{"id":5319,"date":"2024-11-11T15:56:39","date_gmt":"2024-11-11T07:56:39","guid":{"rendered":"https:\/\/www.sevencrane.com\/?p=5319"},"modified":"2024-11-11T15:56:43","modified_gmt":"2024-11-11T07:56:43","slug":"causes-and-solutions-for-brake-failure-in-bridge-cranes","status":"publish","type":"post","link":"https:\/\/www.sevencrane.com\/fi\/causes-and-solutions-for-brake-failure-in-bridge-cranes\/","title":{"rendered":"Siltanostureiden jarruvikojen syyt ja ratkaisut"},"content":{"rendered":"<p>Teollisissa olosuhteissa siltanostureissa esiintyy ajoittain jarruvikoja, jotka voivat johtaa vaaralliseen &quot;kuorman luistamiseen&quot;. T\u00e4m\u00e4 tapahtuu, kun nosturin k\u00e4ytt\u00e4j\u00e4 lopettaa kuorman nostamisen tai laskemisen, mutta kuorma jatkaa laskuaan, usein yli sallitun rajan v\/100 (miss\u00e4 v on nimellinen nostonopeus). T\u00e4m\u00e4 aiheuttaa vakavia riskej\u00e4, jos kuorma liukuu kokonaan maahan. Toinen ongelma ilmenee, kun jarru ei vapaudu, mik\u00e4 rajoittaa nostomekanismia ja est\u00e4\u00e4 nosturia saavuttamasta t\u00e4ytt\u00e4 nostokyky\u00e4\u00e4n.<\/p>\n\n\n\n<p><strong>Ep\u00e4t\u00e4ydellisen jarrutuksen syyt<\/strong><\/p>\n\n\n\n<p>Ep\u00e4t\u00e4ydellinen jarrutus, joka mahdollistaa kuorman luistamisen, voi johtua useista tekij\u00f6ist\u00e4:<\/p>\n\n\n\n<ul>\n<li>Kuluminen: Toistuva k\u00e4ytt\u00f6 voi aiheuttaa osien, kuten tappien, reikien ja jarrupalojen, kulumista, mik\u00e4 johtaa vaihteluihin jarruvarren asennossa ja jarrutusmomentin v\u00e4henemiseen.<\/li>\n\n\n\n<li>Jousiongelmat: Heikot tai v\u00e4\u00e4rin s\u00e4\u00e4detyt p\u00e4\u00e4jouset v\u00e4hent\u00e4v\u00e4t jarrutusvoimaa, usein huonon materiaalin laadun tai v\u00e4symisen vuoksi.<\/li>\n\n\n\n<li>Virheellinen kohdistus: Jarrupy\u00f6r\u00e4n s\u00e4teitt\u00e4inen suuntausvirhe voi johtaa ep\u00e4keskisyyteen, mik\u00e4 heikent\u00e4\u00e4 jarrutustehoa.<\/li>\n\n\n\n<li>Ep\u00e4tasainen tyynyn v\u00e4lys: Ep\u00e4tasainen kosketus jarrupalojen ja jarrupy\u00f6r\u00e4n v\u00e4lill\u00e4 v\u00e4hent\u00e4\u00e4 v\u00e4\u00e4nt\u00f6momenttia, usein asennusep\u00e4tarkkuuden tai l\u00f6ystyneiden pulttien vuoksi.<\/li>\n\n\n\n<li>Tukkeutuneet pitk\u00e4tahtiset jarrut: Vastapainon alla oleva tukimateriaali voi v\u00e4hent\u00e4\u00e4 jarrutusmomenttia.<\/li>\n<\/ul>\n\n\n\n<p><strong>Ratkaisut ep\u00e4t\u00e4ydelliseen jarrutukseen<\/strong><\/p>\n\n\n\n<p>Luotettavan jarrutuksen palauttamiseksi suositellaan seuraavia vaiheita:<\/p>\n\n\n\n<ul>\n<li>Vaihda kuluneet jarrun osat ja poista kaikki esteet.<\/li>\n\n\n\n<li>Puhdista jarrupy\u00f6r\u00e4 ja jarrupalat kerosiinilla tai bensiinill\u00e4 ep\u00e4puhtauksien poistamiseksi.<\/li>\n\n\n\n<li>Kohdista tai vaihda v\u00e4\u00e4rin kohdistetut jarrupy\u00f6r\u00e4t.<\/li>\n\n\n\n<li>S\u00e4\u00e4d\u00e4 ruuveja ja apujousia tasaisen tyynyn v\u00e4lyksen saamiseksi.<\/li>\n\n\n\n<li>Asenna jarrut uudelleen tarkasti varmistaaksesi oikean kohdistuksen ja poista lis\u00e4tty tuki vastapainojen alla.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/d3fnmw4lwrx8lm.cloudfront.net\/wp-content\/uploads\/2024\/05\/28110643\/85t-overhead-crane.jpg\" alt=\"85t nosturi\" class=\"wp-image-5104 lazyload\"\/><noscript><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/d3fnmw4lwrx8lm.cloudfront.net\/wp-content\/uploads\/2024\/05\/28110643\/85t-overhead-crane.jpg\" alt=\"85t nosturi\" class=\"wp-image-5104 lazyload\" srcset=\"https:\/\/d3fnmw4lwrx8lm.cloudfront.net\/wp-content\/uploads\/2024\/05\/28110643\/85t-overhead-crane.jpg 800w, https:\/\/d3fnmw4lwrx8lm.cloudfront.net\/wp-content\/uploads\/2024\/05\/28110643\/85t-overhead-crane-300x225.jpg 300w, https:\/\/d3fnmw4lwrx8lm.cloudfront.net\/wp-content\/uploads\/2024\/05\/28110643\/85t-overhead-crane-768x576.jpg 768w, https:\/\/d3fnmw4lwrx8lm.cloudfront.net\/wp-content\/uploads\/2024\/05\/28110643\/85t-overhead-crane-16x12.jpg 16w, https:\/\/d3fnmw4lwrx8lm.cloudfront.net\/wp-content\/uploads\/2024\/05\/28110643\/85t-overhead-crane-428x321.jpg 428w, https:\/\/d3fnmw4lwrx8lm.cloudfront.net\/wp-content\/uploads\/2024\/05\/28110643\/85t-overhead-crane-345x258.jpg 345w, https:\/\/d3fnmw4lwrx8lm.cloudfront.net\/wp-content\/uploads\/2024\/05\/28110643\/85t-overhead-crane-253x190.jpg 253w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/noscript><\/figure>\n\n\n\n<p><strong>Jarrujen lukkiutumisen syyt<\/strong><\/p>\n\n\n\n<p>Kun jarrut eiv\u00e4t vapaudu, yleisi\u00e4 syit\u00e4 ovat:<\/p>\n\n\n\n<ul>\n<li>S\u00e4hk\u00f6magneettivirhe: Irrotettu k\u00e4\u00e4mi pys\u00e4ytt\u00e4\u00e4 magneetin, mik\u00e4 est\u00e4\u00e4 jarrun vapautumisen ja aiheuttaa voimakkaan moottori\u00e4\u00e4nen.<\/li>\n\n\n\n<li>Taipuneet jarrutangot: V\u00e4\u00e4rin kohdistetut tangot voivat est\u00e4\u00e4 liikkeen, jolloin jarru pysyy kiinni.<\/li>\n\n\n\n<li>Mekaaniset esteet: Jarrumekanismin osat voivat takertua ja est\u00e4\u00e4 vapaan liikkeen.<\/li>\n<\/ul>\n\n\n\n<p><strong>Ratkaisut jarrujen lukitsemiseen<\/strong><\/p>\n\n\n\n<p>Jarrujen lukitusongelmien ratkaiseminen:<\/p>\n\n\n\n<ul>\n<li>Vaihda tai liit\u00e4 vialliset kelat uudelleen.<\/li>\n\n\n\n<li>Suorista tai vaihda taivutetut tangot.<\/li>\n\n\n\n<li>Tunnista ja poista esteet sujuvan toiminnan varmistamiseksi.<\/li>\n<\/ul>\n\n\n\n<p>N\u00e4iden yleisten jarruongelmien ratkaiseminen auttaa lis\u00e4\u00e4m\u00e4\u00e4n turvallisuutta ja tehokkuutta <a href=\"https:\/\/www.sevencrane.com\/fi\/pro_cat\/overhead-crane\/\">siltanosturit <\/a>materiaalink\u00e4sittelyn riskit minimoimalla.<\/p>","protected":false},"excerpt":{"rendered":"<p>Teollisissa olosuhteissa siltanostureissa esiintyy ajoittain jarruvikoja, jotka voivat johtaa vaaralliseen &quot;kuorman luistamiseen&quot;. T\u00e4m\u00e4 tapahtuu, kun nosturin k\u00e4ytt\u00e4j\u00e4 lopettaa kuorman nostamisen tai laskemisen, mutta kuorma jatkaa laskuaan, usein yli sallitun rajan v\/100 (miss\u00e4 v on nimellinen nostonopeus). T\u00e4m\u00e4 aiheuttaa vakavia riskej\u00e4\u2026<\/p>","protected":false},"author":2,"featured_media":4264,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Causes and Solutions for Brake Failure in Bridge Cranes<\/title>\n<meta name=\"description\" content=\"In industrial settings, bridge cranes occasionally experience brake failures, which can lead to the dangerous phenomenon of \u201cload slipping.\u201d\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sevencrane.com\/fi\/causes-and-solutions-for-brake-failure-in-bridge-cranes\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" 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