{"id":1352,"date":"2026-06-25T06:23:06","date_gmt":"2026-06-25T06:23:06","guid":{"rendered":"https:\/\/worm-and-worm-wheel.com\/?p=1352"},"modified":"2026-06-25T06:23:06","modified_gmt":"2026-06-25T06:23:06","slug":"worm-and-worm-wheel-for-belt-conveyor-drives","status":"publish","type":"post","link":"https:\/\/worm-and-worm-wheel.com\/cs\/worm-and-worm-wheel-for-belt-conveyor-drives\/","title":{"rendered":"\u0160nek a \u0161nekov\u00e9 kolo pro pohony p\u00e1sov\u00fdch dopravn\u00edk\u016f"},"content":{"rendered":"
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Korea Ever-Power \u00b7 Pr\u016fvodce aplika\u010dn\u00edm in\u017een\u00fdrstv\u00edm<\/p>\n

\u0160nek a \u0161nekov\u00e9 kolo pro pohony p\u00e1sov\u00fdch dopravn\u00edk\u016f \u2013 Pr\u016fvodce proti zp\u011btn\u00e9mu chodu<\/h1>\n

Horizont\u00e1ln\u00ed dopravn\u00edk pot\u0159ebuje efektivitu. \u0160ikm\u00fd dopravn\u00edk pot\u0159ebuje ochranu proti zp\u011btn\u00e9mu r\u00e1zu. Bod p\u0159eklopen\u00ed se nach\u00e1z\u00ed pod \u00fahlem sklonu p\u0159ibli\u017en\u011b 10 stup\u0148\u016f \u2013 pod n\u00edm v\u00edcestup\u0148ov\u00fd \u0161nekov\u00fd p\u0159evod \u0161et\u0159\u00ed energii; nad n\u00edm jednostup\u0148ov\u00fd p\u0159evod zabra\u0148uje zp\u011btn\u00e9mu r\u00e1zu zat\u00ed\u017een\u00e9ho p\u00e1su vlivem gravitace, kdy\u017e se motor zastav\u00ed. Chybn\u00e9 nastaven\u00ed prahov\u00e9 hodnoty vede bu\u010f k pl\u00fdtv\u00e1n\u00ed elekt\u0159inou, nebo k p\u00e1su pln\u00e9mu materi\u00e1lu vysypan\u00e9mu na v\u00fdrobn\u00ed halu.<\/p>\n

Promluvte si s technikem pohonu dopravn\u00edku \u2192<\/a><\/p>\n<\/div>\n

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Rychl\u00e1 odpov\u011b\u010f<\/div>\n

P\u00e1sov\u00e9 dopravn\u00edky p\u0159edstavuj\u00ed celosv\u011btov\u011b nejv\u011bt\u0161\u00ed segment aplikac\u00ed pro p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f a p\u0159edstavuj\u00ed zhruba 25 a\u017e 30 procent ve\u0161ker\u00e9 popt\u00e1vky po pr\u016fmyslov\u00fdch \u0161nekov\u00fdch p\u0159evodech. Rozhodnut\u00ed o specifikaci se rozd\u011bluje podle \u00fahlu sklonu: horizont\u00e1ln\u00ed a m\u00edrn\u00e9 sklony (0 a\u017e 10 stup\u0148\u016f) up\u0159ednost\u0148uj\u00ed 2- nebo 3-stup\u0148ov\u00e9 p\u00e1ry pro vy\u0161\u0161\u00ed \u00fa\u010dinnost (75 a\u017e 88 procent); m\u00edrn\u00e9 sklony (10 a\u017e 25 stup\u0148\u016f) vy\u017eaduj\u00ed jednostup\u0148ov\u00e9 p\u00e1ry pro samosvornou ochranu proti zp\u011btn\u00e9mu pohybu (\u00fa\u010dinnost 40 a\u017e 65 procent); strm\u00e9 sklony nad 25 stup\u0148\u016f vy\u017eaduj\u00ed jednostup\u0148ov\u00e9 p\u00e1ry a samostatnou mechanickou brzdu bez ohledu na stav samosvornosti. Rozb\u011bhov\u00fd moment na zat\u00ed\u017een\u00e9m p\u00e1su obvykle dosahuje 1,5 a\u017e 2,5n\u00e1sobku ust\u00e1len\u00e9ho provozn\u00edho momentu a nedodr\u017een\u00ed tohoto rozb\u011bhov\u00e9ho faktoru je nej\u010dast\u011bj\u0161\u00ed chybou p\u0159i dimenzov\u00e1n\u00ed p\u00e1r\u016f \u0161nekov\u00fdch p\u0159evod\u016f dopravn\u00edku. Standardn\u00ed p\u00e1rov\u00e1n\u00ed materi\u00e1l\u016f je kalen\u00fd ocelov\u00fd \u0161nek proti fosforov\u00e9mu bronzov\u00e9mu kolu; mokr\u00e9 nebo korozivn\u00ed dopravn\u00edky by m\u011bly specifikovat alternativy z hlin\u00edkov\u00e9ho bronzu nebo nerezov\u00e9 oceli.<\/p>\n<\/div>\n

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Pro\u010d jsou p\u00e1sov\u00e9 dopravn\u00edky nejv\u011bt\u0161\u00edm trhem pro p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f<\/h2>\n

T\u0159i vlastnosti \u0161neku a \u0161nekov\u00e9ho kola z nich \u010din\u00ed v\u00fdchoz\u00ed volbu pro pohony p\u00e1sov\u00fdch dopravn\u00edk\u016f nap\u0159\u00ed\u010d odv\u011btv\u00edmi od logistick\u00fdch center a\u017e po t\u011b\u017eebn\u00ed provozy.<\/p>\n

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Kompaktn\u00ed uspo\u0159\u00e1d\u00e1n\u00ed v \u00fahlu 90 stup\u0148\u016f<\/div>\n

Motor je namontov\u00e1n kolmo k h\u0159\u00eddeli dopravn\u00edkov\u00e9ho v\u00e1le\u010dku. T\u00edm se eliminuje slo\u017eitost spojov\u00e1n\u00ed a ustavov\u00e1n\u00ed \u0159adov\u00e9ho pohonu a \u0161et\u0159\u00ed se 30 a\u017e 50 procent axi\u00e1ln\u00ed d\u00e9lky za hnac\u00edm v\u00e1le\u010dkem \u2013 co\u017e je kritick\u00fd prostor v r\u00e1mech \u010del dopravn\u00edku.<\/p>\n<\/div>\n

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Vysok\u00fd p\u0159evodov\u00fd pom\u011br v jednom stupni<\/div>\n

P\u00e1sov\u00e9 dopravn\u00edky obvykle b\u011b\u017e\u00ed rychlost\u00ed p\u00e1su 0,3 a\u017e 1,5 m\/s, co\u017e vy\u017eaduje ot\u00e1\u010dky v\u00fdstupn\u00edho h\u0159\u00eddele 20 a\u017e 80 ot\/min p\u0159i ot\u00e1\u010dk\u00e1ch motoru 1 400 a\u017e 1 800 ot\/min. P\u0159evodov\u00e9 pom\u011bry 20:1 a\u017e 60:1 v jednom stupni \u0161nekov\u00e9ho p\u0159evodu eliminuj\u00ed pot\u0159ebu dvoustup\u0148ov\u00e9ho spir\u00e1lov\u00e9ho nebo planetov\u00e9ho uspo\u0159\u00e1d\u00e1n\u00ed.<\/p>\n<\/div>\n

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Samosvorn\u00fd syst\u00e9m proti zp\u011btn\u00e9mu r\u00e1zu<\/div>\n

Na \u0161ikm\u00fdch dopravn\u00edc\u00edch by gravita\u010dn\u00ed slo\u017eka zat\u00ed\u017een\u00e9ho p\u00e1su p\u0159i zastaven\u00ed motoru hnala p\u00e1s dozadu. Samosvorn\u00fd p\u00e1r \u0161neku a \u0161nekov\u00e9ho kola tomu zabra\u0148uje, ani\u017e by vy\u017eadoval samostatnou brzdu \u2013 co\u017e sni\u017euje po\u010det d\u00edl\u016f, n\u00e1klady a \u00fadr\u017ebu.<\/p>\n<\/div>\n<\/div>\n

Tyto t\u0159i vlastnosti spole\u010dn\u011b vysv\u011btluj\u00ed, pro\u010d se \u0161nekov\u00e9 p\u0159evodovky prod\u00e1vaj\u00ed l\u00e9pe ne\u017e v\u0161echny ostatn\u00ed typy p\u0159evod\u016f v dopravn\u00edkov\u00fdch aplikac\u00edch. \u0160roubov\u00e9 p\u0159evodovky nab\u00edzej\u00ed vy\u0161\u0161\u00ed \u00fa\u010dinnost, ale nemohou se samosvorn\u011b zapojit. Planetov\u00e9 p\u0159evodovky nab\u00edzej\u00ed kompaktnost, ale za vy\u0161\u0161\u00ed cenu a bez uspo\u0159\u00e1d\u00e1n\u00ed pod \u00fahlem 90 stup\u0148\u016f. \u0160nek a \u0161nekov\u00e9 kolo se nach\u00e1zej\u00ed ve st\u0159edu Vennova diagramu \u2013 p\u0159ijateln\u00e1 \u00fa\u010dinnost, samosvornost, kompaktn\u00ed pravo\u00fahl\u00e1 konstrukce a m\u00edrn\u00e1 cena.<\/p>\n

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Rozhodnut\u00ed o \u00fahlu sklonu \u2013 kdy\u017e anti-rollback zm\u011bn\u00ed specifikaci<\/h2>\n
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Kritickou technickou ot\u00e1zkou pro ka\u017edou specifikaci \u0161nekov\u00e9ho p\u0159evodu dopravn\u00edku je, zda aplikace pot\u0159ebuje ochranu proti zp\u011btn\u00e9mu r\u00e1zu. Odpov\u011b\u010f z\u00e1vis\u00ed na \u00fahlu sklonu p\u00e1su a dopravovan\u00e9m materi\u00e1lu. Horizont\u00e1ln\u00ed dopravn\u00edk p\u0159epravuj\u00edc\u00ed automobilov\u00e9 d\u00edly m\u00e1 nulov\u00e9 riziko zp\u011btn\u00e9ho r\u00e1zu v d\u016fsledku gravitace. Dopravn\u00edk p\u0159epravuj\u00edc\u00ed v\u00e1penec se sklonem 20 stup\u0148\u016f m\u00e1 v\u00e1\u017en\u00e9 riziko zp\u011btn\u00e9ho r\u00e1zu \u2013 zat\u00ed\u017een\u00fd p\u00e1s pod sklonem 20 stup\u0148\u016f ukl\u00e1d\u00e1 zna\u010dnou gravita\u010dn\u00ed potenci\u00e1ln\u00ed energii, kter\u00e1 v okam\u017eiku odpojen\u00ed nap\u00e1jen\u00ed pohne p\u00e1s zp\u011bt.<\/p>\n

N\u00ed\u017ee uveden\u00e1 tabulka mapuje \u00fahel sklonu s v\u00fdslednou specifikac\u00ed p\u00e1ru \u0161nekov\u00fdch p\u0159evod\u016f. Toto je nejd\u016fle\u017eit\u011bj\u0161\u00ed n\u00e1stroj pro v\u00fdb\u011br p\u0159i n\u00e1kupu \u0161nekov\u00fdch p\u0159evod\u016f dopravn\u00edku.<\/p>\n<\/div>\n

\"Princip<\/div>\n<\/div>\n
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Sklon<\/th>\nRiziko vr\u00e1cen\u00ed zp\u011bt<\/th>\nDoporu\u010den\u00e9 za\u010d\u00e1tky<\/th>\n\u00dahel stoup\u00e1n\u00ed \u03b3<\/th>\n\u00da\u010dinnost \u03b7<\/th>\nBrzda pot\u0159eba<\/th>\n<\/tr>\n<\/thead>\n
0\u00b0 \u2013 5\u00b0 (horizont\u00e1ln\u00ed a\u017e m\u00edrn\u00fd)<\/td>\n\u017d\u00e1dn\u00fd<\/td>\n2 nebo 3 starty<\/td>\n8\u00b0 \u2013 17\u00b0<\/td>\n75 \u2013 88%<\/td>\n\u017d\u00e1dn\u00fd<\/td>\n<\/tr>\n
5\u00b0 \u2013 10\u00b0 (m\u00edrn\u00fd sklon)<\/td>\nN\u00edzk\u00fd<\/td>\n2. start<\/td>\n8\u00b0 \u2013 12\u00b0<\/td>\n70 \u2013 80%<\/td>\nDoporu\u010deno v p\u0159\u00edpad\u011b drobiv\u00e9ho materi\u00e1lu<\/td>\n<\/tr>\n
10\u00b0 \u2013 18\u00b0 (st\u0159edn\u00ed sklon)<\/td>\nM\u00edrn\u00fd<\/td>\n1 start (samosvorn\u00fd)<\/td>\n3\u00b0 \u2013 6\u00b0<\/td>\n45 \u2013 65%<\/td>\nVoliteln\u00e9 (geometrick\u00fd z\u00e1mek posta\u010duje)<\/td>\n<\/tr>\n
18\u00b0 \u2013 25\u00b0 (strm\u00fd sklon)<\/td>\nVysok\u00fd<\/td>\n1 start (siln\u00e9 samosvorn\u00e9)<\/td>\n2\u00b0 \u2013 4\u00b0<\/td>\n35 \u2013 50%<\/td>\nDoporu\u010deno (riziko vibra\u010dn\u00edho te\u010den\u00ed)<\/td>\n<\/tr>\n
25\u00b0 \u2013 45\u00b0 (velmi strm\u00e9 \/ vertik\u00e1ln\u00ed)<\/td>\nKritick\u00fd<\/td>\n1 start + q \u2265 14<\/td>\n1\u00b0 \u2013 3\u00b0<\/td>\n30 \u2013 42%<\/td>\nPovinn\u00e9 (samostatn\u00e1 brzda + samosvorn\u00fd mechanismus)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

P\u0159echodov\u00e9 p\u00e1smo mezi 8 a 12 stupni sklonu je oblast\u00ed, kde je rozhodnut\u00ed o specifikaci nejv\u00edce sporn\u00e9. Pod 8 stupni dominuje \u00fa\u010dinnost a v\u00edcestup\u0148ov\u00e9 p\u00e1ry jsou jednozna\u010dn\u011b lep\u0161\u00ed. Nad 12 stupni dominuje ochrana proti zp\u011btn\u00e9mu pohybu a povinn\u00e9 jsou jednostup\u0148ov\u00e9 p\u00e1ry. Mezi 8 a 12 stupni z\u00e1vis\u00ed \u0159e\u0161en\u00ed na dopravovan\u00e9m materi\u00e1lu \u2013 t\u011b\u017ek\u00e9 sypk\u00e9 materi\u00e1ly (\u0161t\u011brk, ruda, obil\u00ed) ukl\u00e1daj\u00ed v\u00edce gravita\u010dn\u00ed energie na metr p\u00e1su a posouvaj\u00ed prahovou hodnotu n\u00ed\u017ee; lehk\u00e9 p\u0159edm\u011bty (bal\u00edky, kartony, plastov\u00e9 d\u00edly) ukl\u00e1daj\u00ed m\u00e9n\u011b energie a umo\u017e\u0148uj\u00ed, aby prahov\u00e1 hodnota byla vy\u0161\u0161\u00ed.<\/p>\n

Sn\u00ed\u017een\u00ed \u00fa\u010dinnosti p\u0159i volb\u011b p\u00e1ru s jedn\u00edm spu\u0161t\u011bn\u00edm na horizont\u00e1ln\u00edm dopravn\u00edku je zna\u010dn\u00e9. T\u0159\u00edstup\u0148ov\u00fd p\u00e1r s \u00fa\u010dinnost\u00ed 85 procent oproti p\u00e1ru s jedn\u00edm spu\u0161t\u011bn\u00edm s \u00fa\u010dinnost\u00ed 50 procent na stejn\u00e9m motoru dopravn\u00edku o v\u00fdkonu 5,5 kW trvale pl\u00fdtv\u00e1 zhruba 1,9 kW \u2013 14 000 kWh ro\u010dn\u011b p\u0159i 7 500 provozn\u00edch hodin\u00e1ch. P\u0159i korejsk\u00fdch pr\u016fmyslov\u00fdch sazb\u00e1ch elekt\u0159iny to p\u0159edstavuje p\u0159ibli\u017en\u011b 1 800 USD ro\u010dn\u011b v pl\u00fdtv\u00e1n\u00ed energi\u00ed na jeden pohon. Stanoven\u00ed spr\u00e1vn\u00e9ho po\u010dtu spu\u0161t\u011bn\u00ed pro skute\u010dn\u00fd sklon nen\u00ed drobn\u00e1 optimalizace; je to v\u00fdznamn\u00e9 rozhodnut\u00ed z hlediska provozn\u00edch n\u00e1klad\u016f.<\/p>\n

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Dimenzov\u00e1n\u00ed \u0161nekov\u00e9ho p\u0159evodu pro nep\u0159etr\u017eit\u00fd provoz dopravn\u00edku<\/h2>\n

\"detail<\/p>\n

Dimenzov\u00e1n\u00ed \u0161nekov\u00e9ho p\u0159evodu dopravn\u00edku vy\u017eaduje dva v\u00fdpo\u010dty, kter\u00e9 se v po\u010d\u00e1te\u010dn\u00ed specifikaci \u010dasto opom\u00edjej\u00ed: multiplik\u00e1tor spou\u0161t\u011bc\u00edho momentu a tepeln\u00e1 kontrola pro nep\u0159etr\u017eit\u00fd provoz.<\/p>\n

Spou\u0161t\u011bc\u00ed moment na zat\u00ed\u017een\u00e9m \u0159emenu.<\/strong> P\u00e1sov\u00fd dopravn\u00edk, kter\u00fd se zastav\u00ed pod zat\u00ed\u017een\u00edm a znovu se rozb\u011bhne s materi\u00e1lem na p\u00e1su, zaznamen\u00e1v\u00e1 p\u0159i rozb\u011bhu v\u00fdrazn\u011b vy\u0161\u0161\u00ed to\u010div\u00fd moment ne\u017e b\u011bhem ust\u00e1len\u00e9ho provozu. K tomu p\u0159isp\u00edv\u00e1 statick\u00e9 t\u0159en\u00ed v p\u00e1su, usazov\u00e1n\u00ed materi\u00e1lu b\u011bhem zastaven\u00ed a n\u00e1b\u011bh zrychlen\u00ed. Typick\u00fd multiplik\u00e1tor rozb\u011bhov\u00e9ho momentu pro restart zat\u00ed\u017een\u00e9ho p\u00e1su se pohybuje od 1,5n\u00e1sobku (lehk\u00e9 zat\u00ed\u017een\u00ed, kr\u00e1tk\u00e9 zastaven\u00ed) do 2,5n\u00e1sobku (t\u011b\u017ek\u00fd sypk\u00fd materi\u00e1l, prodlou\u017een\u00e9 zastaven\u00ed se zhutn\u011bn\u00edm materi\u00e1lu). Jmenovit\u00fd to\u010div\u00fd moment \u0161nekov\u00e9ho p\u0159evodu mus\u00ed o rezervu servisn\u00edho sou\u010dinitele p\u0159ekro\u010dit rozb\u011bhov\u00fd to\u010div\u00fd moment \u2013 \u200b\u200bnejen to\u010div\u00fd moment v ust\u00e1len\u00e9m stavu \u2013 a to nejen o rezervu provozn\u00edho sou\u010dinitele.<\/p>\n

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Vzorec pro dimenzov\u00e1n\u00ed \u0161nekov\u00e9ho p\u0159evodu dopravn\u00edku<\/div>\n
T_\u0159emen = (F_\u0159emen \u00d7 D_buben) \/ 2<\/div>\n
T_startup = T_\u0159emen \u00d7 K_start \u00a0\u00a0 (K_start = 1,5 a\u017e 2,5)<\/span><\/div>\n
T_po\u017eadovan\u00fd = T_spu\u0161t\u011bn\u00ed \u00d7 SF \u00a0\u00a0 (SF = 1,25 a\u017e 2,0 na t\u0159\u00eddu provozu)<\/span><\/div>\n
Jmenovit\u00fd to\u010div\u00fd moment \u0161nekov\u00e9ho p\u0159evodu \u2265 T_required<\/div>\n
F_\u0159emen = napnut\u00ed \u0159emenu (N), D_drum = pr\u016fm\u011br hnac\u00edho bubnu (m)<\/div>\n
K_start = multiplik\u00e1tor spou\u0161t\u011bn\u00ed, SF = servisn\u00ed faktor<\/div>\n<\/div>\n

Tepeln\u00e1 kontrola pro nep\u0159etr\u017eit\u00fd provoz.<\/strong> P\u00e1sov\u00e9 dopravn\u00edky \u010dasto b\u011b\u017e\u00ed 16 a\u017e 24 hodin denn\u011b a \u0161nekov\u00fd p\u0159evod odv\u00e1d\u00ed zhruba 15 a\u017e 50 procent vstupn\u00edho v\u00fdkonu jako teplo (v z\u00e1vislosti na \u00fa\u010dinnosti). Pohon o v\u00fdkonu 5,5 kW s jednochod\u00fdm p\u00e1rem s 50% \u00fa\u010dinnost\u00ed generuje nep\u0159etr\u017eit\u011b 2,75 kW odpadn\u00edho tepla. Bez dostate\u010dn\u00e9ho chlazen\u00ed \u2013 p\u0159irozenou konvekc\u00ed, ventil\u00e1torem nebo cirkulac\u00ed oleje \u2013 m\u016f\u017ee teplota sk\u0159\u00edn\u011b p\u0159ekro\u010dit tepeln\u00fd limit maziva (obvykle 90 a\u017e 100 stup\u0148\u016f Celsia u syntetick\u00e9ho plastick\u00e9ho maziva), co\u017e zp\u016fsobuje urychlenou degradaci. Ka\u017ed\u00fdch 10 stup\u0148\u016f nad referen\u010dn\u00ed teplotou maziva zkracuje \u017eivotnost plastick\u00e9ho maziva na polovinu. U jak\u00e9hokoli \u0161nekov\u00e9ho p\u0159evodov\u00e9ho pohonu dopravn\u00edku s nep\u0159etr\u017eit\u00fdm provozem a vstupn\u00edm v\u00fdkonem nad 3 kW s jednochod\u00fdmi p\u00e1ry specifikujte \u017eebrovan\u00e9 sk\u0159\u00edn\u011b nebo chlazen\u00ed ventil\u00e1torem.<\/p>\n

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Pozn\u00e1mka k in\u017een\u00fdrsk\u00e9mu stolu<\/div>\n

Korejsk\u00e9 logistick\u00e9 centrum specifikovalo pro novou linku na t\u0159\u00edd\u011bn\u00ed bal\u00edk\u016f dvouchod\u00e9 \u0161nekov\u00e9 p\u0159evody s rozte\u010d\u00ed 80 mm. V\u0161ech 24 dopravn\u00edk\u016f bylo horizont\u00e1ln\u00edch. O \u0161est m\u011bs\u00edc\u016f pozd\u011bji za\u0159\u00edzen\u00ed p\u0159idalo mezipatro se \u010dty\u0159mi \u0161ikm\u00fdmi p\u0159epravn\u00edmi dopravn\u00edky pod \u00fahlem 15 stup\u0148\u016f \u2013 a t\u00fdm pro zad\u00e1v\u00e1n\u00ed zak\u00e1zek objednal stejn\u00e9 dvouchod\u00e9 p\u00e1ry pou\u017eit\u00e9 na horizont\u00e1ln\u00edch dopravn\u00edc\u00edch. B\u011bhem dvou t\u00fddn\u016f oper\u00e1to\u0159i hl\u00e1sili vracen\u00ed bal\u00edk\u016f zp\u011bt b\u011bhem zastaven\u00ed motoru p\u0159i zm\u011bn\u011b sm\u011bny: krabice se p\u0159i ka\u017ed\u00e9m vypnut\u00ed posunuly o 0,5 a\u017e 1,5 metru dozadu. Dvouchod\u00fd p\u00e1r s \u00fahlem 15 stup\u0148\u016f m\u011bl \u00fahel stoup\u00e1n\u00ed p\u0159ibli\u017en\u011b 11 stup\u0148\u016f \u2013 co\u017e je v\u00fdrazn\u011b v\u00edce ne\u017e \u00fahel t\u0159en\u00ed p\u0159ibli\u017en\u011b 5 stup\u0148\u016f s instalovan\u00fdm syntetick\u00fdm olejem PAG. P\u00e1ry byly geometricky neblokovateln\u00e9. V\u00fdm\u011bna za jednochod\u00e9 p\u00e1ry se stejnou rozte\u010d\u00ed a modulem st\u00e1la 480 USD za pohon \u00d7 4 pohony = celkem 1 920 USD plus 2 dny instala\u010dn\u00ed pr\u00e1ce za 1 600 USD. N\u00e1hradn\u00ed p\u00e1ry s \u00fahlem stoup\u00e1n\u00ed 5,7 stup\u0148\u016f byly za stejn\u00fdch mazac\u00edch podm\u00ednek na hranici samosvornosti. Technick\u00e9 odd\u011blen\u00ed p\u0159idalo na ka\u017ed\u00fd pohon jednoduch\u00fd zp\u011btn\u00fd uz\u00e1v\u011br jako dodate\u010dn\u00e9 poji\u0161t\u011bn\u00ed \u2013 120 USD za jednotku. Celkov\u00e9 n\u00e1klady na opravu chyby ve specifikaci \u010dinily 2 400 USD plus 2 dny zpo\u017ed\u011bn\u00ed uveden\u00ed mezipatra do provozu. P\u016fvodn\u00ed chyb\u011b se dalo p\u0159edej\u00edt kontrolou tabulky pro rozhodov\u00e1n\u00ed o \u00fahlu sklonu p\u0159ed objedn\u00e1n\u00edm. 4 \u0161ikm\u00e9 dopravn\u00edky pot\u0159ebovaly jin\u00e9 p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f ne\u017e 24 horizont\u00e1ln\u00edch \u2013 stejnou osovou vzd\u00e1lenost, stejn\u00fd modul, r\u016fzn\u00fd po\u010det start\u016f.<\/p>\n<\/div>\n

<\/p>\n

V\u00fdb\u011br materi\u00e1lu pro p\u00e1ry \u0161nekov\u00fdch ozuben\u00fdch kol dopravn\u00edku podle prost\u0159ed\u00ed<\/h2>\n
\n
\"\u0161nek<\/div>\n
\n

Prost\u0159ed\u00ed dopravn\u00edk\u016f sah\u00e1 od \u010dist\u00fdch vnit\u0159n\u00edch logistick\u00fdch center p\u0159es haly na zpracov\u00e1n\u00ed mokr\u00fdch potravin a\u017e po pra\u0161n\u00e9 t\u011b\u017eebn\u00ed are\u00e1ly pod \u0161ir\u00fdm nebem. Materi\u00e1l \u0161neku a \u0161nekov\u00e9ho kola mus\u00ed odpov\u00eddat prost\u0159ed\u00ed \u2013 standardn\u00ed fosforov\u00fd bronz funguje dob\u0159e v interi\u00e9ru, ale dopravn\u00edk na zpracov\u00e1n\u00ed ryb nebo p\u00e1s v lomu vy\u017eaduje jinou metalurgii a ochranu povrchu.<\/p>\n

Praktick\u00fd rozsah rozhodnut\u00ed o materi\u00e1lech \u0161nekov\u00fdch p\u0159evod\u016f dopravn\u00edk\u016f pokr\u00fdvaj\u00ed t\u0159i kategorie prost\u0159ed\u00ed.<\/p>\n<\/div>\n<\/div>\n

\n
\n
Standardn\u00ed vnit\u0159n\u00ed<\/div>\n

\u010cerv:<\/strong> Kalen\u00e1 ocel 16MnCr5, HRC 58-62, brou\u0161en\u00e1 Ra 0,4-0,8 \u00b5m.
\nKolo:<\/strong> Fosforov\u00fd bronz CuSn12Ni, odvalovan\u00fd Ra 1,6 \u00b5m.
\nMazivo:<\/strong> Syntetick\u00fd nebo miner\u00e1ln\u00ed p\u0159evodov\u00fd olej PAG EP.
\nAplikace:<\/strong> Dopravn\u00edk automobilov\u00fdch d\u00edl\u016f, t\u0159\u00edd\u011bn\u00ed bal\u00edk\u016f, pod\u00e1v\u00e1n\u00ed do balic\u00ed linky.<\/p>\n<\/div>\n

\n
Mokr\u00e9 \/ Om\u00fdv\u00e1n\u00ed<\/div>\n

\u010cerv:<\/strong> Nerezov\u00e1 ocel AISI 304 nebo 316L, nebo pozinkovan\u00e1 uhl\u00edkov\u00e1 ocel.
\nKolo:<\/strong> Hlin\u00edkov\u00fd bronz CuAl10Fe5Ni5 (vynikaj\u00edc\u00ed odolnost proti korozi oproti fosforov\u00e9mu bronzu).
\nMazivo:<\/strong> Syntetick\u00e9 mazivo NSF H1 potravin\u00e1\u0159sk\u00e9 kvality, ut\u011bsn\u011bn\u00e9 pouzdro.
\nAplikace:<\/strong> Zpracov\u00e1n\u00ed mo\u0159sk\u00fdch plod\u016f, ml\u00e9\u010dn\u00e9 v\u00fdrobky, n\u00e1poje, farmaceutick\u00fd pr\u016fmysl.<\/p>\n<\/div>\n

\n
Pra\u0161n\u00e9 \/ abrazivn\u00ed<\/div>\n

\u010cerv:<\/strong> Kalen\u00e1 ocel 42CrMo4, HRC 28-34, brou\u0161en\u00e1 Ra 0,8 \u00b5m (odoln\u00e1 proti n\u00e1razu).
\nKolo:<\/strong> Fosforov\u00fd bronz lit\u00fd odst\u0159ediv\u011b (hust\u0161\u00ed, s men\u0161\u00edm po\u010dtem vad p\u00f3rovitosti ne\u017e lit\u00fd odlitek od samoty).
\nMazivo:<\/strong> Ut\u011bsn\u011bn\u00e9 mazivo na celou dobu \u017eivotnosti s labyrintov\u00fdmi t\u011bsn\u011bn\u00edmi, odvzdu\u0161\u0148ovac\u00ed filtr.
\nAplikace:<\/strong> Lom, cement, manipulace s uhl\u00edm, kamenivo.<\/p>\n<\/div>\n<\/div>\n

Volba materi\u00e1lu je t\u00e9m\u011b\u0159 v\u017edy \u0159\u00edzena sp\u00ed\u0161e prost\u0159ed\u00edm ne\u017e zat\u00ed\u017een\u00edm. Vnit\u0159n\u00ed dopravn\u00edk s kroutic\u00edm momentem 200 N\u00b7m a dopravn\u00edk na zpracov\u00e1n\u00ed ryb s kroutic\u00edm momentem 200 N\u00b7m pot\u0159ebuj\u00ed stejnou kroutic\u00ed s\u00edlu, ale velmi odli\u0161nou metalurgii a t\u011bsn\u011bn\u00ed. Pou\u017eit\u00ed standardn\u00edho fosforov\u00e9ho bronzu v prost\u0159ed\u00ed s mokr\u00fdm oplachov\u00e1n\u00edm vede k odzinkovac\u00ed korozi na kole \u2013 neviditeln\u00e9, dokud tlou\u0161\u0165ka zubu neztrat\u00ed 10 a\u017e 15 procent sv\u00e9ho p\u016fvodn\u00edho rozm\u011bru a n\u00e1hle se nezv\u011bt\u0161\u00ed v\u016fle.<\/p>\n

<\/p>\n

P\u0159\u00edpady specifikace t\u0159\u00ed p\u00e1r\u016f \u0161nekov\u00fdch p\u0159evod\u016f dopravn\u00edku<\/h2>\n

\"aplikace<\/p>\n

P\u0159\u00edpad 1 \u2013 Korejsk\u00fd dopravn\u00edk automobilov\u00fdch d\u00edl\u016f: horizont\u00e1ln\u00ed, priorita efektivity<\/h3>\n

Korejsk\u00fd dodavatel automobilov\u00e9ho pr\u016fmyslu Tier 1 specifikoval p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f pro 12 horizont\u00e1ln\u00edch dopravn\u00edk\u016f nesouc\u00edch lisovan\u00e9 panely karoserie mezi lisovac\u00edmi linkami. Rychlost p\u00e1su 0,8 m\/s, pr\u016fm\u011br hnac\u00edho bubnu 320 mm, napnut\u00ed \u0159emenu 2 200 N. Vypo\u010d\u00edtan\u00fd v\u00fdstupn\u00ed to\u010div\u00fd moment: T_belt = 2 200 \u00d7 0,32 \/ 2 = 352 N\u00b7m. N\u00e1sobi\u010d spou\u0161t\u011bn\u00ed pro lehk\u00fd horizont\u00e1ln\u00ed restart: K_start = 1,3. Provozn\u00ed faktor pro m\u00edrn\u00fd r\u00e1z (variace \u010dasov\u00e1n\u00ed lisu): SF = 1,5. Po\u017eadovan\u00fd jmenovit\u00fd to\u010div\u00fd moment: 352 \u00d7 1,3 \u00d7 1,5 = 686 N\u00b7m. Sklon: 0 stup\u0148\u016f \u2013 \u017e\u00e1dn\u00e9 riziko zp\u011btn\u00e9ho r\u00e1zu. Specifikace: 3stupn\u00fd p\u00e1r \u0161nekov\u00fdch p\u0159evod\u016f, modul 5, osov\u00e1 vzd\u00e1lenost 125 mm, q = 10, \u00fahel stoup\u00e1n\u00ed 16,7 stup\u0148\u016f, p\u0159evodov\u00fd pom\u011br 40:1. \u00da\u010dinnost za jmenovit\u00fdch podm\u00ednek: 86 procent. Ro\u010dn\u00ed \u00faspora elekt\u0159iny oproti specifikaci s jedn\u00edm spu\u0161t\u011bn\u00edm p\u0159i 48% \u00fa\u010dinnosti: 16 200 kWh na pohon \u00d7 12 pohon\u016f = 194 400 kWh = p\u0159ibli\u017en\u011b 24 000 USD ro\u010dn\u011b. Ponau\u010den\u00ed: u horizont\u00e1ln\u00edch dopravn\u00edk\u016f nen\u00ed specifikace v\u00edcen\u00e1sobn\u00fdch p\u00e1r\u016f pohon\u016f z d\u016fvodu efektivity optimalizac\u00ed \u2013 jedn\u00e1 se o rozhodnut\u00ed o provozn\u00edch n\u00e1kladech s p\u011btim\u00edstn\u00fdm ro\u010dn\u00edm dopadem v r\u00e1mci typick\u00e9 v\u00fdrobn\u00ed haly.<\/p>\n

P\u0159\u00edpad 2 \u2013 Japonsk\u00fd \u0161ikm\u00fd dopravn\u00edk pro potravin\u00e1\u0159sk\u00e9 \u00fa\u010dely: 18 stup\u0148\u016f, ochrana proti zp\u011btn\u00e9mu r\u00e1zu + oplachov\u00e1n\u00ed<\/h3>\n

Japonsk\u00fd zpracovatel mra\u017een\u00fdch mo\u0159sk\u00fdch plod\u016f specifikoval \u0161nekov\u00e9 p\u0159evody pro 6 \u0161ikm\u00fdch dopravn\u00edk\u016f p\u0159epravuj\u00edc\u00edch t\u00e1cy s mra\u017een\u00fdmi krevetami z myc\u00ed stanice v \u00farovni ter\u00e9nu do balic\u00ed haly v mezipat\u0159e. Sklon: 18 stup\u0148\u016f. Nap\u011bt\u00ed \u0159emene p\u0159i pln\u00e9m zat\u00ed\u017een\u00ed: 1 800 N. Hnac\u00ed buben: 250 mm. T_\u0159emen = 225 N\u00b7m. K_start = 2,0 (mra\u017een\u00e9 t\u00e1cy se b\u011bhem restartu p\u0159ilep\u00ed k p\u00e1su). SF = 1,5 (st\u0159edn\u00ed r\u00e1z z kol\u00eds\u00e1n\u00ed hmotnosti t\u00e1c\u016f). T_required = 225 \u00d7 2,0 \u00d7 1,5 = 675 N\u00b7m. Riziko zp\u011btn\u00e9ho r\u00e1zu p\u0159i 18 stupn\u00edch: vysok\u00e9 \u2013 gravita\u010dn\u00ed slo\u017eka na zat\u00ed\u017een\u00e9m p\u00e1su by poh\u00e1n\u011bla p\u00e1s zp\u011bt rychlost\u00ed p\u0159ibli\u017en\u011b 0,3 m\/s. Specifikace: \u0161nekov\u00fd p\u0159evod s jedn\u00edm chodem, modul 5, rozte\u010d 160 mm, p\u0159evodov\u00fd pom\u011br 50:1, \u00fahel stoup\u00e1n\u00ed 3,6 stup\u0148\u016f (siln\u011b samosvorn\u00fd). Materi\u00e1l: \u0160nek z nerezov\u00e9 oceli AISI 316L, kolo z hlin\u00edkov\u00e9ho bronzu CuAl10Fe5Ni5. Povrchov\u00e1 \u00faprava: Ra 0,4 \u00b5m brou\u0161eno (po\u017eadavek pro potravin\u00e1\u0159skou z\u00f3nu). Mazivo: Syntetick\u00e9 mazivo s certifikac\u00ed NSF H1. Ut\u011bsn\u011bn\u00e9 pouzdro IP65. \u00da\u010dinnost: 42 procent \u2013 \u200b\u200bco\u017e znamen\u00e1, \u017ee motor o v\u00fdkonu 3 kW poskytuje pouze 1,26 kW u\u017eite\u010dn\u00e9ho v\u00fdkonu. Nev\u00fdhodou \u00fa\u010dinnosti jsou n\u00e1klady na ochranu proti samovoln\u00e9mu pohybu i specifikaci pro potravin\u00e1\u0159skou t\u0159\u00eddu. Ponau\u010den\u00ed: u aplikac\u00ed \u0161ikm\u00fdch dopravn\u00edk\u016f pro potravin\u00e1\u0159skou t\u0159\u00eddu je \u00fa\u010dinnost posledn\u00ed prioritou \u2013 ochrana proti samovoln\u00e9mu pohybu a shoda s po\u017eadavky na materi\u00e1l jsou ned\u00edlnou sou\u010d\u00e1st\u00ed. Proch\u00e1zet \u0161nekov\u00fd p\u0159evodov\u00fd reduktor rychlosti<\/a> mo\u017enosti, kter\u00e9 spl\u0148uj\u00ed specifikace pro potravin\u00e1\u0159skou a omyvatelnou mont\u00e1\u017e pro pohony \u0161ikm\u00fdch dopravn\u00edk\u016f.<\/p>\n

P\u0159\u00edpad 3 \u2013 Vietnamsk\u00fd d\u016fln\u00ed dopravn\u00edk: 30 stup\u0148\u016f, jednor\u00e1zov\u00fd chod + p\u00e1sov\u00e1 brzda<\/h3>\n

Vietnamsk\u00fd v\u00e1pencov\u00fd lom specifikoval p\u00e1ry \u0161nekov\u00fdch kol pro p\u00e1sov\u00fd dopravn\u00edk s \u00fahlem 30 stup\u0148\u016f, kter\u00fd p\u0159epravuje drcen\u00fd k\u00e1men z prim\u00e1rn\u00edho \u010delistn\u00edho drti\u010de do sekund\u00e1rn\u00ed t\u0159\u00eddic\u00ed stanice. Nap\u011bt\u00ed p\u00e1su p\u0159i pln\u00e9m zat\u00ed\u017een\u00ed: 6 500 N. Hnac\u00ed buben: 400 mm. T_\u0159emen = 1 300 N\u00b7m. K_start = 2,5 (zhutn\u011bn\u00fd k\u00e1men na p\u00e1su b\u011bhem del\u0161\u00edch zast\u00e1vek). SF = 2,0 (siln\u00fd r\u00e1z z nepravideln\u00e9 velikosti kamene). T_required = 1 300 \u00d7 2,5 \u00d7 2,0 = 6 500 N\u00b7m. Riziko zp\u011btn\u00e9ho r\u00e1zu p\u0159i 30 stupn\u00edch: kritick\u00e9 \u2013 pln\u011b zat\u00ed\u017een\u00fd 30stup\u0148ov\u00fd p\u00e1s ukl\u00e1d\u00e1 dostatek energie k prudk\u00e9mu zrychlen\u00ed dozadu a zp\u016fsoben\u00ed selh\u00e1n\u00ed spoje p\u00e1su. Specifikace: p\u00e1r \u0161nekov\u00fdch kol s jedn\u00edm p\u0159echodem, modul 10, osov\u00e1 vzd\u00e1lenost 250 mm, q = 14, \u00fahel stoup\u00e1n\u00ed 2,0 stupn\u011b (siln\u00e9 samosvorn\u00e9). \u0160nek: kalen\u00fd 42CrMo4, HRC 30. Kolo: odst\u0159ediv\u011b lit\u00fd fosforov\u00fd bronz CuSn12Ni. Dodate\u010dn\u00e9 vybaven\u00ed: p\u00e1sov\u00e1 brzda na vstupn\u00edm h\u0159\u00eddeli pro vysok\u00e9 ot\u00e1\u010dky jako redundantn\u00ed brzda. Brzda se aktivuje automaticky p\u0159i rozpojen\u00ed styka\u010de motoru a zaji\u0161\u0165uje sekund\u00e1rn\u00ed brzdu nez\u00e1visle na samosvorn\u00e9m \u0161nekov\u00e9m p\u0159evodu. T\u011bsn\u011bn\u00ed: trojit\u00e9 labyrintov\u00e9 s odvzdu\u0161\u0148ovac\u00edm filtrem (v\u00e1pencov\u00fd prach). Chlazen\u00ed: ventil\u00e1tor s nucen\u00fdm ob\u011bhem vzduchu na sk\u0159\u00edni (nep\u0159etr\u017eit\u00fd provoz p\u0159i teplot\u011b 38 stup\u0148\u016f Celsia, jednor\u00e1zov\u00fd rozb\u011bh s \u00fa\u010dinnost\u00ed 38 procent generuje p\u0159ibli\u017en\u011b 5,6 kW odpadn\u00edho tepla). Ponau\u010den\u00ed: strm\u00e9 d\u016fln\u00ed dopravn\u00edky pracuj\u00ed na pr\u016fse\u010d\u00edku maxim\u00e1ln\u00edho rizika zp\u011btn\u00e9ho r\u00e1zu, maxim\u00e1ln\u00edho rozb\u011bhov\u00e9ho momentu, maxim\u00e1ln\u00edho tepeln\u00e9ho zat\u00ed\u017een\u00ed a maxim\u00e1ln\u00ed expozice kontaminaci. Ka\u017ed\u00fd parametr je tla\u010den na hranici sv\u00fdch mo\u017enost\u00ed \u2013 a \u0161nekov\u00fd p\u0159evod mus\u00ed zvl\u00e1dat v\u0161echny \u010dty\u0159i sou\u010dasn\u011b.<\/p>\n

<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
\n
\nOt\u00e1zka: Mohu pou\u017e\u00edt stejn\u00fd p\u00e1r \u0161nekov\u00fdch p\u0159evod\u016f pro horizont\u00e1ln\u00ed i \u0161ikm\u00e9 dopravn\u00edky na stejn\u00e9 v\u00fdrobn\u00ed lince?<\/summary>\n

Pouze pokud oba dopravn\u00edky dok\u00e1\u017e\u00ed akceptovat stejn\u00fd po\u010det start\u016f. Pokud jsou n\u011bkter\u00e9 dopravn\u00edky horizont\u00e1ln\u00ed a jin\u00e9 maj\u00ed sklon nad 10 stup\u0148\u016f, m\u011bly by horizont\u00e1ln\u00ed dopravn\u00edky pou\u017e\u00edvat v\u00edcechodov\u00e9 p\u00e1ry pro efektivitu, zat\u00edmco \u0161ikm\u00e9 dopravn\u00edky by m\u011bly pou\u017e\u00edvat jednochodov\u00e9 p\u00e1ry pro zamezen\u00ed zp\u011btn\u00e9ho chodu. Pou\u017eit\u00ed jednochodov\u00fdch p\u00e1r\u016f na horizont\u00e1ln\u00edch dopravn\u00edc\u00edch pl\u00fdtv\u00e1 30 a\u017e 40 procenty vstupn\u00edho v\u00fdkonu. Pou\u017eit\u00ed v\u00edcechodov\u00fdch p\u00e1r\u016f na \u0161ikm\u00fdch dopravn\u00edc\u00edch riskuje zp\u011btn\u00fd chod. Standardizace na specifikaci jednoho p\u00e1ru nap\u0159\u00ed\u010d sm\u00ed\u0161en\u00fdmi sklony je b\u011b\u017en\u00e9 zjednodu\u0161en\u00ed zad\u00e1v\u00e1n\u00ed ve\u0159ejn\u00fdch zak\u00e1zek, kter\u00e9 je z hlediska pl\u00fdtv\u00e1n\u00ed energi\u00ed nebo rizika zp\u011btn\u00e9ho chodu podstatn\u011b n\u00e1kladn\u011bj\u0161\u00ed ne\u017e zachov\u00e1n\u00ed dvou specifikac\u00ed.<\/p>\n<\/details>\n

\nOt\u00e1zka: Co se stane se spolehlivost\u00ed samosvoru b\u011bhem \u017eivotnosti \u0161nekov\u00e9ho ozuben\u00e9ho kola dopravn\u00edku?<\/summary>\n

S opot\u0159eben\u00edm bronzov\u00e9ho kola se m\u011bn\u00ed efektivn\u00ed koeficient t\u0159en\u00ed v m\u00edst\u011b kontaktu \u2013 a tato zm\u011bna m\u016f\u017ee prob\u00edhat v obou sm\u011brech. Z\u00e1b\u011bh b\u011bhem prvn\u00edch 100 a\u017e 300 hodin obvykle vyhlazuje bronzov\u00fd povrch a m\u00edrn\u011b sni\u017euje t\u0159en\u00ed, co\u017e m\u016f\u017ee u p\u00e1ru s hrani\u010dn\u00edm samosvorn\u00fdm mechanismem p\u0159estat b\u00fdt samosvorn\u00fd. Po z\u00e1b\u011bhu se koeficient t\u0159en\u00ed stabilizuje a z\u016fst\u00e1v\u00e1 konzistentn\u00ed po tis\u00edce hodin. U kritick\u00fdch \u0161ikm\u00fdch dopravn\u00edk\u016f specifikujte \u00fahel stoup\u00e1n\u00ed alespo\u0148 1 a\u017e 2 stupn\u011b pod o\u010dek\u00e1van\u00fdm \u00fahlem t\u0159en\u00ed po z\u00e1b\u011bhu (pou\u017eijte dynamick\u00fd \u00fahel t\u0159en\u00ed, nikoli statick\u00fd). Tato rezerva zaji\u0161\u0165uje, \u017ee samosvorn\u00fd mechanismus je zachov\u00e1n po celou dobu \u017eivotnosti. Pokud p\u00e1r pracuje do 1 stupn\u011b od prahov\u00e9 hodnoty blokov\u00e1n\u00ed, p\u0159idejte jako pojistku samostatnou brzdu.<\/p>\n<\/details>\n

\nOt\u00e1zka: Jak ovliv\u0148uje rychlost p\u00e1su specifikaci \u0161nekov\u00e9ho p\u0159evodu pro dopravn\u00edky?<\/summary>\n

Rychlost p\u00e1su ur\u010duje po\u017eadovan\u00e9 ot\u00e1\u010dky v\u00fdstupn\u00edho h\u0159\u00eddele a t\u00edm i p\u0159evodov\u00fd pom\u011br pot\u0159ebn\u00fd pro danou rychlost motoru. Typick\u00e9 p\u00e1sov\u00e9 dopravn\u00edky b\u011b\u017e\u00ed rychlost\u00ed 0,3 a\u017e 2,0 m\/s. Pro hnac\u00ed buben o pr\u016fm\u011bru 300 mm odpov\u00edd\u00e1 1,0 m\/s zhruba 64 ot\u00e1\u010dk\u00e1m za minutu. U motoru s ot\u00e1\u010dkami 1 450 ot.\/min je po\u017eadovan\u00fd pom\u011br p\u0159ibli\u017en\u011b 23:1 \u2013 dosa\u017eiteln\u00fd s jedn\u00edm stupn\u011bm \u0161nekov\u00e9ho p\u0159evodu. Rychlej\u0161\u00ed p\u00e1sy (nad 2 m\/s) mohou vy\u017eadovat ni\u017e\u0161\u00ed pom\u011bry, kter\u00e9 stejn\u011b vedou ke 2 nebo 3 start\u016fm. Pomalej\u0161\u00ed p\u00e1sy (pod 0,3 m\/s) vy\u017eaduj\u00ed vy\u0161\u0161\u00ed pom\u011bry, kter\u00e9 up\u0159ednost\u0148uj\u00ed p\u00e1ry s jedn\u00edm startem s dodate\u010dn\u00fdm p\u0159\u00edsp\u011bvkem p\u0159evodu. Rychlost p\u00e1su p\u0159\u00edmo nem\u011bn\u00ed rozhodnut\u00ed o ochran\u011b proti zp\u011btn\u00e9mu pohybu (kter\u00e9 z\u00e1vis\u00ed na sklonu), ale ovliv\u0148uje, zda po\u017eadovan\u00fd pom\u011br p\u0159irozen\u011b spad\u00e1 do rozsahu samosvorn\u00fdch nebo nesvorn\u00fdch start\u016f.<\/p>\n<\/details>\n

\nOt\u00e1zka: M\u00e1m pro \u0161ikm\u00e9 dopravn\u00edky krom\u011b samosvorn\u00e9ho \u0161nekov\u00e9ho p\u0159evodu specifikovat i zp\u011btn\u00fd doraz?<\/summary>\n

Pro sklony nad 15 stup\u0148\u016f p\u0159i p\u0159eprav\u011b t\u011b\u017ek\u00e9ho sypk\u00e9ho materi\u00e1lu ano. Zp\u011btn\u00fd doraz (naz\u00fdvan\u00fd tak\u00e9 za\u0159\u00edzen\u00ed proti zp\u011btn\u00e9mu chodu nebo z\u00e1dr\u017e) je samostatn\u00e9 mechanick\u00e9 za\u0159\u00edzen\u00ed namontovan\u00e9 na hnac\u00ed h\u0159\u00eddeli, kter\u00e9 umo\u017e\u0148uje ot\u00e1\u010den\u00ed vp\u0159ed, ale blokuje se vzad. Cena se obvykle pohybuje kolem 80 a\u017e 200 USD za jednotku. Zp\u011btn\u00fd doraz poskytuje redundantn\u00ed ochranu proti zp\u011btn\u00e9mu chodu, i kdy\u017e je samosvornost \u0161nekov\u00e9ho p\u0159evodu naru\u0161ena vibracemi, zm\u011bnou maz\u00e1n\u00ed nebo posunem koeficientu t\u0159en\u00ed v d\u016fsledku opot\u0159eben\u00ed. U dopravn\u00edk\u016f p\u0159\u00edstupn\u00fdch lidem (obsluha stoj\u00edc\u00ed v bl\u00edzkosti p\u00e1su) je zp\u011btn\u00fd doraz \u010dasto p\u0159edeps\u00e1n bezpe\u010dnostn\u00edmi p\u0159edpisy bez ohledu na stav blokov\u00e1n\u00ed \u0161nekov\u00e9ho p\u0159evodu. U vzd\u00e1len\u00fdch nebo bezobslu\u017en\u00fdch dopravn\u00edk\u016f je zp\u011btn\u00fd doraz rozhodnut\u00edm zalo\u017een\u00fdm na d\u016fsledc\u00edch ud\u00e1losti zp\u011btn\u00e9ho chodu \u2013 rozlit\u00ed materi\u00e1lu, po\u0161kozen\u00ed p\u00e1su nebo bezpe\u010dnostn\u00ed riziko.<\/p>\n<\/details>\n

\nOt\u00e1zka: Jak vypo\u010d\u00edt\u00e1m napnut\u00ed \u0159emene pro dimenzov\u00e1n\u00ed p\u00e1ru \u0161nekov\u00fdch kol?<\/summary>\n

Nap\u011bt\u00ed \u0159emenu pro dimenzov\u00e1n\u00ed \u0161nekov\u00e9ho p\u0159evodu je efektivn\u00ed nap\u011bt\u00ed na hnac\u00edm bubnu \u2013 rozd\u00edl mezi nap\u011bt\u00edm na napjat\u00e9 a voln\u00e9 stran\u011b vyn\u00e1soben\u00fd koeficientem t\u0159en\u00ed na povrchu bubnu. Pro odhad v prvn\u00edm pr\u016fchodu: F_eff = (hmotnost na metr \u00d7 d\u00e9lka \u0159emenu \u00d7 g \u00d7 (\u00b5_r \u00d7 cos \u03b8 + sin \u03b8)) + (F_materi\u00e1l \u00d7 rychlost \u0159emenu), kde \u00b5_r je koeficient t\u0159en\u00ed v\u00e1le\u010dk\u016f (0,02 a\u017e 0,05 pro standardn\u00ed v\u00e1le\u010dky), \u03b8 je \u00fahel sklonu a F_materi\u00e1l je odpor specifick\u00fd pro dan\u00fd materi\u00e1l. Pro p\u0159esn\u00fd v\u00fdpo\u010det pou\u017eijte metodiku DIN 22101 (norma pro p\u00e1sov\u00e9 dopravn\u00edky) nebo CEMA (Asociace v\u00fdrobc\u016f dopravn\u00edkov\u00fdch za\u0159\u00edzen\u00ed). Renomovan\u00ed dodavatel\u00e9 \u0161nekov\u00fdch p\u0159evod\u016f ov\u011b\u0159\u00ed v\u00e1\u0161 v\u00fdpo\u010det napnut\u00ed \u0159emenu jako sou\u010d\u00e1st slu\u017eby dimenzov\u00e1n\u00ed ozuben\u00fdch kol, pokud poskytnete d\u00e9lku \u0159emenu, rychlost, sklon a hustotu materi\u00e1lu.<\/p>\n<\/details>\n

\nOt\u00e1zka: Jak\u00e1 je typick\u00e1 \u017eivotnost \u0161nekov\u00e9ho p\u0159evodu na dopravn\u00edku pracuj\u00edc\u00edm na dv\u011b sm\u011bny denn\u011b?<\/summary>\n

U spr\u00e1vn\u011b specifikovan\u00e9ho p\u00e1ru (spr\u00e1vn\u00fd jmenovit\u00fd kroutic\u00ed moment s provozn\u00edm faktorem, spr\u00e1vn\u00fd po\u010det start\u016f pro dan\u00fd sklon, spr\u00e1vn\u00fd materi\u00e1l pro dan\u00e9 prost\u0159ed\u00ed) je typick\u00e1 \u017eivotnost 4 a\u017e 8 let p\u0159i dvousm\u011bnn\u00e9m provozu (5 000 a\u017e 6 000 hodin ro\u010dn\u011b). Prim\u00e1rn\u00edm prvkem podl\u00e9haj\u00edc\u00edm opot\u0159eben\u00ed je bronzov\u00e9 kolo \u2013 ocelov\u00fd \u0161nek obvykle vydr\u017e\u00ed d\u00e9le ne\u017e 2 a\u017e 3 v\u00fdm\u011bny kol. V\u016fli sledujte ka\u017edoro\u010dn\u011b; pokud v\u016fle dos\u00e1hne dvojn\u00e1sobku hodnoty uveden\u00e9 v dodac\u00edm certifik\u00e1tu, napl\u00e1nujte v\u00fdm\u011bnu kola v p\u0159\u00ed\u0161t\u00edm servisn\u00edm okn\u011b. U t\u0159\u00edsm\u011bnn\u00e9ho provozu nebo nep\u0159etr\u017eit\u00e9ho provozu 24 hodin denn\u011b, 7 dn\u00ed v t\u00fddnu sni\u017ete o\u010dek\u00e1vanou \u017eivotnost na 2,5 a\u017e 5 let v d\u016fsledku akumulovan\u00e9ho tepeln\u00e9ho zat\u00ed\u017een\u00ed a opot\u0159eben\u00ed. Specifikace brou\u0161en\u00e9 povrchov\u00e9 \u00fapravy (Ra 0,4 \u00b5m) \u0161neku prodlu\u017euje \u017eivotnost kola zhruba o 30 a\u017e 50 procent ve srovn\u00e1n\u00ed s pouze odvalovanou povrchovou \u00fapravou (Ra 1,6 \u00b5m) d\u00edky zlep\u0161en\u00e9 tvorb\u011b mazac\u00edho filmu.<\/p>\n<\/details>\n<\/div>\n

<\/p>\n

P\u00e1sov\u00e9 dopravn\u00edky jsou p\u00e1te\u0159\u00ed pr\u016fmyslov\u00e9 manipulace s materi\u00e1lem a \u0161nekov\u00fd p\u0159evod je hnac\u00ed komponentou, kter\u00e1 zaji\u0161\u0165uje funk\u010dnost v\u011bt\u0161iny z nich. Tabulka rozhodnut\u00ed o \u00fahlu sklonu rozd\u011bluje specifikaci na dv\u011b jasn\u00e9 cesty: horizont\u00e1ln\u00ed a m\u00edrn\u00e9 sklony pou\u017e\u00edvaj\u00ed v\u00edcestup\u0148ov\u00e9 p\u00e1ry pro efektivitu; st\u0159edn\u00ed a strm\u00e9 sklony pou\u017e\u00edvaj\u00ed jednostup\u0148ov\u00e9 p\u00e1ry pro samosvornou ochranu proti zp\u011btn\u00e9mu p\u0159evodu. Mezi 8 a 12 stupni z\u00e1vis\u00ed rozhodnut\u00ed na hmotnosti materi\u00e1lu a d\u016fsledc\u00edch zp\u011btn\u00e9ho p\u0159evodu. Spou\u0161t\u011bc\u00ed moment na zat\u00ed\u017een\u00e9m p\u00e1su dosahuje 1,5 a\u017e 2,5n\u00e1sobku ust\u00e1len\u00e9ho provozn\u00edho momentu \u2013 co\u017e je nej\u010dast\u011bji opom\u00edjen\u00fd faktor dimenzov\u00e1n\u00ed p\u0159i n\u00e1kupu \u0161nekov\u00e9ho p\u0159evodu dopravn\u00edku. P\u00e1rov\u00e1n\u00ed materi\u00e1l\u016f se \u0159\u00edd\u00ed prost\u0159ed\u00edm: standardn\u00ed fosforov\u00fd bronz pro \u010dist\u00e9 vnit\u0159n\u00ed prostory, hlin\u00edkov\u00fd bronz nebo nerezov\u00e1 ocel pro mokr\u00e9 a oplachovan\u00e9 aplikace, kalen\u00fd ocelov\u00fd \u0161nek s odst\u0159ediv\u011b lit\u00fdm bronzem pro pra\u0161n\u00e9 t\u011b\u017eebn\u00ed aplikace. Rozd\u00edl v n\u00e1kladech mezi spr\u00e1vn\u00fdm a chybn\u00fdm rozhodnut\u00edm se m\u011b\u0159\u00ed v pl\u00fdtv\u00e1n\u00ed energi\u00ed, nehod\u00e1ch zp\u016fsoben\u00fdch zp\u011btn\u00fdm p\u0159evodem nebo p\u0159ed\u010dasn\u00e9m selh\u00e1n\u00ed \u2013 to v\u0161e p\u0159esahuje n\u00e1klady na samotn\u00e9 p\u00e1ry ozuben\u00fdch kol v prvn\u00edm roce provozu.<\/p>\n

Pro korejsk\u00e9 a japonsk\u00e9 v\u00fdrobce dopravn\u00edk\u016f, kte\u0159\u00ed specifikuj\u00ed p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f pro nov\u00e9 v\u00fdrobn\u00ed linky nebo programy v\u00fdm\u011bny, na\u0161e technick\u00e9 odd\u011blen\u00ed provede tabulku pro rozhodov\u00e1n\u00ed o \u00fahlu sklonu a v\u00fdpo\u010det spou\u0161t\u011bc\u00edho momentu s ohledem na specifick\u00e9 parametry va\u0161eho \u0159emene. Standardn\u00ed katalog fosforov\u011b bronzov\u00e9 \u0161nekov\u00e9 p\u0159evodovky<\/a> Pokr\u00fdv\u00e1 rozte\u010de st\u0159ed\u016f od 50 do 250 mm v konfigurac\u00edch od jednoho do \u010dty\u0159 chod\u016f. K dispozici jsou zak\u00e1zkov\u00e9 kombinace materi\u00e1l\u016f (nerezov\u00e1 ocel, hlin\u00edkov\u00fd bronz, kalen\u00e9) s dodac\u00ed lh\u016ftou 4 a\u017e 6 t\u00fddn\u016f \u2013 ode\u0161lete popt\u00e1vku specifikace pohonu dopravn\u00edku<\/a> Po\u0161lete n\u00e1m po\u017eadavek s parametry va\u0161eho \u0159emenu a n\u00e1\u0161 t\u00fdm v\u00e1m do jednoho korejsk\u00e9ho pracovn\u00edho dne vr\u00e1t\u00ed kompletn\u00ed doporu\u010den\u00ed pro p\u00e1r \u0161nekov\u00fdch kol.<\/p>\n

<\/p>\n

\n

Dimenzov\u00e1n\u00ed \u0161nekov\u00e9ho p\u0159evodu pro nov\u00fd nebo st\u00e1vaj\u00edc\u00ed p\u00e1sov\u00fd dopravn\u00edk?<\/h3>\n

Za\u0161lete rychlost \u0159emene, napnut\u00ed \u0159emene (nebo v\u00fdkon a p\u0159evodov\u00fd pom\u011br motoru), \u00fahel sklonu a popis prost\u0159ed\u00ed. Zkontrolujeme tabulku \u00fahl\u016f sklonu, vypo\u010d\u00edt\u00e1me spou\u0161t\u011bc\u00ed moment, doporu\u010d\u00edme spr\u00e1vn\u00fd po\u010det spu\u0161t\u011bn\u00ed a nab\u00eddneme standardn\u00ed i zak\u00e1zkov\u00e9 materi\u00e1lov\u00e9 varianty \u2013 obvykle do jednoho korejsk\u00e9ho pracovn\u00edho dne.<\/p>\n

Vy\u017e\u00e1dejte si specifikaci pohonu dopravn\u00edku \u2192<\/a><\/p>\n<\/div>\n

upravit u\u017eivatelem cxm<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Korea Ever-Power \u00b7 Application Engineering Guide Worm and Worm Wheel for Belt Conveyor Drives \u2014 Anti-Rollback Guide A horizontal conveyor needs efficiency. An inclined conveyor needs anti-rollback. The tipping point sits around 10 degrees of incline \u2014 below it, a multi-start worm gear pair saves energy; above it, a single-start pair prevents the loaded belt […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[2821],"tags":[],"class_list":["post-1352","post","type-post","status-publish","format-standard","hentry","category-worm-and-worm-wheel"],"_links":{"self":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts\/1352","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/comments?post=1352"}],"version-history":[{"count":1,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts\/1352\/revisions"}],"predecessor-version":[{"id":1354,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts\/1352\/revisions\/1354"}],"wp:attachment":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/media?parent=1352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/categories?post=1352"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/tags?post=1352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}