{"id":15153,"date":"2025-09-12T00:55:10","date_gmt":"2025-09-12T00:55:10","guid":{"rendered":"https:\/\/www.dgcrane.com\/?post_type=posts&#038;p=15153"},"modified":"2025-09-12T00:55:12","modified_gmt":"2025-09-12T00:55:12","slug":"crane-hook-skewing-causes-and-practical-solutions","status":"publish","type":"posts","link":"https:\/\/www.dgcrane.com\/cs\/posts\/crane-hook-skewing-causes-and-practical-solutions\/","title":{"rendered":"Zkosen\u00ed je\u0159\u00e1bov\u00e9ho h\u00e1ku: P\u0159\u00ed\u010diny a praktick\u00e1 \u0159e\u0161en\u00ed"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Obsah<\/p><nav><ul><li><a href=\"#causes-of-hook-skewing\">P\u0159\u00ed\u010diny zkosen\u00ed h\u00e1ku<\/a><\/li><li><a href=\"#solutions-of-hook-skewing\">\u0158e\u0161en\u00ed zkosen\u00ed h\u00e1ku<\/a><ul><li><a href=\"#dual-drum-or-four-line-single-drum-winding\">Dvoububnov\u00e9 nebo \u010dty\u0159\u0159\u00e1dkov\u00e9 jednobubnov\u00e9 nav\u00edjen\u00ed<\/a><\/li><li><a href=\"#replace-ropes-and-bearings\">Vym\u011b\u0148te lana a lo\u017eiska<\/a><\/li><li><a href=\"#increase-hook-self-weight\">Zv\u00fd\u0161en\u00ed vlastn\u00ed hmotnosti h\u00e1ku<\/a><\/li><\/ul><\/li><li><a href=\"#conclusion\">Z\u00e1v\u011br<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>U velkoton\u00e1\u017en\u00edho je\u0159\u00e1bov\u00e9ho h\u00e1ku s v\u00edce \u00fachyty do\u0161lo k naklon\u011bn\u00ed h\u0159\u00eddele kladky h\u00e1ku, kter\u00e1 b\u011bhem provozu ji\u017e nebyla v horizont\u00e1ln\u00ed rovin\u011b. P\u0159i zved\u00e1n\u00ed nebo spou\u0161t\u011bn\u00ed se h\u00e1k nakl\u00e1n\u011bl nahoru nebo dol\u016f na jednu stranu. Analyzovali jsme p\u0159\u00ed\u010diny a navrhli \u0159e\u0161en\u00ed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"581\" height=\"774\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2025\/09\/Crane-Hook-Skewing.png\" alt=\"\" class=\"wp-image-15154\"><\/figure>\n\n\n\n<p>Na z\u00e1klad\u011b uspo\u0159\u00e1d\u00e1n\u00ed h\u00e1k\u016f zn\u00e1zorn\u011bn\u00e9ho na obr\u00e1zku lze odvodit sch\u00e9ma nav\u00edjen\u00ed takto:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"800\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2025\/09\/winding-diagram.png\" alt=\"\" class=\"wp-image-15155\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"causes-of-hook-skewing\">P\u0159\u00ed\u010diny zkosen\u00ed h\u00e1ku<\/h2>\n\n\n\n<p>V podstat\u011b doch\u00e1z\u00ed k naklon\u011bn\u00ed h\u00e1ku v d\u016fsledku nerovnom\u011brn\u00e9ho napnut\u00ed nebo asynchronn\u00edho pohybu ocelov\u00fdch lan p\u0159es kladky. U h\u00e1k\u016f s v\u00edce \u00fachyty je \u00farove\u0148 naklon\u011bn\u00ed zn\u00e1zorn\u011bn\u00e1 na obr\u00e1zku relativn\u011b b\u011b\u017en\u00fdm jevem.<\/p>\n\n\n\n<p>Kdy\u017e buben nav\u00edj\u00ed nebo uvol\u0148uje lano, vznik\u00e1 t\u0159en\u00ed mezi ocelov\u00fdm lanem, kladkami a lo\u017eisky kladek. V d\u016fsledku toho se ocelov\u00e9 lano nejbl\u00ed\u017ee bubnu pohybuje jako prvn\u00ed, n\u00e1sleduje druh\u00e1 \u0159ada kladek, t\u0159et\u00ed \u0159ada atd. Lano na stran\u011b pevn\u00e9ho bodu se m\u011bn\u00ed jako posledn\u00ed.<\/p>\n\n\n\n<p>S rostouc\u00edm pom\u011brem nav\u00edjen\u00ed se pohyb lana na stran\u011b bubnu st\u00e1v\u00e1 mnohem v\u011bt\u0161\u00edm ne\u017e na stran\u011b pevn\u00e9ho bodu. V t\u00e9to f\u00e1zi se h\u0159\u00eddel kladky h\u00e1ku jev\u00ed jako zkosen\u00e1. Jakmile nav\u00edjen\u00ed nebo odv\u00edjen\u00ed pokra\u010duje a v\u0161echny kladky se ot\u00e1\u010dej\u00ed, nap\u011bt\u00ed lana se m\u00e1 tendenci vyrovn\u00e1vat. V d\u016fsledku vlastn\u00ed t\u00edhy h\u00e1ku a gravitace z\u00e1t\u011b\u017ee se h\u0159\u00eddel kladky m\u00e1 tendenci vracet do vodorovn\u00e9 polohy.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"solutions-of-hook-skewing\">\u0158e\u0161en\u00ed zkosen\u00ed h\u00e1ku<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"dual-drum-or-four-line-single-drum-winding\">Dvoububnov\u00e9 nebo \u010dty\u0159\u0159\u00e1dkov\u00e9 jednobubnov\u00e9 nav\u00edjen\u00ed<\/h3>\n\n\n\n<p>U jednobubnov\u00e9ho dvoulajnov\u00e9ho uspo\u0159\u00e1d\u00e1n\u00ed nav\u00edjen\u00ed se kladky v bl\u00edzkosti pevn\u00e9ho bodu p\u0159i vysok\u00fdch nav\u00edjec\u00edch pom\u011brech zapoj\u00ed pozd\u011bji, co\u017e vytv\u00e1\u0159\u00ed rozd\u00edly v nap\u011bt\u00ed lana. Zru\u0161en\u00edm pevn\u00e9ho bodu a zaji\u0161t\u011bn\u00edm sou\u010dasn\u00e9ho nav\u00edjen\u00ed nebo uvol\u0148ov\u00e1n\u00ed obou lan se h\u0159\u00eddel kladky st\u00e1v\u00e1 stabiln\u011bj\u0161\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replace-ropes-and-bearings\">Vym\u011b\u0148te lana a lo\u017eiska<\/h3>\n\n\n\n<p>Pou\u017e\u00edvejte ocelov\u00e1 lana s lep\u0161\u00ed flexibilitou a lo\u017eiska s ni\u017e\u0161\u00edm t\u0159ec\u00edm odporem a zajist\u011bte \u0159\u00e1dn\u00e9 maz\u00e1n\u00ed lan i lo\u017eisek.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"increase-hook-self-weight\">Zv\u00fd\u0161en\u00ed vlastn\u00ed hmotnosti h\u00e1ku<\/h3>\n\n\n\n<p>T\u011b\u017e\u0161\u00ed h\u00e1k poskytuje v\u011bt\u0161\u00ed stabiliza\u010dn\u00ed moment a sni\u017euje tendenci k nakl\u00e1n\u011bn\u00ed.<\/p>\n\n\n\n<p>Ka\u017ed\u00e1 metoda m\u00e1 sv\u00e9 vlastn\u00ed \u00fa\u010dinky a nev\u00fdhody a m\u016f\u017ee znamenat dodate\u010dn\u00e9 n\u00e1klady. V praxi je m\u00edrn\u00e9 zkosen\u00ed p\u0159irozen\u00fdm jevem a je p\u0159ijateln\u00e9, pokud nen\u00ed ohro\u017eena bezpe\u010dnost.<\/p>\n\n\n\n<p>Pozn\u00e1mka: Pokud lanov\u00fd syst\u00e9m neobsahuje vyva\u017eovac\u00ed tr\u00e1m, jak je zn\u00e1zorn\u011bno na sch\u00e9matu, mohou ob\u011b ocelov\u00e1 lana n\u00e9st nerovnom\u011brn\u00e9 zat\u00ed\u017een\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Z\u00e1v\u011br<\/h2>\n\n\n\n<p>\u0160ikm\u00e9 h\u00e1ky je\u0159\u00e1bu jsou zp\u016fsobeny p\u0159edev\u0161\u00edm nerovnom\u011brn\u00fdm napnut\u00edm lana a asynchronn\u00edm pohybem. Zlep\u0161en\u00edm syst\u00e9mu lanov\u00e1n\u00ed, optimalizac\u00ed v\u00fdb\u011bru sou\u010d\u00e1st\u00ed a zv\u00fd\u0161en\u00edm hmotnosti h\u00e1ku lze jev \u0161ikm\u00e9ho h\u00e1ku \u00fa\u010dinn\u011b zm\u00edrnit. V praktick\u00fdch aplikac\u00edch by m\u011blo b\u00fdt nejvhodn\u011bj\u0161\u00ed \u0159e\u0161en\u00ed zvoleno na z\u00e1klad\u011b stavu za\u0159\u00edzen\u00ed a z\u00e1rove\u0148 by m\u011bl b\u00fdt zaji\u0161t\u011bn bezpe\u010dn\u00fd provoz.<\/p>","protected":false},"excerpt":{"rendered":"U velkoton\u00e1\u017en\u00edho je\u0159\u00e1bov\u00e9ho h\u00e1ku s v\u00edce \u00fachyty do\u0161lo k naklon\u011bn\u00ed h\u0159\u00eddele kladky h\u00e1ku, kter\u00e1 b\u011bhem provozu ji\u017e nebyla v horizont\u00e1ln\u00ed rovin\u011b. P\u0159i zved\u00e1n\u00ed nebo spou\u0161t\u011bn\u00ed se h\u00e1k nakl\u00e1n\u011bl nahoru nebo dol\u016f na jednu stranu. Analyzovali jsme p\u0159\u00ed\u010diny a navrhli \u0159e\u0161en\u00ed. Na z\u00e1klad\u011b uspo\u0159\u00e1d\u00e1n\u00ed h\u00e1ku zn\u00e1zorn\u011bn\u00e9ho na obr\u00e1zku bylo nav\u00edjen\u00ed [\u2026]","protected":false},"featured_media":15156,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[351],"posts_tag":[96,958],"class_list":["post-15153","posts","type-posts","status-publish","has-post-thumbnail","hentry","posts_category-blog","posts_tag-crane-hook","posts_tag-crane-hook-skewing"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/15153"}],"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":2,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/15153\/revisions"}],"predecessor-version":[{"id":15158,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/15153\/revisions\/15158"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/media\/15156"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/media?parent=15153"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/posts_category?post=15153"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/posts_tag?post=15153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}