovat p\u0159\u00edslu\u0161n\u00e9 normy, proto\u017ee mnoho struktur\u00e1ln\u00edch \u00fanavov\u00fdch poruch vznik\u00e1 pr\u00e1v\u011b ve svarov\u00fdch spoj\u00edch.<\/p>\n\n\n\n<p>c. Sva\u0159ovac\u00ed elektrody, dr\u00e1t a tavidlo mus\u00ed b\u00fdt kompatibiln\u00ed se spojovan\u00fdmi materi\u00e1ly.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"appropriate-material-selection-for-main-structural-components\">Vhodn\u00fd v\u00fdb\u011br materi\u00e1lu pro hlavn\u00ed konstruk\u010dn\u00ed prvky<\/h3>\n\n\n\n<p>a. Z\u00e1kladn\u00ed materi\u00e1ly pro hlavn\u00ed konstruk\u010dn\u00ed prvky mus\u00ed spl\u0148ovat platn\u00e9 normy a m\u00edt platn\u00e9 certifik\u00e1ty materi\u00e1l\u016f.<\/p>\n\n\n\n<p>b. U krabicov\u00e9ho nosn\u00edku mimo kolejnice by horn\u00ed \u010d\u00e1st hlavn\u00ed stojiny m\u011bla b\u00fdt vyrobena z oceli T-profilu. Jej\u00ed tlakov\u00e1 \u00fanosnost mus\u00ed spl\u0148ovat m\u00edstn\u00ed po\u017eadavky na tlakov\u00e9 nap\u011bt\u00ed v bod\u011b 5.4.1.2 konstruk\u010dn\u00ed normy (podle GB\/T 3811). Pokud ocel T-profilu nen\u00ed k dispozici, spojte hlavn\u00ed stojinu s tla\u010denou p\u0159\u00edrubou pln\u011b prova\u0159en\u00fdmi, oboustrann\u00fdmi souvisl\u00fdmi svary s dr\u00e1\u017ekou K.<\/p>\n\n\n\n<p>c. D\u016fle\u017eit\u00e9 komponenty pro p\u0159enos zat\u00ed\u017een\u00ed by m\u011bly b\u00fdt \u0159ez\u00e1ny tak, aby sm\u011br jejich prim\u00e1rn\u00ed s\u00edly sledoval sm\u011br v\u00e1lcov\u00e1n\u00ed plechu.<\/p>\n\n\n\n<p>e. Zvolte polom\u011br ohybu desky R tak, aby byla zachov\u00e1na hladk\u00e1 dr\u00e1ha zat\u00ed\u017een\u00ed a zabr\u00e1nilo se n\u00e1hl\u00fdm zm\u011bn\u00e1m v toku nap\u011bt\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"safe-operating-conditions-of-casting-crane\">Bezpe\u010dn\u00e9 provozn\u00ed podm\u00ednky lic\u00edho je\u0159\u00e1bu <\/h2>\n\n\n\n<p>Bezpe\u010dn\u00fd provoz lic\u00edho je\u0159\u00e1bu z\u00e1vis\u00ed na konstrukci, kvalit\u011b v\u00fdroby, provozn\u00edch postupech, \u00fadr\u017eb\u011b a skute\u010dn\u00fdch pracovn\u00edch podm\u00ednk\u00e1ch.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/08\/safety-regulation-of-casting-crane_english.png\" alt=\"\" class=\"wp-image-17325\"><\/figure>\n\n\n\n<p>Krom\u011b toho obsluhujte lic\u00ed je\u0159\u00e1b v souladu s n\u00e1rodn\u00edmi p\u0159edpisy a smlouvou, dodr\u017eujte spr\u00e1vn\u00e9 postupy a prov\u00e1d\u011bjte pravidelnou \u00fadr\u017ebu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"frequent-or-intensive-casting-crane-use\">\u010cast\u00e9 nebo intenzivn\u00ed pou\u017e\u00edv\u00e1n\u00ed lic\u00edho je\u0159\u00e1bu<\/h2>\n\n\n\n<p>T\u0159\u00edda provozu lic\u00edho je\u0159\u00e1bu \u00fazce souvis\u00ed s provozn\u00ed frekvenc\u00ed a podm\u00ednkami zat\u00ed\u017een\u00ed. Dlouhodob\u00fd provoz s vysokou frekvenc\u00ed p\u0159i vysok\u00e9m zat\u00ed\u017een\u00ed m\u016f\u017ee po\u0161kodit konstrukci a mechanismy, co\u017e zp\u016fsob\u00ed, \u017ee je\u0159\u00e1b dos\u00e1hne sv\u00e9 projektovan\u00e9 \u017eivotnosti d\u0159\u00edve, ne\u017e se o\u010dek\u00e1valo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"key-considerations-for-casting-crane-designers\">Kl\u00ed\u010dov\u00e9 aspekty pro konstrukt\u00e9ry je\u0159\u00e1b\u016f pro odl\u00e9v\u00e1n\u00ed<\/h2>\n\n\n\n<p>B\u011bhem p\u0159\u00edpravy smlouvy a technick\u00fdch diskus\u00ed by u\u017eivatel\u00e9 m\u011bli poskytnout skute\u010dn\u00e9 provozn\u00ed podm\u00ednky, provozn\u00ed frekvenci a proces taven\u00ed sl\u00e9v\u00e1rensk\u00e9ho je\u0159\u00e1bu. Konstrukt\u00e9\u0159i pak mohou doporu\u010dit vhodnou kombinaci t\u0159\u00eddy zat\u00ed\u017een\u00ed nebo ji specifikovat ve smlouv\u011b v souladu s normou GB\/T 3811.<\/p>","protected":false},"excerpt":{"rendered":"Prevence \u00fanavy materi\u00e1lu u sl\u00e9v\u00e1rensk\u00fdch je\u0159\u00e1b\u016f je nezbytn\u00e1 na metalurgick\u00fdch v\u00fdrobn\u00edch link\u00e1ch pro taven\u00ed, v\u00e1lcov\u00e1n\u00ed, kov\u00e1n\u00ed, zav\u00e1\u017een\u00ed pec\u00ed a dal\u0161\u00ed procesy tv\u00e1\u0159en\u00ed za tepla. S neust\u00e1l\u00fdm zav\u00e1d\u011bn\u00edm modern\u00edch technologi\u00ed a za\u0159\u00edzen\u00ed pro taven\u00ed se kladou vy\u0161\u0161\u00ed po\u017eadavky na rychlosti zved\u00e1n\u00ed a j\u00edzdy a pracovn\u00ed \u00farovn\u011b sl\u00e9v\u00e1rensk\u00fdch je\u0159\u00e1b\u016f. S rostouc\u00ed celkovou t\u0159\u00eddou zat\u00ed\u017een\u00ed je\u0159\u00e1bu se p\u0159edch\u00e1z\u00ed [\u2026]","protected":false},"featured_media":17328,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[351],"posts_tag":[1067,206,6],"class_list":["post-17323","posts","type-posts","status-publish","has-post-thumbnail","hentry","posts_category-blog","posts_tag-casting-crane","posts_tag-dgcrane","posts_tag-overhead-crane"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/17323"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":4,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/17323\/revisions"}],"predecessor-version":[{"id":17332,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/17323\/revisions\/17332"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/media\/17328"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/media?parent=17323"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/posts_category?post=17323"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/posts_tag?post=17323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}