{"id":10369,"date":"2024-12-23T05:36:31","date_gmt":"2024-12-23T05:36:31","guid":{"rendered":"https:\/\/www.hndfcrane.com\/?post_type=posts&#038;p=10369"},"modified":"2024-12-25T02:13:51","modified_gmt":"2024-12-25T02:13:51","slug":"6-harbour-portal-cranes-failure","status":"publish","type":"posts","link":"https:\/\/www.hndfcrane.com\/cs\/posts\/6-harbour-portal-cranes-failure\/","title":{"rendered":"6 P\u0159\u00edru\u010dka pro poruchu a \u00fadr\u017ebu port\u00e1lov\u00fdch je\u0159\u00e1b\u016f p\u0159\u00edstavu"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Obsah<\/p><nav><ul><li><a href=\"#harbour-portal-cranes-failure-1-wire-rope-pulley-failure\">Porucha p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f1: Selh\u00e1n\u00ed kladky ocelov\u00e9ho lana<\/a><\/li><li><a href=\"#harbour-portal-cranes-failure-2-reducer-gear-failure\">Porucha p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f 2: Porucha reduk\u010dn\u00edho p\u0159evodu<\/a><\/li><li><a href=\"#harbour-portal-cranes-failure-3-coupling-failure\">Porucha p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f 3: Porucha spojky<\/a><\/li><li><a href=\"#harbour-portal-cranes-failure-4-brake-failure\">Porucha p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f 4: Selh\u00e1n\u00ed brzd<\/a><\/li><li><a href=\"#harbour-portal-cranes-failure-5-three-phase-ac-motor-failure\">Porucha p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f 5: Selh\u00e1n\u00ed t\u0159\u00edf\u00e1zov\u00e9ho st\u0159\u00eddav\u00e9ho motoru<\/a><\/li><li><a href=\"#harbour-portal-cranes-failure-6-abnormal-noise-at-the-hinge-point-of-the-boom\">Porucha p\u0159\u00edstavn\u00edho port\u00e1lov\u00e9ho je\u0159\u00e1bu 6: Abnorm\u00e1ln\u00ed hluk v bod\u011b z\u00e1v\u011bsu v\u00fdlo\u017en\u00edku<\/a><\/li><li><a href=\"#in-summary\">V souhrnu<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"843\" height=\"529\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2024\/12\/Single-Boom-Portal-crane.jpg\" alt=\"Selh\u00e1n\u00ed p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f\" class=\"wp-image-10258\"\/><\/figure>\n\n\n\n<p>S neust\u00e1l\u00fdm roz\u0161i\u0159ov\u00e1n\u00edm rozsahu v\u00fdstavby p\u0159\u00edstav\u016f, dok\u016f atd. se den ode dne zvy\u0161uje tak\u00e9 rozsah pou\u017eit\u00ed p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f v p\u0159\u00edstavn\u00edch provozech.<\/p>\n\n\n\n<p>Aby bylo mo\u017en\u00e9 pln\u011b vyu\u017e\u00edt funkce za\u0159\u00edzen\u00ed a zachovat bezpe\u010dnost a spolehlivost provozu, je nutn\u00e9 pos\u00edlit \u00fadr\u017ebu a \u0159\u00edzen\u00ed p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f. P\u0159i ka\u017edodenn\u00edm provozu p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f \u010dasto selh\u00e1vaj\u00ed kladky z ocelov\u00fdch lan, reduktory, spojky, brzdy, t\u0159\u00edf\u00e1zov\u00e9 motory na st\u0159\u00eddav\u00fd proud, vysokonap\u011b\u0165ov\u00e9 sk\u0159\u00edn\u011b, transform\u00e1tory atd. Je t\u0159eba p\u0159ijmout \u00fa\u010dinn\u00e1 opat\u0159en\u00ed pro \u00fadr\u017ebu, aby se minimalizovala pravd\u011bpodobnost souvisej\u00edc\u00edch poruch p\u0159\u00edstavn\u00edho port\u00e1lov\u00e9ho je\u0159\u00e1bu a aby se p\u0159\u00edstavn\u00ed port\u00e1lov\u00e9 je\u0159\u00e1by udr\u017eely v dobr\u00e9m provozn\u00edm stavu. Na tomto z\u00e1klad\u011b zlep\u0161it efektivitu provozu p\u0159\u00edstavu a zajistit bezpe\u010dnost v\u00fdroby.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"harbour-portal-cranes-failure-1-wire-rope-pulley-failure\">Porucha p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f1: Selh\u00e1n\u00ed kladky ocelov\u00e9ho lana<\/h2>\n\n\n\n<p>V <a href=\"https:\/\/www.hndfcrane.com\/cs\/harbour-portal-cranes\/\">p\u0159\u00edstavn\u00ed port\u00e1lov\u00e9 je\u0159\u00e1by<\/a> selh\u00e1n\u00ed, kladky ocelov\u00e9ho lana jsou hlavn\u00edmi silov\u00fdmi slo\u017ekami a b\u011bhem provozu za\u0159\u00edzen\u00ed \u010dasto doch\u00e1z\u00ed k po\u0161kozen\u00ed lo\u017eisek, prasknut\u00ed r\u00e1fku nebo zten\u010den\u00ed. Z\u00e1kladn\u00ed p\u0159\u00ed\u010dinou v\u00fd\u0161e uveden\u00fdch probl\u00e9m\u016f je to, \u017ee ocelov\u00e9 lano a kladka jsou spojeny a ob\u011b strany spole\u010dn\u011b vytv\u00e1\u0159ej\u00ed vytla\u010dovac\u00ed s\u00edlu, a pot\u00e9 bude kladka ovlivn\u011bna t\u0159en\u00edm a postupn\u011b se zten\u010duje. Kdy\u017e zten\u010den\u00ed dos\u00e1hne ur\u010dit\u00e9ho rozsahu, tlak zp\u016fsoben\u00fd ocelov\u00fdm lanem p\u0159ekro\u010d\u00ed tlak, kter\u00e9mu m\u016f\u017ee odolat, a nastanou probl\u00e9my s prask\u00e1n\u00edm.<\/p>\n\n\n\n<p><strong>N\u00e1vod na \u00fadr\u017ebu 1<\/strong><\/p>\n\n\n\n<p>\u00dadr\u017eba kladkostroj\u016f z ocelov\u00e9ho lana pro zaji\u0161t\u011bn\u00ed stabiln\u00edho a bezpe\u010dn\u00e9ho provozu kladkostroj\u016f, v prvn\u00ed \u0159ad\u011b je p\u0159\u00edsn\u011b zak\u00e1z\u00e1no p\u0159et\u011b\u017eovat je\u0159\u00e1b b\u011bhem pou\u017e\u00edv\u00e1n\u00ed, aby se nezv\u00fd\u0161ila nosnost kladek a nezp\u016fsobilo po\u0161kozen\u00ed lo\u017eisek. <\/p>\n\n\n\n<p>Za druh\u00e9, ocelov\u00e9 lano je\u0159\u00e1bu by m\u011blo b\u00fdt pravideln\u011b maz\u00e1no a udr\u017eov\u00e1no, aby se sn\u00ed\u017eilo t\u0159en\u00ed mezi kladkou a ocelov\u00fdm lanem a aby se zabr\u00e1nilo v\u00e1\u017en\u00e9mu opot\u0159eben\u00ed r\u00e1fku kladky a dr\u00e1\u017eky kola. <\/p>\n\n\n\n<p>Kone\u010dn\u011b, pokud dojde k v\u00e1\u017en\u00e9mu opot\u0159eben\u00ed na dr\u00e1\u017ece kola, jako je nerovnom\u011brn\u00e1 rychlost opot\u0159eben\u00ed ne men\u0161\u00ed ne\u017e 3 mm, praskliny v \u0159emenici a hodnota opot\u0159eben\u00ed tlou\u0161\u0165ky st\u011bny p\u0159edstavuje 1\/5 p\u016fvodn\u00ed tlou\u0161\u0165ky st\u011bny atd. , je pot\u0159eba \u0159emenici se\u0161rotovat a vym\u011bnit za novou \u0159emenici.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"harbour-portal-cranes-failure-2-reducer-gear-failure\">Porucha p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f 2: Porucha reduk\u010dn\u00edho p\u0159evodu<\/h2>\n\n\n\n<p>V p\u0159\u00edstavn\u00edm port\u00e1lov\u00e9m je\u0159\u00e1bu je reduktor z\u00e1kladn\u00ed sou\u010d\u00e1st\u00ed p\u0159evodovky, kter\u00e1 p\u0159en\u00e1\u0161\u00ed to\u010div\u00fd moment b\u011bhem procesu z\u00e1b\u011bru ozuben\u00fdch kol a pot\u00e9 upravuje ot\u00e1\u010dky motoru, dokud nedos\u00e1hne provozn\u00edch po\u017eadavk\u016f. V tomto procesu \u010dasto doch\u00e1z\u00ed k poruch\u00e1m ozuben\u00fdch kol, jako jsou lepen\u00e9 povrchy zub\u016f, odpojen\u00e9 zuby a siln\u011b opot\u0159ebovan\u00e9 povrchy zub\u016f.<\/p>\n\n\n\n<p><strong>N\u00e1vod na \u00fadr\u017ebu 2<\/strong><\/p>\n\n\n\n<p>P\u0159i \u00fadr\u017eb\u011b reduktoru je vy\u017eadov\u00e1no, aby se je\u0159\u00e1b b\u011bhem pou\u017e\u00edv\u00e1n\u00ed nep\u0159et\u011b\u017eoval a aby byl plynul\u00fd a pomal\u00fd p\u0159i brzd\u011bn\u00ed nebo rozjezdu. Nelze ji p\u0159\u00edmo zvr\u00e1tit bez zastaven\u00ed operace, pokud se nejedn\u00e1 o nouzovou situaci. Operace. B\u011bhem pou\u017e\u00edv\u00e1n\u00ed by m\u011bla b\u00fdt p\u0159evodovka pravideln\u011b dopl\u0148ov\u00e1na mazac\u00edm olejem, kter\u00fd spl\u0148uje po\u017eadavky na provozn\u00ed podm\u00ednky reduktoru, a sk\u0159\u00ed\u0148 by m\u011bla b\u00fdt v\u010das vy\u010di\u0161t\u011bna. <\/p>\n\n\n\n<p>Krom\u011b toho je nutn\u00e9 pravideln\u011b kontrolovat a analyzovat kvalitu oleje mazac\u00edho oleje, kombinovat v\u00fdsledky kontroly k objasn\u011bn\u00ed opot\u0159eben\u00ed reduk\u010dn\u00edho p\u0159evodu a prov\u00e1d\u011bt c\u00edlen\u00e1 opat\u0159en\u00ed \u00fadr\u017eby, aby se zabr\u00e1nilo zv\u00fd\u0161en\u00e9mu opot\u0159eben\u00ed a v kone\u010dn\u00e9m d\u016fsledku zp\u016fsobilo nehody za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"harbour-portal-cranes-failure-3-coupling-failure\">Porucha p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f 3: Porucha spojky<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"299\" height=\"282\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2024\/12\/Coupling-failure.png\" alt=\"Selh\u00e1n\u00ed spojky\" class=\"wp-image-10305\"\/><\/figure><\/div>\n\n\n<p>Zab\u00edraj\u00edc\u00ed zuby ozuben\u00e9 spojky p\u0159\u00edstavn\u00edho port\u00e1lov\u00e9ho je\u0159\u00e1bu jsou n\u00e1chyln\u00e9 k opot\u0159eben\u00ed a mohou se vyskytnout i probl\u00e9my, jako jsou zlomen\u00e9 zuby a hlodav\u00e9 zuby. Pokud se pou\u017eije p\u0159\u00edstavn\u00ed port\u00e1lov\u00fd je\u0159\u00e1b elastomerov\u00e1 spojka \u0161vestkov\u00fd kv\u011bt, je elastomer \u0161vestkov\u00fd kv\u011bt n\u00e1chyln\u00fd k opot\u0159eben\u00ed, zrychlen\u00e9mu st\u00e1rnut\u00ed nebo \u00fanavov\u00e9mu prask\u00e1n\u00ed b\u011bhem dlouhodob\u00e9ho provozu je\u0159\u00e1bu. P\u0159i dlouhodob\u00e9m pou\u017e\u00edv\u00e1n\u00ed p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f dojde tak\u00e9 k siln\u00e9mu opot\u0159eben\u00ed elastick\u00e9ho krou\u017eku pru\u017en\u00e9 \u010depov\u00e9 spojky a \u010dep lze snadno ztratit, tak\u017ee se zv\u00fd\u0161\u00ed hluk a vibrace p\u0159en\u00e1\u0161en\u00e9 spojkou b\u011bhem p\u0159enosu, co\u017e ovlivn\u00ed norm\u00e1ln\u00ed provoz za\u0159\u00edzen\u00ed. Krom\u011b toho se protikusov\u00e9 \u0161rouby spojky tak\u00e9 zlom\u00ed a zp\u016fsob\u00ed mechanick\u00e9 selh\u00e1n\u00ed.<\/p>\n\n\n\n<p><strong>N\u00e1vod na \u00fadr\u017ebu 3<\/strong><\/p>\n\n\n\n<p>P\u0159i dlouhodob\u00e9m provozu ozuben\u00e9 spojky p\u0159\u00edstavn\u00edho port\u00e1lov\u00e9ho je\u0159\u00e1bu budou vnit\u0159n\u00ed a vn\u011bj\u0161\u00ed zuby podl\u00e9hat ur\u010dit\u00e9mu opot\u0159eben\u00ed, proto je nutn\u00e9 prov\u00e1d\u011bt dobr\u00e9 maz\u00e1n\u00ed a pravidelnou \u00fadr\u017ebu. Sou\u010dasn\u011b by m\u011bla b\u00fdt pravideln\u011b kontrolov\u00e1na elastomerov\u00e1 spojka, zejm\u00e9na pou\u017eit\u00ed pru\u017en\u00fdch prvk\u016f a \u010dep\u016f. Jakmile se zjist\u00ed, \u017ee jsou elastick\u00e9 prvky po\u0161kozen\u00e9, je t\u0159eba je v\u010das vym\u011bnit. <\/p>\n\n\n\n<p>P\u0159i pravideln\u00fdch kontrol\u00e1ch je t\u0159eba v\u011bnovat pozornost tak\u00e9 pravideln\u00e9mu dotahov\u00e1n\u00ed \u0161roub\u016f, aby uvoln\u011bn\u00e9 \u0161rouby neovliv\u0148ovaly norm\u00e1ln\u00ed provoz za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n<p>V procesu instalace spojky mus\u00ed b\u00fdt vyrovn\u00e1n\u00ed opraveno, aby se zabr\u00e1nilo sn\u00ed\u017een\u00ed \u017eivotnosti za\u0159\u00edzen\u00ed v d\u016fsledku nespr\u00e1vn\u00fdch kombinac\u00ed metod. <\/p>\n\n\n\n<p>Sou\u010dasn\u011b by se m\u011blo pravideln\u011b dopl\u0148ovat mazivo, aby se zajistilo, \u017ee mezera v z\u00e1b\u011bru mezi vnit\u0159n\u00edm a vn\u011bj\u0161\u00edm ozuben\u00edm m\u00e1 dobr\u00fd mazac\u00ed v\u00fdkon a sni\u017euje opot\u0159eben\u00ed. Je t\u0159eba v\u011bnovat pozornost hladk\u00e9mu a pomal\u00e9mu chodu je\u0159\u00e1bu. <\/p>\n\n\n\n<p>B\u011bhem provozu spojky p\u0159\u00edstavn\u00edho port\u00e1lov\u00e9ho je\u0159\u00e1bu by m\u011bly b\u00fdt pos\u00edleny pravideln\u00e9 kontroly. V p\u0159\u00edpad\u011b abnorm\u00e1ln\u00edch podm\u00ednek, jako jsou vibrace nebo nadm\u011brn\u00fd abnorm\u00e1ln\u00ed hluk, je nutn\u00e9 v\u010das zastavit kv\u016fli kontrole a \u00fadr\u017eb\u011b.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"harbour-portal-cranes-failure-4-brake-failure\">Porucha p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f 4: Selh\u00e1n\u00ed brzd<\/h2>\n\n\n\n<p>Ve skute\u010dn\u00e9 v\u00fdrob\u011b, brzdy p\u0159\u00edstavn\u00edho port\u00e1lov\u00e9ho je\u0159\u00e1bu nebo ve skute\u010dn\u00e9 v\u00fdrob\u011b brzdy port\u00e1lov\u00fdch je\u0159\u00e1b\u016f \u010dasto selh\u00e1vaj\u00ed, v\u010detn\u011b:<\/p>\n\n\n\n<ul>\n<li>Brzdov\u00e9 desti\u010dky jsou abnorm\u00e1ln\u011b opot\u0159ebovan\u00e9, co\u017e sni\u017euje \u017eivotnost brzdov\u00fdch desti\u010dek a vy\u017eaduje \u010dastou v\u00fdm\u011bnu\uff1b<\/li>\n\n\n\n<li>Brzdn\u00e1 v\u016fle p\u0159ekra\u010duje ur\u010ditou normu, \u010d\u00edm\u017e se sni\u017euje brzdn\u00fd \u00fa\u010dinek a dokonce i nemo\u017enost brzdit\uff1b<\/li>\n\n\n\n<li>Je snadn\u00e9 dos\u00e1hnout toho, aby teplota brzdov\u00e9ho kola b\u011bhem brzd\u011bn\u00ed p\u0159ekro\u010dila ur\u010ditou normu, a pot\u00e9 se elastick\u00fd pry\u017eov\u00fd krou\u017eek spojovac\u00edho \u010depu rozpust\u00ed a st\u00e1rne pod vlivem vysokoteplotn\u00edch faktor\u016f\uff1b<\/li>\n\n\n\n<li>Klouby brzdov\u00fdch ramen jsou zad\u0159en\u00e9 a brzdy nelze plynule natahovat. Tento druh jevu zp\u016fsob\u00ed, \u017ee v\u00fdroba zved\u00e1n\u00ed, nakl\u00e1d\u00e1n\u00ed a vykl\u00e1d\u00e1n\u00ed bude \u010delit velk\u00fdm bezpe\u010dnostn\u00edm rizik\u016fm. <\/li>\n\n\n\n<li>Brzdov\u00e9 desti\u010dky jsou abnorm\u00e1ln\u011b opot\u0159ebovan\u00e9, co\u017e sni\u017euje \u017eivotnost brzdov\u00fdch desti\u010dek a vy\u017eaduje \u010dastou v\u00fdm\u011bnu\uff1b<\/li>\n\n\n\n<li>Brzdn\u00e1 v\u016fle p\u0159ekra\u010duje ur\u010ditou normu, \u010d\u00edm\u017e se sni\u017euje brzdn\u00fd \u00fa\u010dinek a dokonce i nemo\u017enost brzdit\uff1b<\/li>\n\n\n\n<li>Je snadn\u00e9 dos\u00e1hnout toho, aby teplota brzdov\u00e9ho kola b\u011bhem brzd\u011bn\u00ed p\u0159ekro\u010dila ur\u010ditou normu, a pot\u00e9 se elastick\u00fd pry\u017eov\u00fd krou\u017eek spojovac\u00edho \u010depu rozpust\u00ed a st\u00e1rne pod vlivem vysokoteplotn\u00edch faktor\u016f\uff1b<\/li>\n\n\n\n<li>Klouby brzdov\u00fdch ramen jsou zad\u0159en\u00e9 a brzdy nelze plynule natahovat. Tento druh jevu zp\u016fsob\u00ed, \u017ee v\u00fdroba zved\u00e1n\u00ed, nakl\u00e1d\u00e1n\u00ed a vykl\u00e1d\u00e1n\u00ed bude \u010delit velk\u00fdm bezpe\u010dnostn\u00edm rizik\u016fm.<\/li>\n<\/ul>\n\n\n\n<p><strong>N\u00e1vod na \u00fadr\u017ebu 4<\/strong><\/p>\n\n\n\n<p>Aby se \u00fa\u010dinn\u011b p\u0159ede\u0161lo selh\u00e1n\u00ed brzd, je nutn\u00e9 pravideln\u011b kontrolovat souvisej\u00edc\u00ed za\u0159\u00edzen\u00ed a sou\u010dasn\u011b v\u011bnovat pozornost n\u00e1sleduj\u00edc\u00edm 4 probl\u00e9m\u016fm\uff1a<\/p>\n\n\n\n<ul>\n<li>D\u016fraz je kladen na kontrolu, zda nen\u00ed \u010d\u00e1st z\u00e1v\u011bsu h\u0159\u00eddele \u010depu siln\u011b opot\u0159eben\u00e1 nebo zaseknut\u00e1 a zda je p\u0159\u00edslu\u0161n\u00e1 poloha p\u0159ipojen\u00ed uvoln\u011bn\u00e1\uff1b<\/li>\n\n\n\n<li>Komplexn\u011b kontrolujte a v\u011bdecky ov\u011b\u0159ujte, zda mezera mezi brzdov\u00fdmi desti\u010dkami a brzdov\u00fdmi koly odpov\u00edd\u00e1 standardu\uff1b<\/li>\n\n\n\n<li>Zkontrolujte, zda je hydraulick\u00fd syst\u00e9m v norm\u00e1ln\u00edm provozn\u00edm stavu\uff1b<\/li>\n\n\n\n<li>Brzdov\u00e9 desti\u010dky a brzdov\u00e1 kola by m\u011bly b\u00fdt zkontrolov\u00e1ny na opot\u0159eben\u00ed a povrch by m\u011bl b\u00fdt bez ne\u010distot.<\/li>\n<\/ul>\n\n\n\n<p>Prost\u0159ednictv\u00edm v\u00fd\u0161e uveden\u00e9 kontroly lze zvl\u00e1dnout provozn\u00ed stav udr\u017eovan\u00fd brzdou. Krom\u011b toho by m\u011blo b\u00fdt pos\u00edleno maz\u00e1n\u00ed a udr\u017eov\u00e1n\u00ed polohy ka\u017ed\u00e9ho kloubu brzdy a brzdn\u00fd zdvih by m\u011bl b\u00fdt vhodn\u011b nastaven podle skute\u010dn\u00e9 situace, aby bylo zaji\u0161t\u011bno, \u017ee brzda je \u00fa\u010dinn\u00e1 a bezpe\u010dn\u00e1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"harbour-portal-cranes-failure-5-three-phase-ac-motor-failure\">Porucha p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f 5: Selh\u00e1n\u00ed t\u0159\u00edf\u00e1zov\u00e9ho st\u0159\u00eddav\u00e9ho motoru<\/h2>\n\n\n\n<p>V p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1bech hraj\u00ed roli p\u0159em\u011bny energie t\u0159\u00edf\u00e1zov\u00e9 motory na st\u0159\u00eddav\u00fd proud, kter\u00e9 mohou p\u0159em\u011bnit elektrickou energii na energii mechanickou, ale \u010dasto jsou ovlivn\u011bny r\u016fzn\u00fdmi faktory provozu za\u0159\u00edzen\u00ed a selh\u00e1vaj\u00ed.<\/p>\n\n\n\n<p>Kdy\u017e je nap\u00e1jec\u00ed nap\u011bt\u00ed p\u0159\u00edli\u0161 vysok\u00e9, budic\u00ed proud se zv\u00fd\u0161\u00ed, co\u017e zp\u016fsob\u00ed nadm\u011brn\u00e9 zah\u0159\u00edv\u00e1n\u00ed motoru. Kdy\u017e teplota oh\u0159evu p\u0159ekro\u010d\u00ed ur\u010ditou normu, po\u0161kod\u00ed se izolace motoru a zv\u00fd\u0161\u00ed se riziko poruchy. <\/p>\n\n\n\n<p>Pokud je nap\u00e1jec\u00ed nap\u011bt\u00ed p\u0159\u00edli\u0161 n\u00edzk\u00e9, elektromagnetick\u00fd moment se v\u00fdrazn\u011b sn\u00ed\u017e\u00ed. <\/p>\n\n\n\n<p>Pokud se zat\u011b\u017eovac\u00ed moment v tomto okam\u017eiku synchronn\u011b nesn\u00ed\u017e\u00ed, celkov\u00e1 rychlost rotoru bude p\u0159\u00edli\u0161 n\u00edzk\u00e1 a nadm\u011brn\u00e1 odchylka zp\u016fsob\u00ed probl\u00e9my s p\u0159et\u00ed\u017een\u00edm motoru a d\u00e1le zv\u00fd\u0161\u00ed tvorbu tepla. <\/p>\n\n\n\n<p>Pokud se tento probl\u00e9m dlouhodob\u011b nepoda\u0159\u00ed v\u010das vy\u0159e\u0161it, naru\u0161\u00ed jej vn\u011bj\u0161\u00ed vlhkostn\u00ed faktory, ovliv\u0148uj\u00edc\u00ed norm\u00e1ln\u00ed provoz t\u0159\u00edf\u00e1zov\u00e9ho st\u0159\u00eddav\u00e9ho motoru, urychl\u00ed st\u00e1rnut\u00ed izola\u010dn\u00ed vrstvy a sn\u00ed\u017e\u00ed \u017eivotnost t\u0159\u00edf\u00e1zov\u00fd st\u0159\u00eddav\u00fd motor.<\/p>\n\n\n\n<p><strong>N\u00e1vod na \u00fadr\u017ebu 5<\/strong><\/p>\n\n\n\n<p>P\u0159i ka\u017edodenn\u00ed \u00fadr\u017eb\u011b a \u00fadr\u017eb\u011b t\u0159\u00edf\u00e1zov\u00fdch st\u0159\u00eddav\u00fdch motor\u016f p\u0159\u00edstavn\u00edho port\u00e1lov\u00e9ho je\u0159\u00e1bu mus\u00ed b\u00fdt nap\u00e1jen\u00ed p\u0159edem odpojeno, aby byla zachov\u00e1na bezpe\u010dnost za\u0159\u00edzen\u00ed a obsluhy. Po ukon\u010den\u00ed provozu motoru by m\u011bla b\u00fdt provedena \u00fadr\u017eba. Je t\u0159eba poznamenat, \u017ee n\u011bkter\u00e9 \u010d\u00e1sti mohou m\u00edt podm\u00ednky vysok\u00e9 teploty. P\u0159ed prov\u00e1d\u011bn\u00edm \u00fadr\u017eby je nutn\u00e9 p\u0159im\u011b\u0159en\u011b vychladnout, aby byla zachov\u00e1na bezpe\u010dnost person\u00e1lu. Pokud je port\u00e1lov\u00fd je\u0159\u00e1b ve stavu odstaven\u00ed na dlouhou dobu, aby se p\u0159ede\u0161lo selh\u00e1n\u00ed motoru, mus\u00ed b\u00fdt obvykle provozov\u00e1n alespo\u0148 jednou za m\u011bs\u00edc, aby bylo zaji\u0161t\u011bno, \u017ee oh\u0159\u00edva\u010d motoru z\u016fstane v norm\u00e1ln\u00edm provozn\u00edm stavu, a zkontrolujte motor, zda nejsou po\u0161kozen\u00e9 d\u00edly. v\u010das, aby nedo\u0161lo k po\u0161kozen\u00ed na za\u010d\u00e1tku pozd\u011bj\u0161\u00edho pou\u017e\u00edv\u00e1n\u00ed motoru. <\/p>\n\n\n\n<p>B\u011bhem pou\u017e\u00edv\u00e1n\u00ed motoru by m\u011bly b\u00fdt dynamicky sledov\u00e1ny amplituda a frekvence z\u00e1pachu, zvuku a vibrac\u00ed p\u0159i provozu motoru. Jakmile je zji\u0161t\u011bn z\u00e1pach sp\u00e1leniny, je nutn\u00e9 v\u010das zastavit pr\u00e1ci a p\u0159\u00edsn\u011b zkontrolovat vinut\u00ed a dal\u0161\u00ed \u010d\u00e1sti, aby nedo\u0161lo ke sp\u00e1len\u00ed kl\u00ed\u010dov\u00fdch \u010d\u00e1st\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"harbour-portal-cranes-failure-6-abnormal-noise-at-the-hinge-point-of-the-boom\">Porucha p\u0159\u00edstavn\u00edho port\u00e1lov\u00e9ho je\u0159\u00e1bu 6: Abnorm\u00e1ln\u00ed hluk v bod\u011b z\u00e1v\u011bsu v\u00fdlo\u017en\u00edku<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"582\" height=\"306\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2024\/12\/Abnormal-noise-at-the-hinge-point-of-the-boom.jpg\" alt=\"Abnorm\u00e1ln\u00ed hluk v bod\u011b z\u00e1v\u011bsu v\u00fdlo\u017en\u00edku\" class=\"wp-image-10312\"\/><\/figure><\/div>\n\n\n<p>P\u0159i \u010dast\u00fdch operac\u00edch, kv\u016fli velk\u00e9 s\u00edle n\u00e1razu, p\u0159\u00edstavn\u00ed port\u00e1lov\u00e9 je\u0159\u00e1by \u010dasto st\u00e1rnou a po\u0161kozuj\u00ed \u010d\u00e1sti, a pak se p\u0159i vylamov\u00e1n\u00ed objevuj\u00ed abnorm\u00e1ln\u00ed zvuky.<br>Nap\u0159\u00edklad p\u0159i provozu p\u0159\u00edstavn\u00edho port\u00e1lov\u00e9ho je\u0159\u00e1bu je spodn\u00ed bod z\u00e1v\u011bsu zvedac\u00edho ramene zp\u016fsoben p\u0159\u00edtomnost\u00ed pr\u00e1\u0161kov\u00fdch nebo granulovan\u00fdch ciz\u00edch p\u0159edm\u011bt\u016f a \u0161rouby p\u0159ep\u00e1\u017eky na konci h\u0159\u00eddele jsou od\u0159\u00edznut\u00e9 nebo uvoln\u011bn\u00e9, co\u017e zp\u016fsobuje abnormality a ovliv\u0148uje norm\u00e1ln\u00ed provoz je\u0159\u00e1bu a p\u0159edstavuje ur\u010dit\u00e1 bezpe\u010dnostn\u00ed rizika.<\/p>\n\n\n\n<p><strong>N\u00e1vod na \u00fadr\u017ebu 6<\/strong><\/p>\n\n\n\n<p>P\u0159i pou\u017e\u00edv\u00e1n\u00ed p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f, aby se p\u0159ede\u0161lo abnorm\u00e1ln\u00edmu hluku a jin\u00fdm poruch\u00e1m v doln\u00edm bod\u011b z\u00e1v\u011bsu v\u00fdlo\u017en\u00edku, je nutn\u00e9 zp\u0159\u00edsnit ka\u017edodenn\u00ed kontroly, v\u010das ut\u00e1hnout \u0161rouby p\u0159ep\u00e1\u017eky h\u0159\u00eddele a vy\u010distit ciz\u00ed p\u0159edm\u011bty.<\/p>\n\n\n\n<p>Pokud m\u00e1 p\u0159\u00edstavn\u00ed port\u00e1lov\u00fd je\u0159\u00e1b abnorm\u00e1ln\u00ed hluk, lze nejprve prov\u00e9st v\u00fdpo\u010det a anal\u00fdzu s\u00edly a pot\u00e9 lze vym\u011bnit valiv\u00e9 lo\u017eisko. B\u011bhem tohoto obdob\u00ed je t\u0159eba poznamenat:<\/p>\n\n\n\n<ul>\n<li>Nejprve udr\u017eujte amplitudu je\u0159\u00e1bu v rovnov\u00e1\u017en\u00e9m bod\u011b asi 25 m a \u017eiv\u00e1 protiz\u00e1va\u017e\u00ed v\u00fdlo\u017en\u00edkov\u00e9ho syst\u00e9mu se vede p\u0159es 2 ocelov\u00e1 lana (\u03a632 mm), kter\u00e1 jsou pomoc\u00ed \u0159et\u011bzu t\u011bsn\u011b spojena se zvedac\u00edm otvorem za r\u00e1mem ryb\u00ed kosti. kladkostroj a se\u0159izuje se tlak v\u00fdlo\u017en\u00edku a h\u0159\u00eddele z\u00e1v\u011bsu;&nbsp;<\/li>\n\n\n\n<li>P\u0159ed spodn\u00edm rohem v\u00fdlo\u017en\u00edku je ocelov\u00fd plech (20 mm) p\u0159iva\u0159en k podp\u011b\u0159e a ocelov\u00fd plech a svisl\u00e1 \u017eebra jsou p\u0159iva\u0159eny ve spodn\u00edm rohu v\u00fdlo\u017en\u00edku sm\u011brem nahoru asi 60 mm, aby byl zachov\u00e1n relativn\u00ed vztah s podpora; Um\u00edst\u011bte 25t zved\u00e1k nad procesn\u00ed podporu pro podporu.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"in-summary\">V souhrnu<\/h2>\n\n\n\n<p>V procesu nakl\u00e1d\u00e1n\u00ed a vykl\u00e1d\u00e1n\u00ed n\u00e1kladu v p\u0159\u00edstavech a termin\u00e1lech hraj\u00ed p\u0159\u00edstavn\u00ed port\u00e1lov\u00e9 je\u0159\u00e1by d\u016fle\u017eitou roli, ale jejich provozn\u00ed prost\u0159ed\u00ed m\u00e1 vysokou vlhkost vzduchu a pra\u0161nost a \u010dasto jsou ovlivn\u011bny vn\u011bj\u0161\u00edmi faktory prost\u0159ed\u00ed a selh\u00e1vaj\u00ed. Ve spojen\u00ed s nepravideln\u00fdm provozem person\u00e1lu bude za\u0159\u00edzen\u00ed v\u00e1\u017en\u011b po\u0161kozeno. Proto by strana spr\u00e1vy za\u0159\u00edzen\u00ed m\u011bla komplexn\u011b analyzovat b\u011b\u017en\u00e9 poruchy p\u0159\u00edstavn\u00edch port\u00e1lov\u00fdch je\u0159\u00e1b\u016f b\u011bhem pou\u017e\u00edv\u00e1n\u00ed, formulovat c\u00edlen\u00e9 pl\u00e1ny \u00fadr\u017eby, p\u0159ij\u00edmat \u00fa\u010dinn\u00e1 opat\u0159en\u00ed pro \u00fadr\u017ebu a \u00fadr\u017ebu a kontrolovat provozn\u00ed stav komponent za\u0159\u00edzen\u00ed v\u010das, aby se sn\u00ed\u017eila pravd\u011bpodobnost selh\u00e1n\u00ed za\u0159\u00edzen\u00ed a zajistilo bezpe\u010dn\u00fd, efektivn\u00ed a spolehliv\u00fd provoz za\u0159\u00edzen\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"S neust\u00e1l\u00fdm roz\u0161i\u0159ov\u00e1n\u00edm rozsahu v\u00fdstavby p\u0159\u00edstav\u016f, dok\u016f atd. se den ode dne zvy\u0161uje i rozsah pou\u017eit\u00ed port\u00e1lov\u00fdch je\u0159\u00e1b\u016f v p\u0159\u00edstavn\u00edm provozu. Aby bylo mo\u017en\u00e9 pln\u011b vyu\u017e\u00edt funkce za\u0159\u00edzen\u00ed a zachovat bezpe\u010dnost a spolehlivost provozu, je nutn\u00e9 pos\u00edlit \u00fadr\u017ebu a [\u2026]","protected":false},"featured_media":10258,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[197],"posts_tag":[309],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/10369"}],"collection":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":3,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/10369\/revisions"}],"predecessor-version":[{"id":10384,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/10369\/revisions\/10384"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/media\/10258"}],"wp:attachment":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/media?parent=10369"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/posts_category?post=10369"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/posts_tag?post=10369"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}