{"id":15770,"date":"2025-03-31T13:50:16","date_gmt":"2025-03-31T13:50:16","guid":{"rendered":"https:\/\/tuohaihardware.com\/?p=15770"},"modified":"2026-09-26T08:24:53","modified_gmt":"2026-09-26T08:24:53","slug":"jaky-je-limit-pracovniho-zatizeni-retezu","status":"publish","type":"post","link":"https:\/\/tuohaihardware.com\/cs\/what-is-working-load-limit-of-chains\/","title":{"rendered":"Co je limit pracovn\u00edho zat\u00ed\u017een\u00ed \u0159et\u011bz\u016f"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15773 aligncenter\" src=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/\uf06cLoad-Types-of-Chain.jpg\" alt=\"\uf06c Typy zat\u00ed\u017een\u00ed \u0159et\u011bzu\" width=\"600\" height=\"400\" srcset=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/\uf06cLoad-Types-of-Chain.jpg 600w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/\uf06cLoad-Types-of-Chain-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2>Definice limitu pracovn\u00edho zat\u00ed\u017een\u00ed<\/h2>\n<p>Mezn\u00ed nosnost je maxim\u00e1ln\u00ed statick\u00e9 zat\u00ed\u017een\u00ed, kter\u00e9 \u0159et\u011bz snese za norm\u00e1ln\u00edch podm\u00ednek pou\u017e\u00edv\u00e1n\u00ed. B\u011b\u017en\u011b se tomu \u0159\u00edk\u00e1 \u201cWLL\u201d. M\u016f\u017ee p\u0159esn\u011b odr\u00e1\u017eet bezpe\u010dn\u00e9 zat\u00ed\u017een\u00ed, kter\u00e9 \u0159et\u011bz snese. Je to tak\u00e9 kl\u00ed\u010dov\u00fd parametr p\u0159i n\u00e1vrhu, v\u00fdb\u011bru a pou\u017e\u00edv\u00e1n\u00ed \u0159et\u011bzu pro zaji\u0161t\u011bn\u00ed bezpe\u010dnosti b\u011bhem pou\u017e\u00edv\u00e1n\u00ed.<\/p>\n<h2><strong>Faktory ovliv\u0148uj\u00edc\u00ed WLL<\/strong><\/h2>\n<p>Limit pracovn\u00edho zat\u00ed\u017een\u00ed (WLL) \u0159et\u011bzu je ovlivn\u011bn mnoha faktory. R\u016fzn\u00e9 materi\u00e1ly, prost\u0159ed\u00ed pou\u017eit\u00ed a v\u00fdrobn\u00ed procesy budou m\u00edt r\u016fzn\u00e9 \u00fa\u010dinky na WLL sva\u0159ovan\u00e9ho \u0159et\u011bzu.<\/p>\n<h3><strong>Materi\u00e1l<\/strong><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-15774 aligncenter\" src=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/Materials-of-Chains.jpg\" alt=\"Materi\u00e1ly \u0159et\u011bz\u016f\" width=\"600\" height=\"400\" srcset=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/Materials-of-Chains.jpg 600w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/Materials-of-Chains-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<ul>\n<li><strong><b>uhl\u00edkov\u00e1 ocel: <\/b><\/strong><a href=\"https:\/\/tuohaihardware.com\/cs\/ocelovy-retez\/retez-z-uhlikove-oceli\/\">\u0158et\u011bz z uhl\u00edkov\u00e9 oceli<\/a> m\u00e1 n\u00edzkou WLL a je vhodn\u00fd pouze pro lehk\u00e9 aplikace.<\/li>\n<li><strong><b>Legovan\u00e1 ocel:<\/b><\/strong>\u00a0P\u0159id\u00e1n\u00edm prvk\u016f, jako je chrom a molybden, se v\u00fdrazn\u011b zlep\u0161\u00ed pevnost a hou\u017eevnatost materi\u00e1lu. To d\u011bl\u00e1 <a href=\"https:\/\/tuohaihardware.com\/cs\/ocelovy-retez\/slitinovy-retez\/\" target=\"_blank\" rel=\"noopener\">\u0159et\u011bzy z legovan\u00e9 oceli<\/a> mnohem pevn\u011bj\u0161\u00ed a lze je pou\u017e\u00edt pro n\u011bkter\u00e9 t\u011b\u017ek\u00e9 stroje.<\/li>\n<li><strong><b>Nerez:<\/b><\/strong>\u00a0<a href=\"https:\/\/tuohaihardware.com\/cs\/nerezovy-ocelovy-retez\/\" target=\"_blank\" rel=\"noopener\">Nerezov\u00e9 \u0159et\u011bzy<\/a> jsou odoln\u00e9 proti korozi a lze je pou\u017e\u00edt v mo\u0159sk\u00e9m nebo chemick\u00e9m prost\u0159ed\u00ed, ale jejich WLL je asi 80% \u0159et\u011bz\u016f z uhl\u00edkov\u00e9 oceli.<\/li>\n<\/ul>\n<h3><strong>V\u00fdrobn\u00ed proces<\/strong><\/h3>\n<ul>\n<li><strong><b>Tepeln\u00e9 zpracov\u00e1n\u00ed: <\/b><\/strong>Kalen\u00ed a popou\u0161t\u011bn\u00ed m\u016f\u017ee \u00fa\u010dinn\u011b zlep\u0161it tvrdost a hou\u017eevnatost sva\u0159ovan\u00fdch \u0159et\u011bz\u016f a zv\u00fd\u0161it jejich WLL.<\/li>\n<li><strong><b>Proces sva\u0159ov\u00e1n\u00ed: <\/b><\/strong>Automatizovan\u00e9 bleskov\u00e9 sva\u0159ov\u00e1n\u00ed nebo sva\u0159ov\u00e1n\u00ed argonov\u00fdm obloukem m\u016f\u017ee nahradit tradi\u010dn\u00ed ru\u010dn\u00ed sva\u0159ov\u00e1n\u00ed. Pou\u017eit\u00ed technik pln\u00fdch svar\u016f zaji\u0161\u0165uje, \u017ee svar je pln\u00fd, hladk\u00fd a bez bublin nebo prasklin, co\u017e zlep\u0161uje tvrdost svarov\u00fdch spoj\u016f.<\/li>\n<li><strong><b>Povrchov\u00e1 \u00faprava:<\/b><\/strong>\u00a0\u017d\u00e1rov\u00e9 zinkov\u00e1n\u00ed nebo povlak m\u016f\u017ee zv\u00fd\u0161it odolnost proti korozi a tvrdost povrchu, co\u017e m\u016f\u017ee tak\u00e9 zlep\u0161it WLL \u0159et\u011bz\u016f.<\/li>\n<\/ul>\n<h3><strong>Velikost a struktura<\/strong><\/h3>\n<ul>\n<li><strong><b>Pr\u016fm\u011br dr\u00e1tu:<\/b><\/strong> To se t\u00fdk\u00e1 pr\u016fm\u011bru dr\u00e1tu pou\u017eit\u00e9ho k v\u00fdrob\u011b sva\u0159ovan\u00e9ho \u0159et\u011bzu. WLL je \u00fam\u011brn\u00e1 druh\u00e9 mocnin\u011b pr\u016fm\u011bru dr\u00e1tu. Nap\u0159\u00edklad \u0159et\u011bz o pr\u016fm\u011bru 12 mm m\u00e1 4kr\u00e1t v\u011bt\u0161\u00ed WLL ne\u017e \u0159et\u011bz o pr\u016fm\u011bru 6 mm.<\/li>\n<li><strong><b>Rozte\u010d: <\/b><\/strong>D\u00e9lka rozte\u010de (jako jsou \u0159et\u011bzy s kr\u00e1tk\u00fdm nebo dlouh\u00fdm \u010dl\u00e1nkem) m\u016f\u017ee p\u0159\u00edmo ovlivnit WLL. Kr\u00e1tko\u010dl\u00e1nkov\u00e9 \u0159et\u011bzy maj\u00ed vy\u0161\u0161\u00ed WLL ne\u017e \u0159et\u011bzy s dlouh\u00fdmi \u010dl\u00e1nky stejn\u00e9ho pr\u016fm\u011bru dr\u00e1tu a stejn\u00e9ho materi\u00e1lu.<\/li>\n<li><strong><b>Tvar \u0159et\u011bzov\u00e9ho \u010dl\u00e1nku:<\/b><\/strong>\u00a0Sva\u0159ovan\u00e9 \u010dl\u00e1nky \u0159et\u011bzu jsou obvykle sp\u00ed\u0161e ov\u00e1ln\u00e9 ne\u017e kulat\u00e9, proto\u017ee ov\u00e1ln\u00e9 \u010dl\u00e1nky maj\u00ed vy\u0161\u0161\u00ed pevnost v tahu.<\/li>\n<\/ul>\n<h3><strong>Typ zat\u00ed\u017een\u00ed<\/strong><\/h3>\n<ul>\n<li><strong><b>Statick\u00e9 zat\u00ed\u017een\u00ed:<\/b><\/strong>\u00a0Pomalu nar\u016fstaj\u00edc\u00ed z\u00e1t\u011b\u017e a WLL lze pou\u017e\u00edt p\u0159\u00edmo podle z\u00e1t\u011b\u017ee.<\/li>\n<li><strong><b>N\u00e1razov\u00e9 zat\u00ed\u017een\u00ed:<\/b><\/strong>\u00a0Pokud je \u0159et\u011bz pou\u017eit jako a <a href=\"https:\/\/tuohaihardware.com\/cs\/ocelovy-retez\/bezpecnostni-retez\/\" target=\"_blank\" rel=\"noopener\">bezpe\u010dnostn\u00ed \u0159et\u011bz<\/a> pro n\u00e1hl\u00e9 zastaven\u00ed padaj\u00edc\u00edho p\u0159edm\u011btu bude ta\u017en\u00e1 s\u00edla na \u0159et\u011bz 2-3n\u00e1sobek hmotnosti p\u0159edm\u011btu, proto je nutn\u00e9 zvolit \u0159et\u011bz s vy\u0161\u0161\u00ed WLL.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-15775 aligncenter\" src=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/\uf06cLoad-Types-of-Chain-1.jpg\" alt=\"Typy zat\u00ed\u017een\u00ed \u0159et\u011bzu\" width=\"600\" height=\"400\" srcset=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/\uf06cLoad-Types-of-Chain-1.jpg 600w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/\uf06cLoad-Types-of-Chain-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3><strong>Environment\u00e1ln\u00ed faktory<\/strong><\/h3>\n<ul>\n<li><strong><b>Teplota: <\/b><\/strong>\u0158et\u011bz z uhl\u00edkov\u00e9 oceli bude p\u0159i n\u00edzk\u00fdch teplot\u00e1ch k\u0159ehk\u00fd a vysok\u00e9 teploty sn\u00ed\u017e\u00ed pevnost \u0159et\u011bz\u016f, tak\u017ee ocelov\u00e9 \u0159et\u011bzy s vy\u0161\u0161\u00ed WLL by m\u011bly b\u00fdt vybr\u00e1ny pro prost\u0159ed\u00ed s n\u00edzkou nebo vysokou teplotou.<\/li>\n<li><strong><b>Koroze: <\/b><\/strong>P\u0159i pou\u017eit\u00ed v mo\u0159sk\u00e9 vod\u011b by m\u011bl b\u00fdt \u0159et\u011bz pou\u017e\u00edv\u00e1n pouze na 50% nebo dokonce 30% jeho WLL a povrchovou korozi \u0159et\u011bzu je t\u0159eba pravideln\u011b kontrolovat.<\/li>\n<\/ul>\n<h3><strong>opot\u0159eben\u00ed<\/strong><\/h3>\n<p>Sva\u0159ovan\u00fd \u0159et\u011bz se po dlouhodob\u00e9m pou\u017e\u00edv\u00e1n\u00ed opot\u0159ebuje a jeho WLL se bude postupn\u011b sni\u017eovat. Je t\u0159eba jej pravideln\u011b kontrolovat, aby se p\u0159ede\u0161lo bezpe\u010dnostn\u00edm nehod\u00e1m.<\/p>\n<h2><strong>Vztah mezi WLL a souvisej\u00edc\u00edmi parametry<\/strong><\/h2>\n<h3><strong><b>Breaking Strength<\/b><\/strong><\/h3>\n<p>Pevnost p\u0159i p\u0159etr\u017een\u00ed se z\u00edsk\u00e1 testov\u00e1n\u00edm, a to p\u016fsoben\u00edm zvy\u0161uj\u00edc\u00edho se zat\u00ed\u017een\u00ed na \u0159et\u011bz, dokud se nep\u0159etrhne. S\u00edla, kterou \u0159et\u011bz odol\u00e1v\u00e1 v okam\u017eiku p\u0159etr\u017een\u00ed, je jeho pevnost p\u0159i p\u0159etr\u017een\u00ed, zn\u00e1m\u00e1 tak\u00e9 jako p\u0159eru\u0161ovac\u00ed s\u00edla. Tato s\u00edla m\u00e1 nejp\u0159\u00edm\u011bj\u0161\u00ed vztah s WLL.<\/p>\n<h3><strong><b>Bezpe\u010dnostn\u00ed faktor<\/b><\/strong><\/h3>\n<p>Bezpe\u010dnostn\u00ed faktor je d\u016fle\u017eit\u00fdm parametrem ocelov\u00fdch \u0159et\u011bz\u016f, dok\u00e1\u017ee zm\u011b\u0159it bezpe\u010dnostn\u00ed rozp\u011bt\u00ed mezi vyp\u00ednac\u00ed silou a skute\u010dn\u00fdm pracovn\u00edm zat\u00ed\u017een\u00edm, zaji\u0161\u0165uje bezpe\u010dnost \u0159et\u011bzu p\u0159i pou\u017e\u00edv\u00e1n\u00ed a to, \u017ee nedojde k jeho po\u0161kozen\u00ed ani p\u0159i nehod\u011b.<\/p>\n<p>Mezn\u00ed pracovn\u00ed zat\u00ed\u017een\u00ed (WLL) lze vypo\u010d\u00edtat pomoc\u00ed meze pevnosti a bezpe\u010dnostn\u00edho faktoru:<\/p>\n<p style=\"text-align: center;\"><strong><b>WLL = Breaking Strength\/Safety Factor\u200b<\/b><\/strong><\/p>\n<p>Pokud m\u00e1 nap\u0159\u00edklad \u0159et\u011bz testovanou pevnost v p\u0159etr\u017een\u00ed 10 tun a bezpe\u010dnostn\u00ed faktor 5, pak jeho WLL je:<\/p>\n<p style=\"text-align: center;\"><strong><b>WLL=10\u00f75=2 tuny<\/b><\/strong><\/p>\n<p>Krom\u011b toho r\u016fzn\u00e9 aplikace vy\u017eaduj\u00ed r\u016fzn\u00e9 bezpe\u010dnostn\u00ed faktory.<\/p>\n<p><strong><b>Nap\u0159\u00edklad:<\/b><\/strong><\/p>\n<p>Pokud se ocelov\u00fd \u0159et\u011bz pou\u017e\u00edv\u00e1 ve zdvihac\u00edm pr\u016fmyslu, obecn\u011b je bezpe\u010dnostn\u00ed faktor 4 nebo 5.<\/p>\n<p>Ale pokud se \u0159et\u011bzy pou\u017e\u00edvaj\u00ed v aplikac\u00edch, kter\u00e9 zahrnuj\u00ed lidskou bezpe\u010dnost, bezpe\u010dnostn\u00ed faktor m\u016f\u017ee b\u00fdt a\u017e 8, jako je jevi\u0161tn\u00ed vybaven\u00ed atd.<\/p>\n<h2><strong>Normy souvisej\u00edc\u00ed s WLL<\/strong><\/h2>\n<h3><strong>Normy ISO<\/strong><\/h3>\n<ul>\n<li><strong>ISO 1834:<\/strong> Tato norma specifikuje klasifikaci a limity pracovn\u00edho zat\u00ed\u017een\u00ed (WLL) sva\u0159ovan\u00fdch ocelov\u00fdch \u0159et\u011bz\u016f, jako jsou t\u0159\u00eddy jako G80 a G100. Rozsah zkou\u0161ek zahrnuje tah, \u00fanavu, ohyb atd.<\/li>\n<\/ul>\n<h3><strong>Standardy ANSI<\/strong><\/h3>\n<ul>\n<li><strong>ASME B30.9:<\/strong> Toto je americk\u00fd standard <a href=\"https:\/\/tuohaihardware.com\/cs\/ocelovy-retez\/zavesny-zvedaci-retez\/\" target=\"_blank\" rel=\"noopener\">zvedac\u00ed \u0159et\u011bzy<\/a>, kter\u00e1 vy\u017eaduje, aby byl \u0159et\u011bz p\u0159ed odesl\u00e1n\u00edm odebr\u00e1n pro zkou\u0161ku rozbit\u00ed.<\/li>\n<li><strong>P\u0159edpisy OSHA:<\/strong> Je povinn\u00e9 pou\u017e\u00edvat \u0159et\u011bzy s <a href=\"https:\/\/liyantian.com\/labels\/\" target=\"_blank\" rel=\"noopener\">Ozna\u010dov\u00e1n\u00ed WLL<\/a>, a p\u0159et\u00ed\u017een\u00ed je neleg\u00e1ln\u00ed.<\/li>\n<\/ul>\n<h3>Normy DIN<\/h3>\n<ul>\n<li><strong>DIN 5685:<\/strong> Tato n\u011bmeck\u00e1 norma pro vysokopevnostn\u00ed \u0159et\u011bzy definuje chemick\u00e9 slo\u017een\u00ed a rozsah tvrdosti \u0159et\u011bz\u016f Grade 80 a Grade 100.<\/li>\n<\/ul>\n<p>Vezm\u011bte pros\u00edm na v\u011bdom\u00ed, \u017ee WLL m\u00e1 r\u016fzn\u00e9 po\u017eadavky podle r\u016fzn\u00fdch norem.<\/p>\n<p>Nap\u0159\u00edklad podle normy ISO m\u00e1 10mm sva\u0159ovan\u00fd \u0159et\u011bz G80 WLL p\u0159ibli\u017en\u011b 8 tun a bezpe\u010dnostn\u00ed faktor je 4. Proto\u017ee je v\u0161ak norma DIN p\u0159\u00edsn\u011bj\u0161\u00ed, 10mm \u0159et\u011bz G80 ze stejn\u00e9ho materi\u00e1lu a v\u00fdrobn\u00edho procesu m\u00e1 podle normy DIN WLL p\u0159ibli\u017en\u011b 7 tun.<\/p>\n<h2><strong>Jak vybrat spr\u00e1vn\u00fd \u0159et\u011bz s vhodn\u00fdm WLL<\/strong><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-15777 aligncenter\" src=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/Chains-Used-for-Lifting.jpg\" alt=\"\u0158et\u011bzy pou\u017e\u00edvan\u00e9 pro zved\u00e1n\u00ed\" width=\"600\" height=\"400\" srcset=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/Chains-Used-for-Lifting.jpg 600w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/Chains-Used-for-Lifting-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>P\u0159i v\u00fdb\u011bru \u0159et\u011bzu je krom\u011b velikosti a materi\u00e1lu nejd\u016fle\u017eit\u011bj\u0161\u00edm faktorem mez pracovn\u00edho zat\u00ed\u017een\u00ed (WLL). Zaji\u0161\u0165uje, \u017ee se \u0159et\u011bz b\u011bhem pou\u017e\u00edv\u00e1n\u00ed nedeformuje ani nezlom\u00ed.<\/p>\n<p>N\u00e1sleduj\u00edc\u00ed p\u0159\u00edklad vysv\u011btluje, jak vybrat nejvhodn\u011bj\u0161\u00ed \u0159et\u011bz pro WLL intuitivn\u011bj\u0161\u00edm zp\u016fsobem:<\/p>\n<ul>\n<li><strong>Aplikace:<\/strong> Pou\u017eit\u00ed zvedac\u00edho za\u0159\u00edzen\u00ed ke zved\u00e1n\u00ed 10tunov\u00e9ho p\u0159edm\u011btu.<\/li>\n<li><strong>Bezpe\u010dnostn\u00ed faktor:<\/strong> Proto\u017ee se jedn\u00e1 o vysoce rizikovou aplikaci, je zvolen bezpe\u010dnostn\u00ed faktor 5.<\/li>\n<li><strong>Zat\u00ed\u017een\u00ed:<\/strong> V okam\u017eiku zved\u00e1n\u00ed m\u016f\u017ee s\u00edla n\u00e1razu dos\u00e1hnout 1,5 n\u00e1sobku hmotnosti, tak\u017ee pot\u0159ebujeme celkov\u00e9 zat\u00ed\u017een\u00ed 10*1,5=15 tun, co\u017e je bezpe\u010dn\u00e1 z\u00e1t\u011b\u017e<\/li>\n<\/ul>\n<p>Podle bezpe\u010dnostn\u00edho faktoru a po\u017eadovan\u00e9ho zat\u00ed\u017een\u00ed m\u016f\u017eeme vypo\u010d\u00edtat vyp\u00ednac\u00ed s\u00edlu po\u017eadovan\u00e9ho \u0159et\u011bzu jako:<\/p>\n<p style=\"text-align: center;\"><strong>15*5=75 tun<\/strong><\/p>\n<p>M\u016f\u017eeme si tedy vybrat ten nejvhodn\u011bj\u0161\u00ed \u0159et\u011bz podle vyp\u00ednac\u00edho nap\u011bt\u00ed \u0159et\u011bzu, tj. 18mm \u0159et\u011bz G100, kter\u00fd m\u00e1 vyp\u00ednac\u00ed s\u00edlu 80 tun a m\u016f\u017ee n\u00e1m vyhov\u011bt.<\/p>\n<p><strong>Ohledy na \u017eivotn\u00ed prost\u0159ed\u00ed<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-15776 aligncenter\" src=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/Chains-in-Seawater-Environmental.jpg\" alt=\"\u0158et\u011bzy v prost\u0159ed\u00ed mo\u0159sk\u00e9 vody\" width=\"600\" height=\"400\" srcset=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/Chains-in-Seawater-Environmental.jpg 600w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2025\/03\/Chains-in-Seawater-Environmental-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>Pokud je \u0159et\u011bz pou\u017e\u00edv\u00e1n v mo\u0159sk\u00e9m prost\u0159ed\u00ed, m\u011bla by b\u00fdt vybr\u00e1na nerezov\u00e1 ocel 316 pro odolnost proti korozi.<\/p>\n<p>Nerezov\u00e1 ocel m\u00e1 v\u0161ak ni\u017e\u0161\u00ed pevnost ne\u017e legovan\u00e1 ocel, tak\u017ee mus\u00edme vypo\u010d\u00edtat podle konkr\u00e9tn\u00edch okolnost\u00ed, abychom n\u00e1le\u017eit\u011b sn\u00ed\u017eili WLL, abychom zlep\u0161ili jej\u00ed pevnost v lomu a zv\u00fd\u0161ili bezpe\u010dnost.<\/p>\n<h2><strong>Shrnut\u00ed<\/strong><\/h2>\n<p>WLL, co\u017e znamen\u00e1 omezen\u00ed pracovn\u00edho zat\u00ed\u017een\u00ed, je nejp\u0159\u00edm\u011bj\u0161\u00edm bezpe\u010dnostn\u00edm \u00fadajem sva\u0159ovan\u00e9ho ocelov\u00e9ho \u0159et\u011bzu. Je t\u0159eba jej vybrat na z\u00e1klad\u011b materi\u00e1lu, prost\u0159ed\u00ed pou\u017eit\u00ed, v\u00fdrobn\u00edho procesu a skute\u010dn\u00fdch pracovn\u00edch podm\u00ednek. Kl\u00ed\u010dov\u00e9 body jsou:<\/p>\n<ul>\n<li>P\u0159i volb\u011b WLL mus\u00ed b\u00fdt zat\u00ed\u017een\u00ed vypo\u010dteno podle nejhor\u0161\u00edho sc\u00e9n\u00e1\u0159e.<\/li>\n<li>Proto\u017ee r\u016fzn\u00ed v\u00fdrobci ocelov\u00fdch \u0159et\u011bz\u016f maj\u00ed r\u016fzn\u00e9 v\u00fdrobn\u00ed procesy, m\u016f\u017ee se skute\u010dn\u00e1 WLL li\u0161it. \u0158i\u010fte se tedy \u00fadaji v\u00fdrobce a neodhadujte bez podkladu.<\/li>\n<li>Po v\u00fdb\u011bru ocelov\u00fdch \u0159et\u011bz\u016f se spr\u00e1vn\u00fdm WLL je t\u0159eba jej b\u011bhem pou\u017e\u00edv\u00e1n\u00ed pravideln\u011b kontrolovat a podrobn\u011b zaznamen\u00e1vat, aby se zabr\u00e1nilo opot\u0159eben\u00ed v pr\u016fb\u011bhu \u010dasu, kter\u00e9 m\u016f\u017ee sn\u00ed\u017eit WLL a zp\u016fsobit bezpe\u010dnostn\u00ed nehody.<\/li>\n<\/ul>\n<p>Specifikace produkt\u016f souvisej\u00edc\u00ed s t\u00edmto t\u00e9matem naleznete <a href=\"https:\/\/tuohaihardware.com\/cs\/vyrobce-retezu-z-nerezove-oceli\/\">V\u00e1\u0161 d\u016fv\u011bryhodn\u00fd dodavatel \u0159et\u011bz\u016f z nerezov\u00e9 oceli<\/a> a <a href=\"https:\/\/tuohaihardware.com\/cs\/ocelovy-retez\/tazny-retez\/\">Ta\u017en\u00fd \u0159et\u011bz<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Definition of Working Load Limit The working load limit is the maximum static load that the chain can withstand under normal use conditions. It is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15772,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-15770","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is Working Load Limit of Chains - Tuohai Hardware<\/title>\n<meta name=\"description\" content=\"Understand the working load limit of chains, breaking strength and safety factors. 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