{"id":945,"date":"2017-08-21T08:09:08","date_gmt":"2017-08-21T08:09:08","guid":{"rendered":"https:\/\/www.kscranegroup.com\/?p=945"},"modified":"2025-12-09T07:37:56","modified_gmt":"2025-12-09T07:37:56","slug":"crane-hook","status":"publish","type":"post","link":"https:\/\/www.kscranegroup.com\/cs\/crane-parts\/crane-hook.html","title":{"rendered":"Je\u0159\u00e1bov\u00fd H\u00e1k"},"content":{"rendered":"<div class=\"content\">\n<div class=\"contentbannar\">[symmen_list]\n<h1>s_title<\/h1>\n[\/symmen_list] [notphone][symmen_model id=1 cat=galerie][\/notphone] [phone][symmen_model id=2 cat=m-galerie][\/phone]\n<\/div>\n<!-- contentbannar -->\n<div class=\"textbox\">\n\nH\u00e1kov\u00e1 skupina je nejb\u011b\u017en\u011bj\u0161\u00edm h\u00e1kov\u00fdm za\u0159\u00edzen\u00edm v je\u0159\u00e1bov\u00e9m mechanismu. H\u00e1k vis\u00ed na ocelov\u00e9m lan\u011b zvedac\u00edho mechanismu pomoc\u00ed kladek takov\u00fdch \u010d\u00e1st\u00ed. H\u00e1k je nejpou\u017e\u00edvan\u011bj\u0161\u00ed mezi za\u0159\u00edzen\u00edmi pro manipulaci s n\u00e1kladem. M\u00e1 takov\u00e9 vlastnosti, jako je jednoduch\u00e1 v\u00fdroba a dobr\u00e1 pou\u017eitelnost.\n<ul>\n \t<li>H\u00e1kov\u00e1 skupina je nejb\u011b\u017en\u011bj\u0161\u00edm h\u00e1kov\u00fdm za\u0159\u00edzen\u00edm v je\u0159\u00e1bov\u00e9m stroji.<\/li>\n \t<li>H\u00e1k vis\u00ed na ocelov\u00e9m lan\u011b zvedac\u00edho mechanismu pomoc\u00ed kladek takov\u00fdch \u010d\u00e1st\u00ed.<\/li>\n \t<li>H\u00e1k je nejpou\u017e\u00edvan\u011bj\u0161\u00ed mezi za\u0159\u00edzen\u00edmi pro manipulaci s n\u00e1kladem. M\u00e1 takov\u00e9 vlastnosti, jako je jednoduch\u00e1 v\u00fdroba a dobr\u00e1 pou\u017eitelnost.<\/li>\n<\/ul>\nJe\u0159\u00e1bov\u00fd h\u00e1k je obvykle vybaven bezpe\u010dnostn\u00ed z\u00e1padkou, aby se zabr\u00e1nilo rozpojen\u00ed zvedac\u00edho dr\u00e1t\u011bn\u00e9ho lana, \u0159et\u011bzu nebo lana, ke kter\u00e9mu je b\u0159emeno p\u0159ipevn\u011bno.\n<h2>R\u016fzn\u00e9 kategorie<\/h2>\n<ul>\n \t<li><strong>Jednoduch\u00fd zvedac\u00ed h\u00e1k:<\/strong> snadno se vyr\u00e1b\u00ed a pou\u017e\u00edv\u00e1, ale jeho nosnost nen\u00ed dobr\u00e1, tak\u017ee se v\u011bt\u0161inou pou\u017e\u00edv\u00e1 pouze na m\u00edst\u011b s n\u00edzkou kapacitou (m\u00e9n\u011b ne\u017e 80 T).<\/li>\n \t<li><strong>Dvojit\u00fd zvedac\u00ed h\u00e1k:<\/strong> pokud je kapacita velk\u00e1, pou\u017eije se dvojit\u00fd h\u00e1k se symetrick\u00fdm p\u0159en\u00e1\u0161en\u00edm n\u00e1kladu, kter\u00fd se podle v\u00fdrobn\u00ed metody rozd\u011bl\u00ed na kovan\u00fd navij\u00e1k a h\u00e1k a navij\u00e1k s popruhem.<\/li>\n \t<li><strong>Kovan\u00fd h\u00e1k navij\u00e1ku:<\/strong> n\u00fdtov\u00e1n\u00ed n\u011bkolika \u0159ez\u00e1n\u00edm tvo\u0159\u00edc\u00ed ocelov\u00fd plech, p\u0159\u00edslu\u0161n\u00fd ocelov\u00fd plech m\u00e1 trhlinu, nezlom\u00ed celkov\u00e9 h\u00e1ky pomoc\u00ed a jeho bezpe\u010dnostn\u00ed prvek je lep\u0161\u00ed, ale jeho vlastn\u00ed hmotnost je velk\u00e1, v\u011bt\u0161inou se pou\u017e\u00edv\u00e1 u velkokapacitn\u00edch nebo zvednut\u00fdch je\u0159\u00e1b\u016f z roztaven\u00e9 oceli.<\/li>\n \t<li><strong>Upnut\u00fd h\u00e1k navij\u00e1ku:<\/strong> pou\u017e\u00edv\u00e1 se na mostov\u00fdch, port\u00e1lov\u00fdch je\u0159\u00e1bech a v\u0161ech typech kladkostroj\u016f.<\/li>\n<\/ul>\nH\u00e1ky mus\u00ed spl\u0148ovat doporu\u010den\u00ed v\u00fdrobce a nesm\u00ed se p\u0159et\u011b\u017eovat. Pou\u017eit\u00ed h\u00e1\u010dku, kter\u00fd nedosahuje specifikac\u00ed doporu\u010den\u00fdch v\u00fdrobcem, sv\u00e1d\u00ed osud. Konkr\u00e9tn\u011b zvy\u0161uje \u0161anci na selh\u00e1n\u00ed za\u0159\u00edzen\u00ed, kter\u00e9 by mohlo v\u00e9st ke zran\u011bn\u00edm a ztr\u00e1t\u011b v\u00fdrobn\u00edho \u010dasu. K selh\u00e1n\u00ed h\u00e1ku m\u016f\u017ee doj\u00edt z mnoha d\u016fvod\u016f, v\u010detn\u011b p\u0159et\u00ed\u017een\u00ed, mechanick\u00e9ho zneu\u017eit\u00ed h\u00e1ku nebo kumulativn\u00ed \u00fanavy. Posouzen\u00ed h\u00e1\u010dk\u016f na\u0161imi techniky v\u00e1m m\u016f\u017ee pomoci ur\u010dit, zda va\u0161e h\u00e1\u010dky spl\u0148uj\u00ed \u00fakoly, kter\u00e9 od nich o\u010dek\u00e1v\u00e1te \u2013 a zda vykazuj\u00ed n\u011bjak\u00e9 zn\u00e1mky potenci\u00e1ln\u00edho selh\u00e1n\u00ed.\n<h2 class=\"title\">Vy\u0159azen\u00fd standard<\/h2>\nZd\u00e1 se, \u017ee p\u0159i lit\u00ed h\u00e1ku je\u0159\u00e1bu o hmotnosti 50 tun 60 tun je t\u0159eba vylou\u010dit jednu z n\u00e1sleduj\u00edc\u00edch okolnost\u00ed:\n<ul>\n \t<li>Crack.<\/li>\n \t<li>Nebezpe\u010dn\u00fd \u00fasek opot\u0159eben\u00ed velikosti p\u016fvodn\u00ed 10%.<\/li>\n \t<li>Je oproti p\u016fvodn\u00ed velikosti zv\u011bt\u0161en o 10%.<\/li>\n \t<li>Torzn\u00ed deformace t\u011bla h\u00e1ku v\u011bt\u0161\u00ed ne\u017e 10\u00b0.<\/li>\n \t<li>Nebezpe\u010dn\u00e1 \u010d\u00e1st h\u00e1ku nebo hrdlo h\u00e1ku zp\u016fsobuj\u00ed plastickou deformaci.<\/li>\n \t<li>Koroze s h\u00e1kov\u00fdm z\u00e1vitem.<\/li>\n<\/ul>\n<\/div>\n [symmen_custom_table id=&quot;1&quot;]\n\n<\/div>","protected":false},"excerpt":{"rendered":"Je\u0159\u00e1bov\u00fd h\u00e1k je jedn\u00edm z nejvhodn\u011bj\u0161\u00edch popruh\u016f pro zved\u00e1n\u00ed. Je spojen s kladkami pro zav\u011b\u0161en\u00ed na lano zvedac\u00edho mechanismu. A je\u0159\u00e1bov\u00fd h\u00e1k je nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00edm zp\u016fsobem p\u0159i zved\u00e1n\u00ed n\u00e1kladu. Vyr\u00e1b\u00ed se snadno a prakticky se ovl\u00e1d\u00e1.","protected":false},"author":2,"featured_media":2663,"parent":499,"comment_status":"open","ping_status":"open","sticky":false,"template":"single-parts.php","format":"standard","meta":{"_acf_changed":false,"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[22],"tags":[325,700],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/posts\/945"}],"collection":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/comments?post=945"}],"version-history":[{"count":7,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/posts\/945\/revisions"}],"predecessor-version":[{"id":5742,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/posts\/945\/revisions\/5742"}],"up":[{"embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/posts\/499"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/media\/2663"}],"wp:attachment":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/media?parent=945"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/categories?post=945"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/tags?post=945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}