{"id":8514,"date":"2025-06-25T08:51:52","date_gmt":"2025-06-25T08:51:52","guid":{"rendered":"https:\/\/www.kscranegroup.com\/?post_type=posts&#038;p=8514"},"modified":"2025-06-25T08:51:55","modified_gmt":"2025-06-25T08:51:55","slug":"overhead-crane-longitudinal-impact-force","status":"publish","type":"posts","link":"https:\/\/www.kscranegroup.com\/cs\/posts\/overhead-crane-longitudinal-impact-force\/","title":{"rendered":"Pod\u00e9ln\u00e1 n\u00e1razov\u00e1 s\u00edla mostov\u00e9ho je\u0159\u00e1bu: V\u00fdpo\u010dtov\u00e9 metody pro zaji\u0161t\u011bn\u00ed bezpe\u010dnosti v\u00fdroby"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Obsah<\/p><nav><ul><li><a href=\"#overhead-crane-longitudinal-impact-force-formula\">Vzorec pro v\u00fdpo\u010det pod\u00e9ln\u00e9 n\u00e1razov\u00e9 s\u00edly mostov\u00e9ho je\u0159\u00e1bu:\u00a0<\/a><\/li><li><a href=\"#overhead-crane-longitudinal-impact-force-calculation-case\">P\u0159\u00edpad v\u00fdpo\u010dtu pod\u00e9ln\u00e9 n\u00e1razov\u00e9 s\u00edly mostov\u00e9ho je\u0159\u00e1bu:\u00a0<\/a><\/li><li><a href=\"#faq\">FAQ<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>P\u0159i n\u00e1vrhu za\u0159\u00edzen\u00ed je velmi d\u016fle\u017eit\u00e9 zohlednit pod\u00e9ln\u00e9 n\u00e1razov\u00e9 s\u00edly mostov\u00e9ho je\u0159\u00e1bu, proto\u017ee to m\u00e1 p\u0159\u00edm\u00fd vliv na bezpe\u010dnost a dlouhodobou stabilitu konstrukce za\u0159\u00edzen\u00ed. Zejm\u00e9na u mostov\u00fdch je\u0159\u00e1b\u016f (nap\u0159. jednonosn\u00edkov\u00fdch, dvounosn\u00edkov\u00fdch je\u0159\u00e1b\u016f) a dal\u0161\u00edch velk\u00fdch za\u0159\u00edzen\u00ed projektanti obvykle p\u0159edv\u00eddaj\u00ed mo\u017en\u00e9 n\u00e1razy a zm\u011bny zat\u00ed\u017een\u00ed b\u011bhem provozu je\u0159\u00e1bu a optimalizuj\u00ed konstrukci za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2500\" height=\"1663\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2025\/06\/Overhead-Crane-Longitudinal-Impact-Force.jpg\" alt=\"\" class=\"wp-image-8515\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2025\/06\/Overhead-Crane-Longitudinal-Impact-Force.jpg 2500w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2025\/06\/Overhead-Crane-Longitudinal-Impact-Force-1536x1022.jpg 1536w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2025\/06\/Overhead-Crane-Longitudinal-Impact-Force-2048x1362.jpg 2048w\" sizes=\"(max-width: 2500px) 100vw, 2500px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"overhead-crane-longitudinal-impact-force-formula\">Vzorec pro v\u00fdpo\u010det pod\u00e9ln\u00e9 n\u00e1razov\u00e9 s\u00edly mostov\u00e9ho je\u0159\u00e1bu:&nbsp;<\/h2>\n\n\n\n<p>F=\u03beGv<sub>0<\/sub><sup>2<\/sup>\/2 g \u00b7 r<sub>Q<\/sub><\/p>\n\n\n\n<ul>\n<li>F \u2014 p\u016fsob\u00edc\u00ed v most\u011b automobilov\u00e9ho bloku n\u00e1vrhov\u00e1 hodnota pod\u00e9ln\u00e9 horizont\u00e1ln\u00ed n\u00e1razov\u00e9 s\u00edly (kN)&nbsp;<\/li>\n\n\n\n<li>G \u2014 n\u00e1razov\u00e1 hmotnost t\u011bla (kN), pro m\u011bkk\u00fd h\u00e1kov\u00fd most G = G0 + 0,1Gn<\/li>\n\n\n\n<li>G<sub>0<\/sub> \u2014 celkov\u00e1 hmotnost mostu (vlastn\u00ed t\u00edha) (kN)&nbsp;<\/li>\n\n\n\n<li>Gn \u2014 jmenovit\u00e1 nosnost mostu (kN)&nbsp;<\/li>\n\n\n\n<li>proti<sub>0<\/sub> \u2014 rychlost velk\u00e9ho vozidla v okam\u017eiku sr\u00e1\u017eky, vezm\u011bte v0 = 0,5v&nbsp;<\/li>\n\n\n\n<li>v\u2014\u2014Jmenovit\u00e1 rychlost provozu velk\u00e9ho vozu (m\/s)&nbsp;<\/li>\n\n\n\n<li>g \u2014 Gravita\u010dn\u00ed zrychlen\u00ed, vezm\u011bte g=9,81 m\/s\u00b2&nbsp;<\/li>\n\n\n\n<li>s \u2014 Pojezd n\u00e1razn\u00edku (m)&nbsp;<\/li>\n\n\n\n<li>\u03be \u2014 Zohledn\u011bn\u00ed deformace pru\u017en\u00e9 tlumic\u00ed desky na podvozku automobilu a dal\u0161\u00edch p\u0159\u00edzniv\u00fdch faktor\u016f, koeficient 0,8&nbsp;<\/li>\n\n\n\n<li>r<sub>Q<\/sub> \u2014 D\u00edl\u010d\u00ed sou\u010dinitel zat\u00ed\u017een\u00ed mostu, vezm\u011bte 1,4<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"overhead-crane-longitudinal-impact-force-calculation-case\">P\u0159\u00edpad v\u00fdpo\u010dtu pod\u00e9ln\u00e9 n\u00e1razov\u00e9 s\u00edly mostov\u00e9ho je\u0159\u00e1bu:\u00a0<\/h2>\n\n\n\n<p>Pr\u016fmyslov\u00fd z\u00e1vod se dv\u011bma elektrick\u00fdmi mostov\u00fdmi je\u0159\u00e1by s nosnost\u00ed 50\/10 tun, hlavn\u00ed specifika\u010dn\u00ed parametry je\u0159\u00e1bu jsou:&nbsp;<\/p>\n\n\n\n<p>Pracovn\u00ed \u00farove\u0148 A6, rozp\u011bt\u00ed mostu S = 22,5 m, typ koleje QU80, jmenovit\u00e1 rychlost jedouc\u00edho velk\u00e9ho vozu v = 95 m\/min, celkov\u00e1 hmotnost je\u0159\u00e1bu G<sub>0<\/sub> = 65 t, hmotnost voz\u00edku g = 19,4 t, maxim\u00e1ln\u00ed tlak na kolo P = 410 kN, zdvih n\u00e1razn\u00edku s = 0,140 m, vzd\u00e1lenost od st\u0159edu n\u00e1razn\u00edku k vrcholu koleje H = 1130 m.&nbsp;<\/p>\n\n\n\n<p>Vypo\u010d\u00edtejte n\u00e1vrhovou hodnotu pod\u00e9ln\u00e9 horizont\u00e1ln\u00ed n\u00e1razov\u00e9 s\u00edly F mostn\u00edho stroje nesen\u00e9 blokem automobilu podle vzorce:<\/p>\n\n\n\n<p>G=65+0,1\u00d750=70t<\/p>\n\n\n\n<p>proti<sub>0<\/sub>=0,5\u00d795\/60=0,79 m\/s<\/p>\n\n\n\n<p>F=(0,8\u00d770\u00d79,81\u00d70,79<sup>2<\/sup>)\/(2\u00d79,81\u00d70,14)\u00d71,4=174,7 kN<\/p>\n\n\n\n<p>Pod\u00e9ln\u00e1 horizont\u00e1ln\u00ed n\u00e1razov\u00e1 s\u00edla mostov\u00e9ho je\u0159\u00e1bu p\u016fsob\u00edc\u00ed na doraz kabiny je zp\u016fsobena p\u0159edev\u0161\u00edm setrva\u010dn\u00fdmi silami generovan\u00fdmi mostov\u00fdm je\u0159\u00e1bem b\u011bhem provozu. Je to s\u00edla zp\u016fsoben\u00e1 zm\u011bnami rychlosti mostov\u00e9ho je\u0159\u00e1bu v pod\u00e9ln\u00e9m sm\u011bru (nap\u0159. zrychlen\u00ed, zpomalen\u00ed nebo n\u00e1hl\u00e9 zastaven\u00ed). Dorazy kabiny mus\u00ed b\u00fdt navr\u017eeny tak, aby byly dostate\u010dn\u011b pevn\u00e9, aby odolaly pod\u00e9ln\u00fdm n\u00e1razov\u00fdm sil\u00e1m je\u0159\u00e1bu. P\u0159i n\u00e1vrhu doraz\u016f kabiny je t\u0159eba zohlednit maxim\u00e1ln\u00ed rychlost a zrychlen\u00ed je\u0159\u00e1bu a maxim\u00e1ln\u00ed zat\u00ed\u017een\u00ed je\u0159\u00e1bu, aby se zajistilo, \u017ee v p\u0159\u00edpad\u011b kolize nebudou dorazy kabiny po\u0161kozeny ani deformov\u00e1ny.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">FAQ<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list\">\n<div id=\"faq-question-1750662163921\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Jak navrhnout kolejnicov\u00e9 spojen\u00ed a zar\u00e1\u017eky pro je\u0159\u00e1bov\u00e9 nosn\u00edky s pln\u00fdmi ocelov\u00fdmi stojinami v pr\u016fmyslov\u00fdch z\u00e1vodech?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>M\u016f\u017eete se pod\u00edvat na tento \u010dl\u00e1nek, \u300a<a href=\"http:\/\/www.chinabuilding.com.cn\/book-2661.html\" target=\"_blank\" rel=\"noopener\">P\u0159\u00edpojky je\u0159\u00e1bov\u00fdch drah a zast\u00e1vek pro automobily<\/a>\u300b<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"P\u0159i n\u00e1vrhu za\u0159\u00edzen\u00ed je velmi d\u016fle\u017eit\u00e9 zohlednit pod\u00e9ln\u00e9 n\u00e1razov\u00e9 s\u00edly mostov\u00e9ho je\u0159\u00e1bu, proto\u017ee to m\u00e1 p\u0159\u00edm\u00fd vliv na bezpe\u010dnost a dlouhodobou stabilitu konstrukce za\u0159\u00edzen\u00ed. Zejm\u00e9na u mostov\u00fdch je\u0159\u00e1b\u016f (nap\u0159. jednonosn\u00edkov\u00fdch, dvounosn\u00edkov\u00fdch je\u0159\u00e1b\u016f) a dal\u0161\u00edch velk\u00fdch za\u0159\u00edzen\u00ed konstrukt\u00e9\u0159i obvykle p\u0159edv\u00eddaj\u00ed mo\u017en\u00e9 n\u00e1razy a zat\u00ed\u017een\u00ed [\u2026]","protected":false},"featured_media":8515,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[189],"posts_tag":[500],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts\/8514"}],"collection":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":6,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts\/8514\/revisions"}],"predecessor-version":[{"id":8564,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts\/8514\/revisions\/8564"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/media\/8515"}],"wp:attachment":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/media?parent=8514"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/posts_category?post=8514"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/posts_tag?post=8514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}