{"id":6893,"date":"2025-08-11T18:00:16","date_gmt":"2025-08-11T16:00:16","guid":{"rendered":"https:\/\/glimat.cz\/mistr\/?p=6893"},"modified":"2025-08-06T15:11:08","modified_gmt":"2025-08-06T13:11:08","slug":"lamani-se-vencu-otaceni","status":"publish","type":"post","link":"https:\/\/glimat.cz\/mistr\/prispevky\/lamani-se-vencu-otaceni\/","title":{"rendered":"L\u00e1m\u00e1n\u00ed se v\u011bnc\u016f ot\u00e1\u010den\u00ed"},"content":{"rendered":"\n<div class=\"wp-block-group has-light-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-dark-color has-text-color has-link-color has-medium-font-size wp-elements-3b7c7cdd6e91be1d9990a4c278032292\"><strong>Z tohoto \u010dl\u00e1nku se dozv\u00edte:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li style=\"font-size:16px\"><strong>Hlavn\u00ed p\u0159\u00ed\u010diny prasknut\u00ed a v\u00fdm\u011bny oto\u010dn\u00e9ho krou\u017eku<\/strong><\/li>\n\n\n\n<li style=\"font-size:16px\"><strong>Jak p\u0159edch\u00e1zet po\u0161kozen\u00ed oto\u010dn\u00fdch krou\u017ek\u016f<\/strong><\/li>\n\n\n\n<li style=\"font-size:16px\"><strong>Mont\u00e1\u017e oto\u010dn\u00e9ho krou\u017eku<\/strong><\/li>\n\n\n\n<li style=\"font-size:16px\"><strong><a href=\"https:\/\/glimat.cz\/mistr\/prispevky\/snizeni-opotrebeni-podvozku-cast-3\/\">\u00dadr\u017eba<\/a><\/strong><\/li>\n\n\n\n<li style=\"font-size:16px\"><strong>P\u0159\u00ed\u010diny po\u0161kozen\u00ed oto\u010dn\u00fdch krou\u017ek\u016f a zp\u016fsoby jejich p\u0159edch\u00e1zen\u00ed<\/strong><\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Zadrh\u00e1v\u00e1n\u00ed a l\u00e1m\u00e1n\u00ed zub\u016f p\u0159edstavuj\u00ed hlavn\u00ed probl\u00e9my spojen\u00e9 s oto\u010dn\u00fdmi krou\u017eky: aby se prodlou\u017eila jejich \u017eivotnost, doporu\u010duje se dodr\u017eovat ur\u010dit\u00e1 pravidla p\u0159i jejich n\u00e1vrhu, p\u0159eprav\u011b, mont\u00e1\u017ei a \u00fadr\u017eb\u011b.<\/p>\n\n\n\n<p>Oto\u010dn\u00e9 kruhy se pou\u017e\u00edvaj\u00ed v stroj\u00edch, kde se <a href=\"https:\/\/glimat.cz\/mistr\/prispevky\/jak-vymenit-vnejsi-filtr-kabiny-rypadla\/\">kabina<\/a> mus\u00ed b\u011bhem pr\u00e1ce ot\u00e1\u010det v\u016f\u010di spodn\u00ed konstrukci <a href=\"https:\/\/glimat.cz\/mistr\/prispevky\/udrzovani-cistoty-stavebnich-stroju\/\">stroje<\/a>, nap\u0159\u00edklad u p\u00e1sov\u00fdch a kolov\u00fdch bagr\u016f. Tato lo\u017eiska jsou vystavena cyklick\u00fdm zat\u00ed\u017een\u00edm s vysokou frekvenc\u00ed, p\u0159evodn\u00edmu momentu generovan\u00e9mu vy\u010dn\u00edvaj\u00edc\u00edm ramenem a zna\u010dn\u00fdm setrva\u010dn\u00fdm, osov\u00fdm a radi\u00e1ln\u00edm sil\u00e1m, co\u017e vy\u017eaduje zvl\u00e1\u0161tn\u00ed opatrnost, aby se p\u0159ede\u0161lo rychl\u00e9mu opot\u0159eben\u00ed.<\/p>\n\n\n\n<p>Oto\u010dn\u00e9 krou\u017eky jsou velmi velk\u00e9 a skl\u00e1daj\u00ed se ze \u010dty\u0159 hlavn\u00edch \u010d\u00e1st\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Spodn\u00ed ozuben\u00fd krou\u017eek<\/li>\n\n\n\n<li>Horn\u00ed krou\u017eek<\/li>\n\n\n\n<li>Valiv\u00e9 prvky (kuli\u010dky uspo\u0159\u00e1dan\u00e9 v jedn\u00e9 nebo dvou \u0159ad\u00e1ch nebo v\u00e1le\u010dky)<\/li>\n\n\n\n<li>Distan\u010dn\u00ed prvky<\/li>\n<\/ul>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"564\" src=\"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_1-1024x564.jpeg\" alt=\"\" class=\"wp-image-7629\" style=\"width:788px;height:auto\" srcset=\"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_1-1024x564.jpeg 1024w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_1-300x165.jpeg 300w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_1-200x110.jpeg 200w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_1-768x423.jpeg 768w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_1-1536x846.jpeg 1536w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_1-480x265.jpeg 480w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_1.jpeg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Oba krou\u017eky maj\u00ed dr\u00e1\u017eky zvan\u00e9 dr\u00e1hy, jejich\u017e rozm\u011br a tvar jsou navr\u017eeny tak, aby udr\u017eely valiv\u00e9 prvky a distan\u010dn\u00ed prvky. U bagr\u016f je ozuben\u00fd krou\u017eek lo\u017eiska p\u0159ipevn\u011bn ke spodn\u00edmu r\u00e1mu stroje pomoc\u00ed \u0161roubov\u00fdch spoj\u016f. Horn\u00ed krou\u017eek, bez ozuben\u00ed, je propojen s r\u00e1mem kabiny. Oto\u010dn\u00fd krou\u017eek umo\u017e\u0148uje vz\u00e1jemn\u00e9 ot\u00e1\u010den\u00ed obou r\u00e1m\u016f a ovl\u00e1d\u00e1 rota\u010dn\u00ed pohyb prost\u0159ednictv\u00edm reduk\u010dn\u00ed p\u0159evodovky. Reduk\u010dn\u00ed p\u0159evodovka je namontov\u00e1na na r\u00e1mu kabiny a m\u00e1 pastorek se\u0159\u00edzen\u00fd s ozuben\u00edm na lo\u017eisku za \u00fa\u010delem pohonu pohybu.<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_2.jpeg\" alt=\"\" class=\"wp-image-7628\" srcset=\"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_2.jpeg 1920w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_2-300x169.jpeg 300w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_2-1024x576.jpeg 1024w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_2-200x113.jpeg 200w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_2-768x432.jpeg 768w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_2-1536x864.jpeg 1536w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_2-480x270.jpeg 480w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"HLAVN\u00cd-P\u0158\u00cd\u010cINY-PRASKNUT\u00cd-A-V\u00ddM\u011aNY-OTO\u010cN\u00c9HO-KROU\u017dKU\"><strong>Hlavn\u00ed p\u0159\u00ed\u010diny prasknut\u00ed a v\u00fdm\u011bny oto\u010dn\u00e9ho krou\u017eku<\/strong><\/h2>\n\n\n\n<p>Nej\u010dast\u011bj\u0161\u00ed p\u0159\u00ed\u010dinou v\u00fdm\u011bny oto\u010dn\u00e9ho krou\u017eku je prasknut\u00ed jednoho \u010di v\u00edce zub\u016f na spodn\u00edm krou\u017eku. To znemo\u017e\u0148uje provoz, proto\u017ee po\u010det po\u0161kozen\u00fdch zub\u016f rychle nar\u016fst\u00e1. Hlavn\u00ed p\u0159\u00ed\u010dinou je zhor\u0161en\u00ed nebo selh\u00e1n\u00ed brzdov\u00e9ho syst\u00e9mu pohonn\u00e9 p\u0159evodovky. Pokud tento syst\u00e9m nen\u00ed \u00fa\u010dinn\u00fd p\u0159i zm\u011bn\u011b sm\u011bru pohybu kabiny, obr\u00e1cen\u00ed to\u010div\u00e9ho momentu p\u016fsob\u00edc\u00edho na <a href=\"https:\/\/glimat.cz\/mistr\/prispevky\/bezkladivovy-system-uchyceni-zubu\/\">zuby<\/a> zp\u016fsob\u00ed jejich vych\u00fdlen\u00ed nad mez n\u00e1vrhov\u00fdch specifikac\u00ed. Riziko prasknut\u00ed je nejvy\u0161\u0161\u00ed, kdy\u017e je <a href=\"https:\/\/glimat.cz\/mistr\/prispevky\/lzice-a-rychloupinace-pro-rypadla\/\">l\u017e\u00edce<\/a> zat\u00ed\u017een\u00e1 a ot\u00e1\u010dky jsou vysok\u00e9.<\/p>\n\n\n\n<p>Dal\u0161\u00edm probl\u00e9mem, kter\u00fd se m\u016f\u017ee vyskytnout, je zablokov\u00e1n\u00ed lo\u017eiska. Navzdory vysok\u00fdm zat\u00ed\u017een\u00edm, kter\u00fdm jsou oto\u010dn\u00e9 krou\u017eky vystaveny, je pom\u011br pr\u016f\u0159ezu k pr\u016fm\u011bru relativn\u011b mal\u00fd. To je \u010din\u00ed n\u00e1chyln\u00fdmi k deformac\u00edm, pokud nejsou \u0159\u00e1dn\u011b podep\u0159eny. Je proto d\u016fle\u017eit\u00e9, aby nosn\u00e1 konstrukce byla dostate\u010dn\u011b pevn\u00e1, podp\u011brn\u00e9 plochy dokonale rovn\u00e9 a upev\u0148ovac\u00ed syst\u00e9m br\u00e1nil deformac\u00edm p\u0159i vysok\u00e9m zat\u00ed\u017een\u00ed. V opa\u010dn\u00e9m p\u0159\u00edpad\u011b krom\u011b rizika zablokov\u00e1n\u00ed lo\u017eiska hroz\u00ed tak\u00e9 trval\u00e9 po\u0161kozen\u00ed valiv\u00fdch drah.<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"JAK-P\u0158EDEJ\u00cdT-PO\u0160KOZEN\u00cd-OTO\u010cN\u00ddCH-KROU\u017dK\u016e\"><strong>Jak p\u0159edch\u00e1zet po\u0161kozen\u00ed oto\u010dn\u00fdch krou\u017ek\u016f<\/strong><\/h2>\n\n\n\n<p>\u017divotnost oto\u010dn\u00fdch krou\u017ek\u016f lze prodlou\u017eit dodr\u017eov\u00e1n\u00edm n\u011bkolika osv\u011bd\u010den\u00fdch z\u00e1sad. Za\u010d\u00edn\u00e1 to v\u00fdb\u011brem materi\u00e1l\u016f p\u0159i v\u00fdrob\u011b a zahrnuje spr\u00e1vnou mont\u00e1\u017e na rypadle a efektivn\u00ed rutinn\u00ed \u00fadr\u017ebu, kter\u00e1 m\u016f\u017ee v\u00fdrazn\u011b sn\u00ed\u017eit p\u0159ed\u010dasn\u00e9 opot\u0159eben\u00ed.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-style-plain is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>PAMATUJTE<\/strong><br>Pro p\u0159edejit\u00ed prasknut\u00ed a zablokov\u00e1n\u00ed oto\u010dn\u00fdch krou\u017ek\u016f je kl\u00ed\u010dov\u00e9 dodr\u017eovat pravidla spr\u00e1vn\u00e9 mont\u00e1\u017ee, pravideln\u00e9 \u00fadr\u017eby a pou\u017e\u00edvat vhodn\u00e9 materi\u00e1ly a tepeln\u00e9 zpracov\u00e1n\u00ed.<\/p>\n<\/blockquote>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Materi\u00e1ly a tepeln\u00e9 zpracov\u00e1n\u00ed<\/strong><\/h3>\n\n\n\n<p>V\u00fdb\u011br materi\u00e1l\u016f a tepeln\u00e9ho zpracov\u00e1n\u00ed je rozhoduj\u00edc\u00ed pro dosa\u017een\u00ed pevn\u00fdch, odoln\u00fdch oto\u010dn\u00fdch krou\u017ek\u016f, zejm\u00e9na s ohledem na \u017eivotnost zub\u016f. Obvykle se pou\u017e\u00edvaj\u00ed dva typy oceli: 42CrMo4 kalen\u00e1 na R=90\u2013100 kgf\/mm\u00b2 pro vnit\u0159n\u00ed krou\u017eky a C45 kalen\u00e1 na R=70\u201380 kgf\/mm\u00b2 pro vn\u011bj\u0161\u00ed krou\u017eky.<\/p>\n\n\n\n<p>Je rovn\u011b\u017e nutn\u00e9 prov\u00e9st povrchov\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed v nejv\u00edce nam\u00e1han\u00fdch oblastech lo\u017eiska, jimi\u017e jsou dr\u00e1hy valiv\u00fdch prvk\u016f a zuby vnit\u0159n\u00edho krou\u017eku. Induk\u010dn\u00ed kalen\u00ed zvy\u0161uje <a href=\"https:\/\/glimat.cz\/mistr\/prispevky\/opotrebitelnost-a-odolnost-pasoveho-podvozku\/\">odolnost<\/a> zub\u016f proti ohybu a \u00fanav\u011b na kontaktn\u00edch ploch\u00e1ch. Valiv\u00e9 dr\u00e1hy se zpracov\u00e1vaj\u00ed stejn\u00fdm zp\u016fsobem, aby se zabr\u00e1nilo opot\u0159eben\u00ed zp\u016fsoben\u00e9mu neust\u00e1l\u00fdm pohybem pohybliv\u00fdch \u010d\u00e1st\u00ed.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>P\u0159eprava a skladov\u00e1n\u00ed<\/strong><\/h3>\n\n\n\n<p>Aby p\u0159edej\u00edt n\u00e1raz\u016fm a po\u0161kozen\u00ed, zejm\u00e9na radi\u00e1ln\u00edmu, mus\u00ed b\u00fdt oto\u010dn\u00fd krou\u017eek zabalen ve pevn\u00e9 ob\u00e1lce a p\u0159epravov\u00e1n vodorovn\u011b. P\u0159i skladov\u00e1n\u00ed mus\u00ed z\u016fstat ob\u00e1lka a lo\u017eisko v kryt\u00e9m prostoru, chr\u00e1n\u011bny p\u0159ed pov\u011btrnostn\u00edmi vlivy, kter\u00e9 mohou zp\u016fsobit korozi. P\u0159i vybalov\u00e1n\u00ed je t\u0159eba db\u00e1t na nepo\u0161kozen\u00ed <a href=\"https:\/\/glimat.cz\/mistr\/prispevky\/tesneni-bulldog-kvalita-oem\/\">t\u011bsn\u011bn\u00ed<\/a> a odmastit lo\u017eisko pomoc\u00ed komer\u010dn\u011b dostupn\u00fdch \u0159edidel bez chlorid\u016f, proto\u017ee chloridy po\u0161kozuj\u00ed povrchy.<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"MONTA\u017d-OTO\u010cN\u00c9HO-KROU\u017dKU\"><strong>Mont\u00e1\u017e oto\u010dn\u00e9ho krou\u017eku<\/strong><\/h2>\n\n\n\n<p>Proces v\u00fdm\u011bny po\u0161kozen\u00e9ho oto\u010dn\u00e9ho krou\u017eku zahrnuje n\u011bkolik p\u0159edb\u011b\u017en\u00fdch krok\u016f pro spr\u00e1vnou mont\u00e1\u017e nov\u00e9ho lo\u017eiska. P\u0159i demont\u00e1\u017ei je d\u016fle\u017eit\u00e9:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Odstranit v\u0161echny ne\u010distoty a usazeniny z op\u011brn\u00e9 plochy lo\u017eiska.<\/li>\n\n\n\n<li>Zkontrolovat stav konstrukce, ke kter\u00e9 bude lo\u017eisko p\u0159ipojeno (to je z\u00e1sadn\u00ed pro spr\u00e1vnou funkci a \u017eivotnost lo\u017eiska).<\/li>\n\n\n\n<li>Ov\u011b\u0159it, zda spojovac\u00ed plochy nebyly po\u0161kozeny b\u011bhem provozu stroje nebo demont\u00e1\u017ee (nevhodn\u00e1 rovinatost m\u016f\u017ee v\u00e9st k zablokov\u00e1n\u00ed lo\u017eiska).<\/li>\n<\/ul>\n\n\n\n<p>Po proveden\u00ed t\u011bchto kontrol lze lo\u017eisko um\u00edstit na spodn\u00ed r\u00e1m stroje. Pro spr\u00e1vn\u00e9 a \u00fa\u010dinn\u00e9 usazen\u00ed je t\u0159eba postupovat podle ozna\u010den\u00ed na lo\u017eisku. V\u0161echny oto\u010dn\u00e9 krou\u017eky maj\u00ed p\u0159echodovou z\u00f3nu za\u010d\u00e1tku a konce kalen\u00ed, kter\u00e1 je nejcitliv\u011bj\u0161\u00ed oblast\u00ed. Je nutn\u00e9, aby p\u0159echodov\u00e9 body kalen\u00ed byly co nejd\u00e1le od oblasti maxim\u00e1ln\u00edho zat\u00ed\u017een\u00ed b\u011bhem provozu stroje.<\/p>\n\n\n\n<p>P\u0159ed zah\u00e1jen\u00edm upevn\u011bn\u00ed lo\u017eiska k r\u00e1mu je t\u0159eba zkontrolovat, zda upev\u0148ovac\u00ed \u0161rouby odpov\u00eddaj\u00ed specifikac\u00edm uveden\u00fdm v n\u00e1vodu v\u00fdrobce. D\u016fle\u017eit\u00e9 je tak\u00e9 nejprve namazat \u0161rouby a pou\u017e\u00edt ploch\u00e9, neelastick\u00e9 podlo\u017eky. Pot\u00e9 je nutn\u00e9 m\u00edrn\u011b dot\u00e1hnout \u0161rouby prvn\u00edho krou\u017eku (spodn\u00edho krou\u017eku v po\u0159ad\u00ed zobrazen\u00e9m na n\u00ed\u017ee uveden\u00e9m obr\u00e1zku), aby se zabr\u00e1nilo vzniku pnut\u00ed nebo deformac\u00edm samotn\u00e9ho krou\u017eku. Po dot\u00e1hnut\u00ed \u0161roub\u016f se operace dokon\u010d\u00ed aplikac\u00ed to\u010div\u00fdch moment\u016f \u0161roub\u016f uveden\u00fdch v n\u00e1vodu v\u00fdrobce pomoc\u00ed momentov\u00e9ho kl\u00ed\u010de s odpov\u00eddaj\u00edc\u00ed kapacitou.<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"896\" height=\"894\" src=\"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_3.png\" alt=\"\" class=\"wp-image-7627\" style=\"width:606px;height:auto\" srcset=\"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_3.png 896w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_3-300x299.png 300w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_3-200x200.png 200w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_3-768x766.png 768w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_3-480x479.png 480w\" sizes=\"(max-width: 896px) 100vw, 896px\" \/><\/figure>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-light-color has-dark-background-color has-text-color has-background has-link-color has-medium-font-size wp-elements-41d2ad1ac3972360241de18d60d85ac6\"><strong>UPOZORN\u011aN\u00cd<\/strong><br>Nej\u010dast\u011bj\u0161\u00ed p\u0159\u00ed\u010dinou selh\u00e1n\u00ed oto\u010dn\u00fdch krou\u017ek\u016f je nespr\u00e1vn\u00e1 funkce brzdov\u00e9ho syst\u00e9mu pohonn\u00e9 p\u0159evodovky, co\u017e vede k prasknut\u00ed zub\u016f a v\u00e1\u017en\u00fdm \u0161kod\u00e1m.<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Excentricita oto\u010dn\u00e9ho krou\u017eku a mont\u00e1\u017e pastorku<\/strong><\/h3>\n\n\n\n<p>Za druh\u00e9, je t\u0159eba zohlednit excentricitu oto\u010dn\u00e9ho krou\u017eku, aby se p\u0159ede\u0161lo zablokov\u00e1n\u00ed pohonn\u00e9 p\u0159evodovky nebo p\u0159ed\u010dasn\u00e9mu opot\u0159eben\u00ed zub\u016f. D\u00edky n\u00edzk\u00e9mu pom\u011bru tlou\u0161\u0165ky k pr\u016fm\u011bru maj\u00ed krou\u017eky sklon k deformac\u00edm b\u011bhem tepeln\u00e9ho zpracov\u00e1n\u00ed. I kdy\u017e to negativn\u011b neovliv\u0148uje kvalitu v\u00fdroby, d\u00e1v\u00e1 jim tvar lehce eliptick\u00fd, nikoli dokonal\u00fd kruhov\u00fd.<\/p>\n\n\n\n<p>B\u011bhem mont\u00e1\u017ee je nutn\u00e9 zkontrolovat vertik\u00e1ln\u00ed vyrovn\u00e1n\u00ed lo\u017eiska a pastorku. I pokud m\u00e1 stroj v\u00edce ne\u017e jeden pastorek, spojka by m\u011bla b\u00fdt um\u00edst\u011bna v bodech maxim\u00e1ln\u00ed excentricity lo\u017eiska. Body maxim\u00e1ln\u00ed excentricity jsou na lo\u017eisku ozna\u010deny t\u0159emi zuby nat\u0159en\u00fdmi na \u017eluto. To umo\u017e\u0148uje kalibraci v\u016fle mezi dv\u011bma sadami zub\u016f v bod\u011b maxim\u00e1ln\u00ed vzd\u00e1lenosti mezi ob\u011bma komponentami. Dosahuje se toho se\u0159\u00edzen\u00edm v\u016fle mezi stranami zub\u016f krou\u017eku a pastorku, p\u0159i\u010dem\u017e v\u016fle \u010din\u00ed minim\u00e1ln\u011b [(0,05 * M)] mm, kde M je modul zubu.<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"833\" height=\"807\" src=\"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_4.png\" alt=\"\" class=\"wp-image-7626\" srcset=\"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_4.png 833w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_4-300x291.png 300w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_4-200x194.png 200w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_4-768x744.png 768w, https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/GRAFIKA_LAMANIE_SIE_WIENCOW_OBROTU_DLACZEGO_TAK_SIE_DZIEJE_I_JAK_TEGO_UNIKNAC_4-480x465.png 480w\" sizes=\"(max-width: 833px) 100vw, 833px\" \/><\/figure>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Po mont\u00e1\u017ei se doporu\u010duje n\u011bkolikr\u00e1t oto\u010dit syst\u00e9mem, aby se ov\u011b\u0159ilo spr\u00e1vn\u00e9 zachycen\u00ed spojky a zda nedoch\u00e1z\u00ed k nadm\u011brn\u00e9mu hluku zp\u016fsoben\u00e9mu nespr\u00e1vn\u00fdm ozuben\u00edm. Po kontrole a p\u0159ed uveden\u00edm pohonu ot\u00e1\u010den\u00ed kabiny do provozu je t\u0159eba namazat zuby, p\u0159i\u010dem\u017e se db\u00e1, aby boky v\u0161ech zub\u016f byly kompletn\u011b pokryty mazivem.<\/p>\n\n\n\n<p>Na z\u00e1v\u011br se doporu\u010duje zm\u011b\u0159it a zaznamenat v\u016fli stroje. M\u011b\u0159\u00ed se pomoc\u00ed kompar\u00e1toru um\u00edst\u011bn\u00e9ho, jak je uk\u00e1z\u00e1no na obr\u00e1zku, mezi horn\u00edm a spodn\u00edm krou\u017ekem co nejbl\u00ed\u017ee valiv\u00fdm dr\u00e1h\u00e1m, aby se minimalizoval vliv pru\u017en\u00fdch deformac\u00ed v nosn\u00e9 konstrukci. Po nastaven\u00ed a vynulov\u00e1n\u00ed kompar\u00e1toru se stroj p\u0159ivede do stavu maxim\u00e1ln\u00edho zat\u00ed\u017een\u00ed a zm\u011bny zp\u016fsoben\u00e9 v\u016fl\u00ed se zm\u011b\u0159\u00ed. Nejvy\u0161\u0161\u00ed nam\u011b\u0159en\u00e1 hodnota v r\u016fzn\u00fdch \u00fahlov\u00fdch poloh\u00e1ch p\u0159edstavuje po\u010d\u00e1te\u010dn\u00ed v\u016fli stroje a slou\u017e\u00ed jako referen\u010dn\u00ed hodnota pro budouc\u00ed m\u011b\u0159en\u00ed, kter\u00e1 jsou nutn\u00e1 pro monitorov\u00e1n\u00ed stavu oto\u010dn\u00e9ho krou\u017eku.<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u00dadr\u017eba<\/strong><\/h2>\n\n\n\n<p>Aby maximalizovat \u017eivotnost lo\u017eiska a zajistit jeho spr\u00e1vnou funkci, je nutn\u00e9 prov\u00e1d\u011bt pravideln\u00e9 kontroly maz\u00e1n\u00ed, dotahov\u00e1n\u00ed upev\u0148ovac\u00edch \u0161roub\u016f, stavu t\u011bsn\u011bn\u00ed a v\u016fle stroje.<\/p>\n\n\n\n<p>Lo\u017eisko je dod\u00e1v\u00e1no s p\u0159edmazen\u00fdmi valiv\u00fdmi drahami. Je proto t\u0159eba ho promazat po prvn\u00edch 50 hodin\u00e1ch provozu a n\u00e1sledn\u011b v intervalech z\u00e1visl\u00fdch na provozn\u00edch podm\u00ednk\u00e1ch stroje (ale nikdy ne d\u00e9le ne\u017e po 100 hodin\u00e1ch provozu). D\u00e1le je nutn\u00e9 p\u0159ed a po del\u0161\u00edch odst\u00e1vk\u00e1ch stroje oto\u010dn\u00fd krou\u017eek promazat. Mazivo se aplikuje za chodu ot\u00e1\u010dej\u00edc\u00edho se lo\u017eiska a je dostate\u010dn\u00e9, kdy\u017e mazivo vytla\u010d\u00ed t\u011bsn\u011bn\u00ed a vytvo\u0159\u00ed na n\u011bm tenkou vrstvu.<\/p>\n\n\n\n<p>B\u011bhem cel\u00e9 \u017eivotnosti setrva\u010dn\u00edkov\u00e9ho kola je d\u016fle\u017eit\u00e9 prov\u00e1d\u011bt vizu\u00e1ln\u00ed kontroly stavu t\u011bsn\u011bn\u00ed a vym\u011bnit je, pokud vypadaj\u00ed opot\u0159ebovan\u011b nebo k\u0159ehce. Podle stejn\u00e9ho pl\u00e1nu \u00fadr\u017eby je t\u0159eba boky zub\u016f zcela pokr\u00fdt mazivem, rozet\u0159en\u00fdm \u0161t\u011btcem nebo nast\u0159\u00edkat sprejem.<\/p>\n\n\n\n<p>Jak ji\u017e bylo zm\u00edn\u011bno v\u00fd\u0161e, je dobr\u00fdm zvykem m\u011b\u0159it v\u016fli stroje jednou ro\u010dn\u011b, aby se zjistily probl\u00e9my spojen\u00e9 s nerovnom\u011brn\u00fdm opot\u0159eben\u00edm valiv\u00fdch drah. Maxim\u00e1ln\u00ed povolen\u00fd n\u00e1r\u016fst z\u00e1vis\u00ed na n\u011bkolika faktorech. Pat\u0159\u00ed sem pr\u016fm\u011br lo\u017eiska, typ a velikost valiv\u00fdch prvk\u016f (kuli\u010dky nebo v\u00e1le\u010dky) a zp\u016fsob pou\u017eit\u00ed (vy\u0161\u0161\u00ed \u00farovn\u011b opot\u0159eben\u00ed mohou b\u00fdt p\u0159ijateln\u00e9, pokud neohro\u017euj\u00ed funkci). Ve v\u0161ech p\u0159\u00edpadech, kdy je n\u00e1r\u016fst \u010dty\u0159ikr\u00e1t v\u011bt\u0161\u00ed ne\u017e po\u010d\u00e1te\u010dn\u00ed v\u016fle, se doporu\u010duje zv\u00e1\u017eit v\u00fdm\u011bnu oto\u010dn\u00e9ho krou\u017eku.<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"P\u0158\u00cd\u010cINY-PO\u0160KOZEN\u00cd-OTO\u010cN\u00ddCH-KROU\u017dK\u016e-A-ZP\u016eSOBY-JICH-P\u0158EDCH\u00c1ZEN\u00cd\"><strong>P\u0159\u00ed\u010diny po\u0161kozen\u00ed oto\u010dn\u00fdch krou\u017ek\u016f a zp\u016fsoby jejich p\u0159edch\u00e1zen\u00ed<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th>P\u0159\u00ed\u010dina po\u0161kozen\u00ed<\/th><th>Popis<\/th><th>Zp\u016fsob p\u0159edch\u00e1zen\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Prasknut\u00ed zub\u016f<\/td><td>Nej\u010dast\u011bji zp\u016fsoben\u00e9 zhor\u0161en\u00edm brzdov\u00e9ho syst\u00e9mu pohonn\u00e9 p\u0159evodovky.<\/td><td>Pravideln\u00e1 <a href=\"https:\/\/glimat.cz\/mistr\/prispevky\/udrzba-a-kontrola-stavebnich-stroju\/\">kontrola<\/a> a \u00fadr\u017eba brzdov\u00e9ho syst\u00e9mu.<\/td><\/tr><tr><td>Zablokov\u00e1n\u00ed lo\u017eiska<\/td><td>Vych\u00e1z\u00ed z deformace lo\u017eiska p\u0159i nedostate\u010dn\u00e9m podpo\u0159e.<\/td><td>Zaji\u0161t\u011bn\u00ed dostate\u010dn\u00e9 tuhosti nosn\u00e9 konstrukce a rovinnosti podp\u011brn\u00fdch ploch.<\/td><\/tr><tr><td>Nespr\u00e1vn\u00e1 mont\u00e1\u017e<\/td><td>Nespr\u00e1vn\u00e9 uta\u017een\u00ed \u0161roub\u016f nebo chybn\u00e9 um\u00edst\u011bn\u00ed sou\u010d\u00e1st\u00ed b\u011bhem mont\u00e1\u017ee.<\/td><td>Dodr\u017eov\u00e1n\u00ed mont\u00e1\u017en\u00edch postup\u016f, pou\u017eit\u00ed ploch\u00fdch podlo\u017eek a naolejovan\u00fdch \u0161roub\u016f.<\/td><\/tr><tr><td>Nespr\u00e1vn\u00e1 \u00fadr\u017eba<\/td><td>Nedostatek pravideln\u00e9ho maz\u00e1n\u00ed, dotahov\u00e1n\u00ed \u0161roub\u016f a kontroly stavu t\u011bsn\u011bn\u00ed.<\/td><td>Pravideln\u00e9 revize, maz\u00e1n\u00ed a v\u00fdm\u011bna po\u0161kozen\u00fdch t\u011bsn\u011bn\u00ed.<\/td><\/tr><tr><td>Nevhodn\u00e9 skladovac\u00ed podm\u00ednky<\/td><td>Vystaven\u00ed pov\u011btrnostn\u00edm vliv\u016fm vedouc\u00ed korozi a po\u0161kozen\u00ed.<\/td><td>Skladov\u00e1n\u00ed v uzav\u0159en\u00fdch such\u00fdch prostorech, ochrana p\u0159ed pov\u011btrnostn\u00edmi vlivy.<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Opot\u0159eben\u00ed a l\u00e1m\u00e1n\u00ed zub\u016f jsou hlavn\u00edmi probl\u00e9my souvisej\u00edc\u00edmi s oto\u010dn\u00fdmi korunami: pro prodlou\u017een\u00ed jejich \u017eivotnosti se doporu\u010duje dodr\u017eovat ur\u010dit\u00e1 pravidla p\u0159i jejich navrhov\u00e1n\u00ed, p\u0159eprav\u011b, instalaci a \u00fadr\u017eb\u011b.<\/p>\n","protected":false},"author":4,"featured_media":7623,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[329],"tags":[73,343,342],"coauthors":[76],"class_list":["post-6893","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-obratkove-vence","tag-glimat","tag-lamani","tag-obratkove-vence"],"acf":[],"magazineBlocksPostFeaturedMedia":{"thumbnail":"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/Wience_obrotu_Glimat_0-triangle-200x133.jpg","medium":"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/Wience_obrotu_Glimat_0-triangle-300x200.jpg","medium_large":"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/Wience_obrotu_Glimat_0-triangle-768x512.jpg","large":"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/Wience_obrotu_Glimat_0-triangle-1024x682.jpg","1536x1536":"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/Wience_obrotu_Glimat_0-triangle-1536x1024.jpg","2048x2048":"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/Wience_obrotu_Glimat_0-triangle-2048x1365.jpg","placeholder-img":"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/Wience_obrotu_Glimat_0-triangle-20x13.jpg","post-thumbnail":"https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/Wience_obrotu_Glimat_0-triangle-480x320.jpg"},"magazineBlocksPostAuthor":{"name":"Emilia","avatar":"https:\/\/secure.gravatar.com\/avatar\/f3b78af81e96ae143ad400ab9ad571648b291ee7fc5ec6323ea4c42c7a1083af?s=96&d=mm&r=g"},"magazineBlocksPostCommentsNumber":"0","magazineBlocksPostExcerpt":"Opot\u0159eben\u00ed a l\u00e1m\u00e1n\u00ed zub\u016f jsou hlavn\u00edmi probl\u00e9my souvisej\u00edc\u00edmi s oto\u010dn\u00fdmi korunami: pro prodlou\u017een\u00ed jejich \u017eivotnosti se doporu\u010duje dodr\u017eovat ur\u010dit\u00e1 pravidla p\u0159i jejich navrhov\u00e1n\u00ed, p\u0159eprav\u011b, instalaci a \u00fadr\u017eb\u011b.","magazineBlocksPostCategories":["Obr\u00e1tkov\u00e9 v\u011bnce"],"magazineBlocksPostViewCount":112,"magazineBlocksPostReadTime":11,"magazine_blocks_featured_image_url":{"full":["https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/Wience_obrotu_Glimat_0-triangle.jpg",2560,1706,false],"medium":["https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/Wience_obrotu_Glimat_0-triangle-300x200.jpg",300,200,true],"thumbnail":["https:\/\/glimat.cz\/mistr\/wp-content\/uploads\/2025\/04\/Wience_obrotu_Glimat_0-triangle-200x133.jpg",200,133,true]},"magazine_blocks_author":{"display_name":"Emilia","author_link":"https:\/\/glimat.cz\/mistr\/prispevky\/author\/emilia\/"},"magazine_blocks_comment":0,"magazine_blocks_author_image":"https:\/\/secure.gravatar.com\/avatar\/f3b78af81e96ae143ad400ab9ad571648b291ee7fc5ec6323ea4c42c7a1083af?s=96&d=mm&r=g","magazine_blocks_category":"<a href=\"#\" class=\"category-link category-link-329\">Obr\u00e1tkov\u00e9 v\u011bnce<\/a>","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - 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