{"id":4564,"date":"2019-05-06T13:52:12","date_gmt":"2019-05-06T05:52:12","guid":{"rendered":"http:\/\/www.jxscmachine.com\/?post_type=new&#038;p=4564"},"modified":"2019-09-24T15:16:13","modified_gmt":"2019-09-24T07:16:13","slug":"diagnostic-des-defauts-dun-crible-vibrant","status":"publish","type":"new","link":"https:\/\/www.jxscmachine.com\/fr\/new\/vibrating-screen-fault-diagnose\/","title":{"rendered":"Diagnostic des d\u00e9fauts des cribles vibrants"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"font-size: 18pt;\"><strong>Que faut-il savoir avant la rupture d'une traverse de crible vibrant ?<\/strong><\/span><\/p>\n<p>Les <strong>\u00e9cran vibrant<\/strong> est le type de crible le plus utilis\u00e9 dans le traitement des agr\u00e9gats, le traitement du charbon, les usines de traitement des minerais, la gestion des r\u00e9sidus, le lavage et le calibrage. Le crible vibrant inclin\u00e9 est g\u00e9n\u00e9ralement \u00e9quip\u00e9 de deux, trois ou plusieurs \u00e9tages. Que doit savoir l'op\u00e9rateur d'une machine avant qu'une panne ne se produise ? Commen\u00e7ons par la traverse. <a href=\"https:\/\/www.jxscmachine.com\/fr\/classer\/ecran-vibrant\/\"><span style=\"color: #008080;\">\u00e9cran vibrant pour la vente<\/span><\/a><\/p>\n<h2>1 Structure et principe de fonctionnement<\/h2>\n<p>Les principales pi\u00e8ces sont l'entra\u00eenement, le crible, l'excitateur de vibrations, le pare-chocs, la transmission, le ressort et le panneau lat\u00e9ral.<br \/>\nLa traverse est le composant principal du corps de l'\u00e9cran et est constitu\u00e9e d'un tube d'acier rectangulaire creux. La couche de caoutchouc de la surface ext\u00e9rieure de la poutre peut l'emp\u00eacher de s'\u00e9roder et peut r\u00e9duire efficacement le bruit. La fissure de la traverse du crible vibrant qui vient d'\u00eatre mis en production montre que le probl\u00e8me existe dans le corps du crible.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4565\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/05\/vibrating-screen-structure.jpg\" alt=\"structure du crible vibrant\" width=\"446\" height=\"415\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/05\/vibrating-screen-structure.jpg 446w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/05\/vibrating-screen-structure-300x279.jpg 300w\" sizes=\"auto, (max-width: 446px) 100vw, 446px\" \/><\/p>\n<h2>2 Diagnostic de l'erreur<\/h2>\n<h3>2.1 D\u00e9formation de l'arbre de liaison entre les deux excitatrices<\/h3>\n<p>Si l'arbre reliant les deux excitateurs ne fonctionne pas correctement, l'un des excitateurs est en avance ou en retard, ce qui entra\u00eene une vibration asynchrone et, par cons\u00e9quent, une force non uniforme sur les c\u00f4t\u00e9s gauche et droit qui nuit \u00e0 la poutre transversale.<br \/>\nMesures d'adaptation : v\u00e9rifier la d\u00e9viation aux deux extr\u00e9mit\u00e9s de l'arbre de connexion, ajuster ou remplacer l'arbre.<\/p>\n<h3>2.2 Le probl\u00e8me de l'excitateur propre<\/h3>\n<p>Il est pr\u00e9f\u00e9rable de ne pas utiliser deux excitateurs provenant de deux fournisseurs diff\u00e9rents, afin d'\u00e9viter les probl\u00e8mes de d\u00e9viation des excitateurs.<\/p>\n<h3>2.3 Alimentation non uniforme, charge d\u00e9s\u00e9quilibr\u00e9e<\/h3>\n<p>Une charge d\u00e9s\u00e9quilibr\u00e9e fait que la diff\u00e9rence d'angle entre les deux c\u00f4t\u00e9s est surdimensionn\u00e9e, ce qui entra\u00eene l'usure et la rupture pr\u00e9matur\u00e9e de la poutre transversale.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4566\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/05\/vibrating-screen-application.jpg\" alt=\"application de l&#039;\u00e9cran vibrant\" width=\"554\" height=\"312\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/05\/vibrating-screen-application.jpg 554w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/05\/vibrating-screen-application-300x169.jpg 300w\" sizes=\"auto, (max-width: 554px) 100vw, 554px\" \/><\/p>\n<h3>2.4 Force d'impact importante de l'alimentation<\/h3>\n<p>La forte chute de la rainure d'alimentation provoque un impact important qui endommage directement la poutre transversale. Parall\u00e8lement, la force d'impact excessive provoque \u00e9galement des vibrations qui peuvent avoir une influence sur les performances.<br \/>\nApproches d'adaptation : ajout d'une plaque d'appui au milieu de la rainure du mat\u00e9riau, sous condition de non-blocage, minimisation de la hauteur de chute ainsi que de la force d'impact.<\/p>\n<h3>2.5 Surcharge<\/h3>\n<p>En raison d'une mauvaise configuration de l'\u00e9quipement, certains cribles fonctionnent longtemps en surcharge, les effets de criblage et de dissociation sont amoindris, et les ressorts et les traverses se cassent facilement.<br \/>\nM\u00e9thodes d'adaptation : il est recommand\u00e9 d'agrandir le trou du tamis ou le joint du tamis. Pour les cribles \u00e0 vibrations horizontales, il convient d'augmenter la hauteur d'entr\u00e9e de l'alimentation, d'accro\u00eetre le volume du flux de mat\u00e9riau afin d'augmenter la capacit\u00e9 de traitement.<\/p>\n<h3>2.6 Desserrage de la plaque de tamisage<\/h3>\n<p>La plaque de tamisage desserr\u00e9e affecte directement la poutre transversale et modifie \u00e9galement la fr\u00e9quence du tamisage, ce qui peut faire approcher la vitesse de rotation du point critique et endommager gravement la machine.<br \/>\nMesures d'adaptation : v\u00e9rifier r\u00e9guli\u00e8rement le plateau et la base du tamis, resserrer les boulons et remplacer les pi\u00e8ces us\u00e9es du tamis.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4567\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/05\/vibrating-screen-machine.jpg\" alt=\"machine \u00e0 tamis vibrant\" width=\"554\" height=\"310\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/05\/vibrating-screen-machine.jpg 554w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/05\/vibrating-screen-machine-300x168.jpg 300w\" sizes=\"auto, (max-width: 554px) 100vw, 554px\" \/><\/p>\n<h3>2.7 La qualit\u00e9 de la traverse<\/h3>\n<p>La qualit\u00e9 de la traverse est \u00e9troitement li\u00e9e au processus de soudage et \u00e0 la trempe apr\u00e8s soudage. Si la contrainte de soudage n'est pas \u00e9limin\u00e9e, il se produit facilement une fracture \u00e0 l'endroit de la soudure.<br \/>\nL'analyse des causes de la rupture de la poutre transversale du crible vibrant mentionn\u00e9e ci-dessus montre qu'\u00e0 l'exception d'une petite partie due \u00e0 la qualit\u00e9 intrins\u00e8que, la plupart des causes sont li\u00e9es \u00e0 l'exploitation et \u00e0 la maintenance. Sur le site de production, il est donc n\u00e9cessaire de bien conna\u00eetre le fonctionnement et la maintenance pour garantir la s\u00e9curit\u00e9 et l'efficacit\u00e9.<\/p>","protected":false},"excerpt":{"rendered":"<p>Que faut-il savoir avant la rupture de la traverse d'un crible vibrant ? Le crible vibrant est le type de crible le plus utilis\u00e9 dans le traitement des agr\u00e9gats, le traitement du charbon, les usines de traitement des minerais, la gestion des r\u00e9sidus, le lavage et le calibrage. Le crible vibrant inclin\u00e9 est g\u00e9n\u00e9ralement \u00e9quip\u00e9 de deux, trois ou plusieurs \u00e9tages. Que faut-il ... <a href=\"https:\/\/www.jxscmachine.com\/fr\/new\/vibrating-screen-fault-diagnose\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Diagnostic des d\u00e9fauts des cribles vibrants<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":4567,"parent":0,"menu_order":331,"comment_status":"open","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[],"tags":[],"class_list":["post-4564","new","type-new","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vibrating Screen Fault Diagnose - JXSC Machine<\/title>\n<meta name=\"description\" content=\"Vibrating Screen Fault Diagnose, what should every machine operator know before the fault will occur? 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