{"id":3314,"date":"2026-05-14T03:32:59","date_gmt":"2026-05-14T03:32:59","guid":{"rendered":"https:\/\/sprocket-chain.net\/?p=3314"},"modified":"2026-05-14T03:32:59","modified_gmt":"2026-05-14T03:32:59","slug":"pintle-chain-and-drag-chain","status":"publish","type":"post","link":"https:\/\/sprocket-chain.net\/cs\/pintle-chain-and-drag-chain\/","title":{"rendered":"\u010cepov\u00fd \u0159et\u011bz a vle\u010dn\u00fd \u0159et\u011bz: Specifikace a pou\u017eit\u00ed pro dopravu t\u011b\u017ek\u00fdch sypk\u00fdch materi\u00e1l\u016f"},"content":{"rendered":"
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Manipulace sypk\u00fdch materi\u00e1l\u016f<\/div>\n
Cement \u00b7 Kamenivo \u00b7 Obilniny \u00b7 T\u011b\u017eba<\/div>\n<\/div>\n

\u010cepov\u00fd \u0159et\u011bz a vle\u010dn\u00fd \u0159et\u011bz: Specifikace a pou\u017eit\u00ed pro dopravu t\u011b\u017ek\u00fdch sypk\u00fdch materi\u00e1l\u016f<\/h1>\n

Standardn\u00ed v\u00e1le\u010dkov\u00fd \u0159et\u011bz nen\u00ed ur\u010den pro podm\u00ednky, kter\u00e9 dominuj\u00ed p\u0159i doprav\u011b sypk\u00fdch materi\u00e1l\u016f \u2013 p\u0159\u00edm\u00fd kontakt s abrazivn\u00edm materi\u00e1lem, zat\u00ed\u017een\u00ed \u017elabem, vysok\u00e9 r\u00e1zy z velk\u00fdch kus\u016f a t\u00e9m\u011b\u0159 nep\u0159etr\u017eit\u00fd provoz p\u0159i n\u00edzk\u00e9 rychlosti. \u010cepov\u00e9 \u0159et\u011bzy a t\u011b\u017ek\u00e9 ta\u017een\u00e9 \u0159et\u011bzy existuj\u00ed jako samostatn\u00e9 kategorie produkt\u016f pr\u00e1v\u011b proto, \u017ee standardn\u00ed v\u00e1le\u010dkov\u00fd \u0159et\u011bz v t\u011bchto aplikac\u00edch rychle selh\u00e1v\u00e1.<\/p>\n

Vy\u017e\u00e1dejte si specifikaci \u010depu nebo ta\u017en\u00e9ho \u0159et\u011bzu<\/a><\/p>\n<\/div>\n<\/div>\n

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Beton\u00e1rna v Kjonggi-do vym\u011bnila za\u010d\u00e1tkem roku 2024 ji\u017e po\u010dtvrt\u00e9 za 18 m\u011bs\u00edc\u016f \u0159et\u011bz dopravn\u00edku pro regeneraci kameniva. Ka\u017ed\u00e1 v\u00fdm\u011bna prob\u011bhla se stejnou specifikac\u00ed \u2013 t\u011b\u017ek\u00fdm v\u00e1le\u010dkov\u00fdm \u0159et\u011bzem ANSI #120, kter\u00fd byl p\u0159izp\u016fsoben ozuben\u00fdm kol\u016fm 25T, kter\u00e1 se ji\u017e nach\u00e1zela v pohonu. \u0158et\u011bz m\u011bl spr\u00e1vnou rozte\u010d, spr\u00e1vn\u00e9 mezn\u00ed zat\u00ed\u017een\u00ed (na pap\u00edru) a spr\u00e1vnou d\u00e9lku. Pokra\u010doval v selh\u00e1v\u00e1n\u00ed po dobu 4\u20135 m\u011bs\u00edc\u016f na stejn\u00e9m m\u00edst\u011b \u2013 ve st\u0159edn\u00ed \u010d\u00e1sti spodn\u00edho \u00faseku, kde \u0159et\u011bz t\u00e1hl p\u0159\u00edmo nahromad\u011bn\u00fdm jemn\u00fdm kamenivem na dn\u011b \u017elabu. Zp\u016fsob selh\u00e1n\u00ed byl poka\u017ed\u00e9 stejn\u00fd: vn\u011bj\u0161\u00ed \u010dl\u00e1nkov\u00e9 desky opot\u0159ebovan\u00e9 uprost\u0159ed \u010dela, vn\u011bj\u0161\u00ed povrch v\u00e1lce opot\u0159ebovan\u00fd na kontaktn\u00ed stran\u011b a n\u011bkolik zad\u0159en\u00fdch spoj\u016f v d\u016fsledku nas\u00e1t\u00ed abraziva. Spr\u00e1vn\u00fdm \u0159e\u0161en\u00edm nebyl lep\u0161\u00ed druh v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu #120. Jednalo se o zm\u011bnu na kategorii produkt\u016f navr\u017eenou pro tento specifick\u00fd stav zat\u00ed\u017een\u00ed: \u010depov\u00fd \u0159et\u011bz s kalen\u00fdmi povrchy v\u00e1lce a otev\u0159enou konstrukc\u00ed v\u00e1lce, kter\u00e1 uvol\u0148uje zachycen\u00e9 abrazivo, m\u00edsto aby ho drtila do lo\u017eiskov\u00fdch ploch.<\/p>\n

\"\u0158et\u011bz<\/p>\n

Pochopen\u00ed rozd\u00edlu mezi v\u00e1le\u010dkov\u00fdm \u0159et\u011bzem, \u010depov\u00fdm \u0159et\u011bzem a vle\u010dn\u00fdm \u0159et\u011bzem \u2013 a toho, jak\u00e9 specifick\u00e9 konstruk\u010dn\u00ed vlastnosti ka\u017ed\u00fd z nich \u0159e\u0161\u00ed \u2013 je nezbytn\u00e9 pro spr\u00e1vn\u00fd v\u00fdb\u011br pro aplikace manipulace s t\u011b\u017ek\u00fdm sypk\u00fdm materi\u00e1lem.<\/p>\n

\u010cepov\u00fd \u0159et\u011bz: Struktura a konstruk\u010dn\u00ed zd\u016fvodn\u011bn\u00ed<\/h2>\n
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\u010cepov\u00fd \u0159et\u011bz (ASME B29.4, ISO 1977) je pojmenov\u00e1n podle pln\u00e9ho \u010depu \u2013 \u201e\u010depu\u201c \u2013 kter\u00fd tvo\u0159\u00ed spoj mezi \u010dl\u00e1nky. Na rozd\u00edl od standardn\u00edho v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu, kde je \u010dep uzav\u0159en v sestav\u011b pouzdra a v\u00e1le\u010dku, \u010depov\u00fd \u0159et\u011bzov\u00fd kloub pou\u017e\u00edv\u00e1 otev\u0159enou litou nebo kovanou bo\u010dn\u00ed ty\u010d (\u201ebo\u010dn\u00ed ty\u010d\u201c) s otev\u0159en\u00fdm h\u00e1kem nebo dr\u00e1\u017ekou, kter\u00e1 p\u0159ij\u00edm\u00e1 \u010dep sousedn\u00edho \u010dl\u00e1nku bez \u00fapln\u00e9ho uzav\u0159en\u00ed pouzdra.<\/p>\n

Kl\u00ed\u010dov\u00fdm konstruk\u010dn\u00edm prvkem, kter\u00fd odli\u0161uje \u010depov\u00fd \u0159et\u011bz od v\u00e1le\u010dkov\u00fdch \u0159et\u011bz\u016f v aplikac\u00edch sypk\u00fdch materi\u00e1l\u016f, je tato geometrie otev\u0159en\u00e9ho kloubu. Kdy\u017e abrazivn\u00ed materi\u00e1l vstoup\u00ed do standardn\u00edho otvoru pouzdra v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu, je zachycen mezi \u010depem a povrchem pouzdra a vytvo\u0159\u00ed abrazivn\u00ed sm\u011bs, kter\u00e1 se s ka\u017ed\u00fdm kloubem nep\u0159etr\u017eit\u011b brous\u00ed. U \u010depov\u00e9ho \u0159et\u011bzu otev\u0159en\u00fd kloub umo\u017e\u0148uje abrazivn\u00edm \u010d\u00e1stic\u00edm propadat skrz mezeru kloubu, sp\u00ed\u0161e ne\u017e aby byly zachyceny \u2013 \u0159et\u011bz se b\u011bhem provozu \u010d\u00e1ste\u010dn\u011b samo\u010dist\u00ed. Tento jedin\u00fd konstruk\u010dn\u00ed rozd\u00edl vede k dramaticky del\u0161\u00ed \u017eivotnosti v aplikac\u00edch, kde je kontakt s jemn\u00fdm abrazivn\u00edm materi\u00e1lem nevyhnuteln\u00fd.<\/p>\n<\/div>\n

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Rozm\u011bry kl\u00ed\u010de s \u010depov\u00fdm \u0159et\u011bzem<\/div>\n
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Rozsah t\u00f3n\u016f<\/span>38\u2013203 mm<\/span><\/div>\n
Pr\u016fm\u011br \u010depu<\/span>16\u201350 mm<\/span><\/div>\n
Materi\u00e1l odkazu<\/span>Litina \/ lit\u00e1 ocel<\/span><\/div>\n
Materi\u00e1l \u010depu<\/span>Kalen\u00e1 legovan\u00e1 ocel<\/span><\/div>\n
Maxim\u00e1ln\u00ed rychlost<\/span>Typicky 0,1\u20130,5 m\/s<\/span><\/div>\n
Rozsah mezn\u00ed s\u00edly<\/span>45\u2013500+ kN<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
Protiintuitivn\u00ed: geometrie otev\u0159en\u00e9ho kloubu \u010depov\u00e9ho \u0159et\u011bzu \u2013 kter\u00e1 se jev\u00ed jako konstruk\u010dn\u011b slab\u0161\u00ed ne\u017e pln\u011b uzav\u0159en\u00e1 sestava pouzdra a \u010depu \u2013 ve skute\u010dnosti poskytuje del\u0161\u00ed \u017eivotnost v abrazivn\u00edch ta\u017een\u00fdch aplikac\u00edch ne\u017e \u0159et\u011bzy s uzav\u0159en\u00fdm kloubem a vy\u0161\u0161\u00ed jmenovitou nosnost\u00ed.<\/strong> Mezn\u00ed zat\u00ed\u017een\u00ed litinov\u00e9ho \u010depov\u00e9ho \u0159et\u011bzu s rozte\u010d\u00ed 102 mm m\u016f\u017ee b\u00fdt pouze 180 kN \u2013 m\u00e9n\u011b ne\u017e u standardn\u00edho v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu ANSI #120 se 124,5 kN na pramen. U vle\u010dn\u00e9ho dopravn\u00edku kameniva v\u0161ak m\u016f\u017ee \u010depov\u00fd \u0159et\u011bz pracuj\u00edc\u00ed rychlost\u00ed 0,2 m\/s dos\u00e1hnout 8 000\u201312 000 hodin \u017eivotnosti p\u0159ed vy\u0159azen\u00edm, zat\u00edmco v\u00e1le\u010dkov\u00fd \u0159et\u011bz se srovnateln\u00fdm jmenovit\u00fdm zat\u00ed\u017een\u00edm sel\u017ee po 500\u2013800 hodin\u00e1ch v d\u016fsledku abrazivn\u00edho opot\u0159eben\u00ed \u010depu. Krit\u00e9riem v\u00fdb\u011bru pro aplikace v doprav\u011b sypk\u00fdch materi\u00e1l\u016f je odolnost proti opot\u0159eben\u00ed v provozn\u00edm m\u00e9diu, nikoli statick\u00e9 mezn\u00ed zat\u00ed\u017een\u00ed.<\/div>\n

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Standardn\u00ed \u0159ady \u010depov\u00fdch \u0159et\u011bz\u016f a jejich pou\u017eit\u00ed<\/h2>\n
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\u010c\u00edslo \u0159et\u011bzu<\/th>\nRozte\u010d (mm)<\/th>\nPr\u016fm\u011br \u010depu (mm)<\/th>\nMinim\u00e1ln\u00ed mezn\u00ed zat\u00ed\u017een\u00ed (kN)<\/th>\nTyp odkazu<\/th>\nPrim\u00e1rn\u00ed aplikace<\/th>\n<\/tr>\n<\/thead>\n
\u0158ada 32<\/td>\n101.6<\/td>\n25.4<\/td>\n111.0<\/td>\nLitinov\u00fd odsazen\u00fd bo\u010dn\u00ed panel<\/td>\nRekultivace kameniva, dopravn\u00edk p\u00edsku<\/td>\n<\/tr>\n
\u0158ada 42<\/td>\n101.6<\/td>\n31.8<\/td>\n156.0<\/td>\nLitinov\u00e1, t\u011b\u017e\u0161\u00ed bo\u010dn\u00ed li\u0161ta<\/td>\n\u0160t\u011brk, drcen\u00fd k\u00e1men, cementov\u00fd sl\u00ednek<\/td>\n<\/tr>\n
\u0158ada 51<\/td>\n152.4<\/td>\n38.1<\/td>\n178.0<\/td>\nLitina nebo lit\u00e1 ocel<\/td>\nNejb\u011b\u017en\u011bj\u0161\u00ed: cement, t\u011b\u017eba, ta\u017een\u00ed kameniva<\/td>\n<\/tr>\n
\u0158ada 55 (t\u011b\u017ek\u00e1)<\/td>\n152.4<\/td>\n44.5<\/td>\n267.0<\/td>\nLit\u00e1 ocel<\/td>\nT\u011b\u017ek\u00e9 kamenivo, lom, d\u016fln\u00ed fronta<\/td>\n<\/tr>\n
\u0158ada 62<\/td>\n203.2<\/td>\n50.8<\/td>\n356.0<\/td>\nT\u011b\u017ek\u00e1 lit\u00e1 ocel s \u00fachyty pro uchycen\u00ed oka<\/td>\nTermin\u00e1l pro velkoobjemov\u00fd odpad, velkokusov\u00e1 ruda, ocelov\u00fd \u0161rot<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Ploch\u00fd ta\u017een\u00fd \u0159et\u011bz: Kdy\u017e jsou pot\u0159eba \u0161krabky a utahov\u00e1ky<\/h2>\n

Zat\u00edmco \u010depov\u00fd \u0159et\u011bz je samodopravn\u00ed prvek (samotn\u00e9 t\u011blo \u0159et\u011bzu je v kontaktu s materi\u00e1lem), ploch\u00fd ta\u017een\u00fd \u0159et\u011bz je hnac\u00ed prvek, kter\u00fd nese samostatn\u00e9 \u00fachyty pro un\u00e1\u0161e\u010de materi\u00e1lu \u2013 ocelov\u00e9 ty\u010de nebo lopatky p\u0159iva\u0159en\u00e9 nebo p\u0159i\u0161roubovan\u00e9 k \u0159et\u011bzu v pravideln\u00fdch intervalech. Un\u00e1\u0161e\u010de materi\u00e1lu tla\u010d\u00ed materi\u00e1l vodorovn\u011b pod\u00e9l \u017elabu nebo p\u00e1nve, ani\u017e by se samotn\u00fd \u0159et\u011bz musel dot\u00fdkat materi\u00e1lu p\u0159\u00edmo.<\/p>\n

\"ozuben\u00e9<\/p>\n

Ploch\u00e9 ta\u017een\u00e9 \u0159et\u011bzy pou\u017e\u00edvaj\u00ed jako hnac\u00ed prvek jeden ze dvou typ\u016f \u0159et\u011bz\u016f: t\u011b\u017ek\u00fd v\u00e1le\u010dkov\u00fd \u0159et\u011bz in\u017een\u00fdrsk\u00e9 t\u0159\u00eddy (\u0159ada ASME B29.10 \u2013 viz \u010dl\u00e1nek 11 v t\u00e9to s\u00e9rii) s bo\u010dn\u00edmi upev\u0148ovac\u00edmi deskami pro uchycen\u00ed uchycen\u00ed nebo \u00fa\u010delov\u00fd sva\u0159ovan\u00fd ocelov\u00fd ta\u017een\u00fd \u0159et\u011bz, kde jsou bo\u010dn\u00ed ty\u010de \u0159et\u011bzu vyrobeny z tlust\u00e9ho konstruk\u010dn\u00edho ocelov\u00e9ho plechu s integrovan\u00fdmi upev\u0148ovac\u00edmi body pro uchycen\u00ed uchycen\u00ed.<\/p>\n

Rozte\u010d letek \u2013 vzd\u00e1lenost mezi po sob\u011b jdouc\u00edmi letkami \u2013 ur\u010duje hloubku vrstvy materi\u00e1lu ve \u017elabu. U jemn\u00fdch materi\u00e1l\u016f (zrno, jemn\u00e9 uhl\u00ed, pr\u00e1\u0161ky) udr\u017euje men\u0161\u00ed rozte\u010d letek (0,5\u20131\u00d7 \u0161\u00ed\u0159ka \u017elabu) rovnom\u011brnou hloubku materi\u00e1lu. U hrub\u0161\u00edch materi\u00e1l\u016f (velk\u00e9 kamenivo, d\u0159evn\u00ed \u0161t\u011bpka) sni\u017euje v\u011bt\u0161\u00ed rozte\u010d letek (1\u20132\u00d7 \u0161\u00ed\u0159ka \u017elabu) tahov\u00e9 zat\u00ed\u017een\u00ed \u0159et\u011bzu na letku t\u00edm, \u017ee umo\u017e\u0148uje materi\u00e1lu p\u0159irozen\u00fd tok, sp\u00ed\u0161e ne\u017e aby byl tla\u010den jako pevn\u00e1 z\u00e1tka.<\/p>\n

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Hromadn\u00fd vle\u010dn\u00fd dopravn\u00edk<\/div>\n

Materi\u00e1l vypl\u0148uje cel\u00fd pr\u016f\u0159ez \u017elabu. \u0158et\u011bz a un\u00e1\u0161ec\u00ed mechanismy se pohybuj\u00ed pomalu (0,05\u20130,2 m\/s) skrz hmotu materi\u00e1lu. Velmi vysok\u00e1 kapacita na jednotku s\u00edly \u0159et\u011bzu. Pou\u017e\u00edv\u00e1 se pro: obil\u00ed, pelety, pr\u00e1\u0161ky, jemn\u00e9 uhl\u00ed. Tah \u0159et\u011bzu se vypo\u010d\u00edt\u00e1 z objemov\u00e9 hmotnosti materi\u00e1lu \u00d7 pr\u016f\u0159ez \u017elabu \u00d7 d\u00e9lka \u00d7 sou\u010dinitel t\u0159en\u00ed.<\/p>\n

Po\u017eadavek na \u0159et\u011bz:<\/strong> vysok\u00e1 nosnost, n\u00edzk\u00e1 hmotnost \u0159et\u011bzu na metr, upev\u0148ovac\u00ed desky v pravideln\u00e9 rozte\u010di. Standardn\u011b je k dispozici \u017eenijn\u00ed t\u0159\u00edda #80H nebo #100H s \u00fachyty K2.<\/div>\n<\/div>\n
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Letov\u00fd dopravn\u00edk (otev\u0159en\u00fd)<\/div>\n

Materi\u00e1l le\u017e\u00ed ve vrstv\u00e1ch mezi nosn\u00edky v otev\u0159en\u00e9 p\u00e1nvi. Nosy posouvaj\u00ed materi\u00e1l vp\u0159ed. Mo\u017en\u00e1 vy\u0161\u0161\u00ed rychlost \u0159et\u011bzu (a\u017e 0,5 m\/s). Pou\u017eit\u00ed pro: kamenivo, d\u0159evn\u00ed \u0161t\u011bpku, demoli\u010dn\u00ed odpad, velk\u00e9 kusov\u00e9 materi\u00e1ly. \u0158et\u011bz je vystaven n\u00e1raz\u016fm velk\u00fdch kus\u016f.<\/p>\n

Po\u017eadavek na \u0159et\u011bz:<\/strong> Vysok\u00e1 odolnost proti n\u00e1raz\u016fm, kalen\u00e9 kontaktn\u00ed plochy. Pro aplikace s velk\u00fdmi kusy je standardn\u011b pou\u017eit \u0159et\u011bz t\u0159\u00eddy #120 nebo \u0159et\u011bz s \u010depov\u00fdm uchycen\u00edm.<\/div>\n<\/div>\n
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\u0160krabkov\u00fd dopravn\u00edk (podzemn\u00ed)<\/div>\n

\u0158et\u011bz t\u00e1hne \u0161krab\u00e1ky p\u0159\u00edmo po \u017elabu nebo povrchu zem\u011b. \u0158et\u011bz i \u0161krab\u00e1ky jsou opot\u0159ebiteln\u00e9 prvky. Vysok\u00e9 ta\u017en\u00e9 zat\u00ed\u017een\u00ed \u0159et\u011bzu v d\u016fsledku t\u0159en\u00ed materi\u00e1lu. Pou\u017e\u00edv\u00e1 se p\u0159i podzemn\u00ed doprav\u011b uhl\u00ed, kameniva a rudy tam, kde v\u00fd\u0161ka nad hlavou br\u00e1n\u00ed pou\u017eit\u00ed p\u00e1sov\u00fdch dopravn\u00edk\u016f.<\/p>\n

Po\u017eadavek na \u0159et\u011bz:<\/strong> Velmi vysok\u00e1 pevnost v tahu, vym\u011bniteln\u00e9 vn\u011bj\u0161\u00ed \u010dl\u00e1nkov\u00e9 desti\u010dky, slitina odoln\u00e1 proti opot\u0159eben\u00ed. Nejb\u011b\u017en\u011bj\u0161\u00ed specifikac\u00ed je \u0159et\u011bz \u0159ady 81X nebo 132 pro in\u017een\u00fdry.<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

V\u00fdpo\u010det tahu \u0159et\u011bzu pro vle\u010dn\u00e9 dopravn\u00edky: Metodika n\u00e1vrhov\u00e9ho zat\u00ed\u017een\u00ed<\/h2>\n

Prim\u00e1rn\u00edm konstruk\u010dn\u00edm v\u00fdpo\u010dtem pro jak\u00fdkoli \u0159et\u011bz vle\u010dn\u00e9ho dopravn\u00edku je tah \u0159et\u011bzu \u2013 tahov\u00e1 s\u00edla, kterou mus\u00ed \u0159et\u011bz p\u0159en\u00e1\u0161et mezi hnac\u00edm ozuben\u00fdm kolem a vratn\u00fdm kolem. Tah \u0159et\u011bzu ur\u010duje po\u017eadovan\u00e9 zat\u00ed\u017een\u00ed \u0159et\u011bzu p\u0159i p\u0159etr\u017een\u00ed (prost\u0159ednictv\u00edm konstruk\u010dn\u00edho sou\u010dinitele bezpe\u010dnosti), kter\u00e9 n\u00e1sledn\u011b ur\u010duje v\u00fdb\u011br \u0159ady \u0159et\u011bzu.<\/p>\n

\n
Z\u00e1kladn\u00ed vzorec pro tah \u0159et\u011bzu vle\u010dn\u00e9ho dopravn\u00edku<\/div>\n
F_celkem = F_materi\u00e1l + F_\u0159et\u011bzec + F_lety + F_gradient<\/p>\n

F_material = \u03c1 \u00d7 A \u00d7 L \u00d7 g \u00d7 \u03bc_m
\nF_chain = m_c \u00d7 L \u00d7 g \u00d7 (\u03bc_c + sin \u03b8)
\nF_lety = m_f \u00d7 N_f \u00d7 g \u00d7 \u03bc_f
\nF_gradient = (\u03c1 \u00d7 A \u00d7 L + m_c \u00d7 L) \u00d7 g \u00d7 sin \u03b8<\/p><\/div>\n

\n
\u03c1<\/strong> = objemov\u00e1 hmotnost (kg\/m\u00b3) \u00b7\u00a0 A<\/strong> = plocha pr\u016f\u0159ezu \u017elabu (m\u00b2)
\nL<\/strong> = d\u00e9lka dopravn\u00edku (m) \u00b7\u00a0 G<\/strong> = 9,81 m\/s\u00b2
\n\u03bcm<\/strong> = sou\u010dinitel t\u0159en\u00ed materi\u00e1lu o \u017el\u00e1bek<\/div>\n
m_c<\/strong> = hmotnost \u0159et\u011bzu na metr (kg\/m) \u00b7\u00a0 \u03bc_c<\/strong> = t\u0159en\u00ed \u0159et\u011bzu o \u017el\u00e1bek
\nm_f<\/strong> = letov\u00e1 hmotnost (kg) \u00b7\u00a0 N_f<\/strong> = po\u010det let\u016f
\n\u03b8<\/strong> = \u00fahel sklonu<\/div>\n<\/div>\n<\/div>\n

Typick\u00e9 koeficienty t\u0159en\u00ed pro konstrukci \u0159et\u011bzov\u00e9ho dopravn\u00edku: materi\u00e1l na ocelov\u00e9m \u017elabu \u2014 0,4\u20130,6 pro such\u00e9 kamenivo, 0,5\u20130,7 pro mokr\u00fd p\u00edsek, 0,25\u20130,35 pro zrno. \u0158et\u011bz na ocelov\u00e9m \u017elabu \u2014 0,1\u20130,2 s maz\u00e1n\u00edm, 0,25\u20130,35 bez maz\u00e1n\u00ed. \u0158et\u011bz na ot\u011bruvzdorn\u00e9 plastov\u00e9 vlo\u017ece \u2014 0,08\u20130,15. Tyto koeficienty jsou dominantn\u00edmi prom\u011bnn\u00fdmi p\u0159i v\u00fdpo\u010dtu tahu \u0159et\u011bzu \u2013 zm\u011bna z ocelov\u00e9ho \u017elabu na vlo\u017eku z ultravysoce t\u011b\u017ek\u00fdch kov\u016f (UHMW) sni\u017euje tah \u0159et\u011bzu o 35\u2013451 TP3T, co\u017e umo\u017e\u0148uje v\u00fdrazn\u011b men\u0161\u00ed (a levn\u011bj\u0161\u00ed) \u0159adu \u0159et\u011bz\u016f.<\/p>\n

Po\u017eadovan\u00e9 mezn\u00ed zat\u00ed\u017een\u00ed \u0159et\u011bzu se vypo\u010d\u00edt\u00e1 z ta\u017en\u00e9 s\u00edly \u0159et\u011bzu: Mezn\u00ed zat\u00ed\u017een\u00ed \u2265 F_total \u00d7 sou\u010dinitel bezpe\u010dnosti. CEMA (Asociace v\u00fdrobc\u016f dopravn\u00edkov\u00fdch za\u0159\u00edzen\u00ed) doporu\u010duje pro vle\u010dn\u00e9 dopravn\u00edky sypk\u00fdch materi\u00e1l\u016f sou\u010dinitel bezpe\u010dnosti 6\u20138 \u2013 co\u017e je v\u00fdrazn\u011b v\u00edce ne\u017e sou\u010dinitele 3\u20135 pou\u017e\u00edvan\u00e9 pro standardn\u00ed v\u00e1le\u010dkov\u00e9 \u0159et\u011bzy pro p\u0159enos v\u00fdkonu. Vy\u0161\u0161\u00ed sou\u010dinitel zohled\u0148uje r\u00e1zov\u00e9 a n\u00e1razov\u00e9 zat\u00ed\u017een\u00ed od kusov\u00e9ho materi\u00e1lu vstupuj\u00edc\u00edho do dopravn\u00edku, kter\u00e9 m\u016f\u017ee zp\u016fsobit okam\u017eit\u00e9 \u0161pi\u010dkov\u00e9 s\u00edly 2\u20134\u00d7 v\u011bt\u0161\u00ed ne\u017e je ust\u00e1len\u00e1 tahov\u00e1 s\u00edla \u0159et\u011bzu. U kameniva s maxim\u00e1ln\u00ed velikost\u00ed kus\u016f nad 50 mm by se m\u011bl na F_materi\u00e1l p\u0159ed vyn\u00e1soben\u00edm sou\u010dinitelem bezpe\u010dnosti pou\u017e\u00edt sou\u010dinitel n\u00e1razu 1,5\u20132,0.<\/p>\n

<\/p>\n

Posouzen\u00ed opot\u0159eben\u00ed a \u0159\u00edzen\u00ed \u017eivotnosti vle\u010dn\u00fdch a \u010depov\u00fdch \u0159et\u011bz\u016f<\/h2>\n

Standardn\u00ed posouzen\u00ed opot\u0159eben\u00ed v\u00e1le\u010dkov\u00fdch \u0159et\u011bz\u016f (m\u011b\u0159en\u00ed prodlou\u017een\u00ed \u010depu a pouzdra) se vztahuje na \u0159et\u011bzy konstruk\u010dn\u00ed t\u0159\u00eddy pou\u017e\u00edvan\u00e9 jako pohonn\u00e9 prvky vle\u010dn\u00fdch dopravn\u00edk\u016f. U \u010depov\u00fdch \u0159et\u011bz\u016f je prim\u00e1rn\u00ed m\u011b\u0159en\u00ed opot\u0159eben\u00ed odli\u0161n\u00e9: proto\u017ee \u010dep (kol\u00edk) dosed\u00e1 p\u0159\u00edmo na bo\u010dn\u00ed li\u0161tu lit\u00e9ho \u010dl\u00e1nku, m\u011b\u0159en\u00edm opot\u0159eben\u00ed je zmen\u0161en\u00ed pr\u016fm\u011bru \u010depu, nikoli prodlou\u017een\u00ed rozte\u010de \u010dl\u00e1nku. Norma ASME B29.4 doporu\u010duje vym\u011bnit \u010depov\u00fd \u0159et\u011bz, kdy\u017e se pr\u016fm\u011br \u010depu zmen\u0161\u00ed o v\u00edce ne\u017e 10% p\u016fvodn\u00edho pr\u016fm\u011bru v jak\u00e9mkoli m\u011b\u0159en\u00e9m bod\u011b pod\u00e9l d\u00e9lky \u0159et\u011bzu.<\/p>\n

\"animace<\/p>\n

Zm\u011b\u0159te pr\u016fm\u011br \u010depu pomoc\u00ed vn\u011bj\u0161\u00edch posuvn\u00fdch m\u011b\u0159idel na t\u0159ech m\u00edstech pod\u00e9l ka\u017ed\u00e9ho \u010depu: uprost\u0159ed rozte\u010de a na obou konc\u00edch do 10 mm od otvoru bo\u010dn\u00ed li\u0161ty. Opot\u0159eben\u00ed uprost\u0159ed rozte\u010de indikuje provozn\u00ed kontakt s otvorem bo\u010dn\u00ed li\u0161ty b\u011bhem provozu. Opot\u0159eben\u00ed konc\u016f indikuje nesouosost mezi dv\u011bma otvory bo\u010dn\u00ed li\u0161ty v sousedn\u00edch \u010dl\u00e1nc\u00edch \u2013 zn\u00e1mka kroucen\u00ed nebo bo\u010dn\u00edho zat\u00ed\u017een\u00ed \u0159et\u011bzu. Pokud opot\u0159eben\u00ed konc\u016f p\u0159ekra\u010duje opot\u0159eben\u00ed uprost\u0159ed rozte\u010de, \u0159et\u011bz je vystaven bo\u010dn\u00edmu zat\u00ed\u017een\u00ed, kter\u00e9 nen\u00ed sou\u010d\u00e1st\u00ed konstrukce \u2013 zkontrolujte nesouosost \u017elabu, zkosen\u00ed \u0159et\u011bzov\u00e9ho kola a zasek\u00e1v\u00e1n\u00ed una\u0161e\u010de na st\u011bn\u00e1ch \u017elabu.<\/p>\n

U \u0159et\u011bz\u016f vle\u010dn\u00fdch dopravn\u00edk\u016f s \u00fachyty pro utahov\u00e1n\u00ed se opot\u0159eben\u00ed utahovac\u00ed li\u0161ty posuzuje odd\u011blen\u011b od opot\u0159eben\u00ed \u0159et\u011bzu. Utahovac\u00ed li\u0161ty se t\u00e1hnou p\u0159\u00edmo po vlo\u017ek\u00e1ch \u017elab\u016f a opot\u0159ebov\u00e1vaj\u00ed se zespodu \u2013 opot\u0159eben\u00ed spodn\u00ed plochy je viditeln\u00e9 a m\u011b\u0159iteln\u00e9. Utahovac\u00ed li\u0161ty vym\u011b\u0148te, kdy\u017e se spodn\u00ed plocha opot\u0159ebuje o v\u00edce ne\u017e 50% p\u016fvodn\u00ed v\u00fd\u0161ky li\u0161ty nebo kdy\u017e je profil zadn\u00ed hrany erodov\u00e1n do t\u00e9 m\u00edry, \u017ee se materi\u00e1l val\u00ed po li\u0161t\u011b, m\u00edsto aby byl tla\u010den dop\u0159edu. \u0158et\u011bz in\u017een\u00fdrsk\u00e9 t\u0159\u00eddy a t\u011b\u017ek\u00fd ta\u017een\u00fd \u0159et\u011bz pro aplikace sypk\u00fdch materi\u00e1l\u016f<\/a> je k dispozici s odpov\u00eddaj\u00edc\u00edmi specifikacemi uchycen\u00ed letu.<\/p>\n

<\/p>\n

V\u00fdb\u011br materi\u00e1lu \u010dep\u016f a hnac\u00ed \u0159et\u011bzy: uhl\u00edkov\u00e1 ocel vs. legovan\u00e1 ocel vs. litina<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Materi\u00e1l odkazu<\/th>\nTvrdost (HB)<\/th>\nOdolnost proti od\u011bru<\/th>\nOdolnost proti n\u00e1razu<\/th>\nRelativn\u00ed n\u00e1klady<\/th>\nNejlep\u0161\u00ed aplikace<\/th>\n<\/tr>\n<\/thead>\n
Standardn\u00ed litina<\/td>\n170\u2013220<\/td>\nM\u00edrn\u00fd<\/td>\nN\u00edzk\u00fd \u2014 k\u0159ehk\u00fd lom p\u0159i n\u00e1razu<\/td>\nNejni\u017e\u0161\u00ed<\/td>\nJemn\u00e9 materi\u00e1ly, n\u00edzk\u00fd r\u00e1z, cement (pros\u00edtovan\u00fd)<\/td>\n<\/tr>\n
Temperovan\u00e1 litina<\/td>\n180\u2013240<\/td>\nDobr\u00fd<\/td>\nM\u00edrn\u00fd<\/td>\nN\u00edzk\u00fd a\u017e st\u0159edn\u00ed<\/td>\nObiln\u00e9, uheln\u00e9, st\u0159edn\u011b kusov\u00e9 kamenivo<\/td>\n<\/tr>\n
Lit\u00e1 ocel (tepeln\u011b zpracovan\u00e1)<\/td>\n280\u2013360<\/td>\nVysok\u00fd<\/td>\nVysok\u00fd<\/td>\nM\u00edrn\u00fd<\/td>\nKamenivo, drcen\u00fd k\u00e1men, velkokusov\u00e1 ruda<\/td>\n<\/tr>\n
Litina s vysok\u00fdm obsahem chromu<\/td>\n450\u2013600<\/td>\nVelmi vysok\u00e1<\/td>\nN\u00edzk\u00e9 \u2013 pou\u017e\u00edvejte pouze s n\u00edzk\u00fdm r\u00e1zov\u00fdm zat\u00ed\u017een\u00edm<\/td>\nVysok\u00fd<\/td>\nJemn\u00e9 kamenivo s vysok\u00fdm obsahem oxidu k\u0159emi\u010dit\u00e9ho, sklen\u011bn\u00e9 st\u0159epy, abrazivn\u00ed pr\u00e1\u0161ek<\/td>\n<\/tr>\n
Legovan\u00e1 ocel (kovan\u00e1)<\/td>\n300\u2013400<\/td>\nVysok\u00fd<\/td>\nVelmi vysok\u00e1<\/td>\nVysok\u00fd<\/td>\nT\u011b\u017ek\u00e1 t\u011b\u017eba, ocelov\u00fd \u0161rot, demoli\u010dn\u00ed sutiny<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

Aplikace specifick\u00e9 pro dan\u00e9 odv\u011btv\u00ed v Koreji a jihov\u00fdchodn\u00ed Asii<\/h2>\n

Beton\u00e1rny a beton\u00e1rny na v\u00fdrobu kameniva.<\/strong> \u00davodn\u00ed p\u0159\u00edklad v tomto \u010dl\u00e1nku je reprezentativn\u00ed pro nejb\u011b\u017en\u011bj\u0161\u00ed aplikaci \u010depov\u00fdch \u0159et\u011bz\u016f v korejsk\u00e9 v\u00fdrob\u011b \u2013 dopravn\u00edky pro regeneraci kameniva pod skladovac\u00edmi rampami, kter\u00e9 p\u0159epravuj\u00ed drcen\u00fd k\u00e1men, p\u00edsek a sm\u011bs kameniva ze skladu do d\u00e1vkovac\u00edho syst\u00e9mu. Spr\u00e1vn\u00e1 specifikace je \u010depov\u00fd \u0159et\u011bz z lit\u00e9 oceli \u0159ady 42 nebo 51 pro aplikace s drcen\u00fdm kamenivem (maxim\u00e1ln\u00ed velikost hrudek 40\u201360 mm, objemov\u00e1 hmotnost 1 600\u20131 800 kg\/m\u00b3). Pro regeneraci jemn\u00e9ho p\u00edsku je dosta\u010duj\u00edc\u00ed a levn\u011bj\u0161\u00ed temperovan\u00e1 litina \u0159ady 42. \u0158et\u011bzov\u00e1 kola z lit\u00e9 oceli s kalen\u00fdmi zuby<\/a> jsou pro tyto aplikace specifikov\u00e1ny vedle \u0159et\u011bzu \u2013 tvrdost zub\u016f \u0159et\u011bzov\u00e9ho kola mus\u00ed b\u00fdt p\u0159izp\u016fsobena tvrdosti materi\u00e1lu \u0159et\u011bzu, aby se zabr\u00e1nilo p\u0159ednostn\u00edmu opot\u0159eben\u00ed m\u011bk\u010d\u00ed sou\u010d\u00e1sti.<\/p>\n

\"ozuben\u00e9<\/p>\n

V\u00fdroba cementu.<\/strong> Korejsk\u00e9 cement\u00e1rny (provozy Ssangyong, Asia a Hanil) pou\u017e\u00edvaj\u00ed p\u0159i manipulaci se surovinami v\u00edcestup\u0148ov\u00e9 vle\u010dn\u00e9 dopravn\u00edky, vstupn\u00ed dopravn\u00edky do pec\u00ed a \u0159et\u011bzy chladi\u010de sl\u00ednku. Vstupn\u00ed dopravn\u00edk cementov\u00e9 pece je vystaven nejn\u00e1ro\u010dn\u011bj\u0161\u00edm podm\u00ednk\u00e1m \u2013 sl\u00ednek o teplot\u011b 100\u2013200 \u00b0C, velk\u00e9 nepravideln\u00e9 hrudky a\u017e do velikosti 80 mm a abrazivn\u00ed silik\u00e1tov\u00fd prach. Standardn\u00ed specifikac\u00ed pro tuto pozici je \u010depov\u00fd \u0159et\u011bz z lit\u00e9 oceli \u0159ady 55 s tepeln\u011b odolnou \u010depovou slitinou. Vstupn\u00ed \u0159et\u011bz pece obvykle pracuje rychlost\u00ed 0,05\u20130,15 m\/s a v dob\u0159e udr\u017eovan\u00fdch z\u00e1vodech se vym\u011b\u0148uje v r\u00e1mci dvoulet\u00e9ho pl\u00e1novan\u00e9ho cyklu \u00fadr\u017eby, na rozd\u00edl od 6\u20139 m\u011bs\u00edc\u016f u standardn\u00edho v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu in\u017een\u00fdrsk\u00e9 t\u0159\u00eddy, kter\u00fd byl d\u0159\u00edve specifikov\u00e1n u star\u0161\u00edch za\u0159\u00edzen\u00ed.<\/p>\n

Kore\u010dkov\u00e9 elev\u00e1tory pro obiln\u00e9 dru\u017estvo.<\/strong> Korejsk\u00e1 infrastruktura pro skladov\u00e1n\u00ed obil\u00ed v zem\u011bd\u011blsk\u00fdch dru\u017estvech vyu\u017e\u00edv\u00e1 hromadn\u00e9 vle\u010dn\u00e9 dopravn\u00edky pro horizont\u00e1ln\u00ed p\u0159epravu obil\u00ed mezi z\u00e1sobn\u00edky a zpracovatelsk\u00fdmi za\u0159\u00edzen\u00edmi. Materi\u00e1lem je obil\u00ed (sypn\u00e1 hmotnost 700\u2013800 kg\/m\u00b3, co\u017e je ve srovn\u00e1n\u00ed s miner\u00e1ln\u00edmi aplikacemi prakticky neabrazivn\u00ed) p\u0159i n\u00edzk\u00fdch rychlostech \u0159et\u011bzu (0,05\u20130,12 m\/s). Pro tyto aplikace je standardem \u010depov\u00fd \u0159et\u011bz z tv\u00e1rn\u00e9 litiny nebo t\u011b\u017ek\u00fd v\u00e1le\u010dkov\u00fd \u0159et\u011bz stroj\u00edrensk\u00e9 t\u0159\u00eddy s nerezov\u00fdmi upev\u0148ovac\u00edmi deskami \u2013 po\u017eadavek na od\u011br je n\u00edzk\u00fd a dominantn\u00edm po\u017eadavkem je ochrana proti korozi (p\u0159ed vlhkost\u00ed obil\u00ed a poskliz\u0148ov\u00fdm oplachem).<\/p>\n

T\u011b\u017eba a dob\u00fdv\u00e1n\u00ed ve Vietnamu a Indon\u00e9sii.<\/strong> Exportn\u00ed z\u00e1kazn\u00edci z jihov\u00fdchodn\u00ed Asie, kte\u0159\u00ed se zab\u00fdvaj\u00ed zpracov\u00e1n\u00edm kameniva a nerostn\u00fdch surovin, tvo\u0159\u00ed v\u00fdznamnou \u010d\u00e1st dod\u00e1vek \u010depov\u00fdch \u0159et\u011bz\u016f spole\u010dnosti Korea Ever-Power \u2013 filip\u00ednsk\u00e9 zpracovatelsk\u00e9 z\u00e1vody na niklov\u00fd laterit, p\u00e1sov\u00e9 podava\u010de v indon\u00e9sk\u00fdch uheln\u00fdch termin\u00e1lech a vietnamsk\u00e9 dopravn\u00edky na regeneraci z cement\u00e1ren pou\u017e\u00edvaj\u00ed specifikace \u010depov\u00fdch \u0159et\u011bz\u016f \u0159ady 51 a 55. Dodac\u00ed lh\u016fta pro \u00fadr\u017eb\u00e1\u0159sk\u00e9 operace v jihov\u00fdchodn\u00ed Asii \u2013 obvykle 3\u20136 t\u00fddn\u016f u polo\u017eek, kter\u00e9 nejsou skladem \u2013 znamen\u00e1, \u017ee tito z\u00e1kazn\u00edci v\u00fdznamn\u011b t\u011b\u017e\u00ed z korejsk\u00fdch skladov\u00fdch z\u00e1sob b\u011b\u017en\u00fdch rozm\u011br\u016f a rozte\u010d\u00ed \u0159ad oproti 12\u201320 t\u00fddn\u016fm u p\u0159\u00edm\u00e9ho n\u00e1kupu od v\u00fdrobce.<\/p>\n

<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
\nLze v aplikac\u00edch s agreg\u00e1tn\u00edm ta\u017een\u00edm pou\u017e\u00edt v\u00e1le\u010dkov\u00fd \u0159et\u011bz in\u017een\u00fdrsk\u00e9 t\u0159\u00eddy (\u0159ada 94\/95) m\u00edsto \u010depov\u00e9ho \u0159et\u011bzu?<\/summary>\n
Pro st\u0159edn\u011b n\u00e1ro\u010dnou dopravu kameniva s jemn\u00fdm materi\u00e1lem (maxim\u00e1ln\u00ed velikost hrudek pod 20 mm, n\u00edzk\u00fd index od\u011bru) je p\u0159ijatelnou alternativou k \u010depov\u00e9mu \u0159et\u011bzu v\u00e1le\u010dkov\u00fd \u0159et\u011bz t\u0159\u00eddy Engineer (\u0159ada 94 nebo 95). Uzav\u0159en\u00e1 konstrukce \u0159et\u011bzu t\u0159\u00eddy Engineer poskytuje lep\u0161\u00ed odolnost proti nas\u00e1t\u00ed jemn\u00fdch \u010d\u00e1stic ne\u017e standardn\u00ed v\u00e1le\u010dkov\u00fd \u0159et\u011bz d\u00edky v\u011bt\u0161\u00edmu pr\u016fm\u011bru v\u00e1lce a u\u017e\u0161\u00edm v\u00fdrobn\u00edm toleranc\u00edm. U drcen\u00e9ho kamene, \u0161t\u011brku nebo jin\u00fdch vysoce od\u011brn\u00fdch materi\u00e1l\u016f s velikost\u00ed hrudek nad 25\u201330 mm v\u0161ak otev\u0159en\u00e1 konstrukce \u010depov\u00e9ho \u0159et\u011bzu trvale p\u0159ekon\u00e1v\u00e1 v\u00e1le\u010dkov\u00fd \u0159et\u011bz t\u0159\u00eddy Engineer v \u017eivotnosti. Rozhoduj\u00edc\u00edm bodem je abrazivita materi\u00e1lu: pokud je materi\u00e1l vysoce abrazivn\u00ed (miner\u00e1ly na b\u00e1zi oxidu k\u0159emi\u010dit\u00e9ho, keramika, sklo), je \u010depov\u00fd \u0159et\u011bz spr\u00e1vnou volbou. Pokud m\u00e1 materi\u00e1l n\u00edzkou abrazivitu (obil\u00ed, uhl\u00ed, jemn\u00e9 \u010d\u00e1stice sl\u00ednku), je v\u00e1le\u010dkov\u00fd \u0159et\u011bz t\u0159\u00eddy Engineer adekv\u00e1tn\u00ed a levn\u011bj\u0161\u00ed.<\/div>\n<\/details>\n
\nJak se ma\u017ee \u010depov\u00fd \u0159et\u011bz v aplikac\u00edch sypk\u00fdch materi\u00e1l\u016f, kde by olej kontaminoval produkt?<\/summary>\n
Ve v\u011bt\u0161in\u011b aplikac\u00ed pro p\u0159epravu sypk\u00fdch materi\u00e1l\u016f s \u010depov\u00fdmi \u0159et\u011bzy se v m\u00edst\u011b spoje \u0159et\u011bzu nepou\u017e\u00edv\u00e1 konven\u010dn\u00ed olejov\u00e9 maz\u00e1n\u00ed \u2013 dopravovan\u00fd materi\u00e1l by okam\u017eit\u011b absorboval nebo kontaminoval jak\u00fdkoli olej aplikovan\u00fd na \u0159et\u011bz. Konstruk\u010dn\u00ed odpov\u011b\u010f na toto omezen\u00ed spo\u010d\u00edv\u00e1 v maximalizaci po\u010d\u00e1te\u010dn\u00edho maz\u00e1n\u00ed a kvality materi\u00e1lu v m\u00edst\u011b kontaktu \u010depu a bo\u010dn\u00ed ty\u010de: vysoce kvalitn\u00ed lit\u00e9 ocelov\u00e9 \u010depy jsou specifikov\u00e1ny s tvrdost\u00ed povrchu HRC 55\u201360 a otvory v bo\u010dn\u00ed ty\u010di jsou obrobeny s p\u0159esnou toleranc\u00ed a kalen\u00e9, aby se zajistila co nejdel\u0161\u00ed \u017eivotnost p\u0159i provozu nasucho. V n\u011bkter\u00fdch aplikac\u00edch zpracov\u00e1n\u00ed cementu a nerost\u016f se na \u0159et\u011bz v \u010deln\u00ed \u010d\u00e1sti b\u011bhem provozu aplikuj\u00ed such\u00e1 pr\u00e1\u0161kov\u00e1 maziva z PTFE nebo disulfidu molybdeni\u010dit\u00e9ho \u2013 pr\u00e1\u0161kov\u00e9 mazivo je kompatibiln\u00ed s produktem a vytv\u00e1\u0159\u00ed mezn\u00ed mazac\u00ed vrstvu, kter\u00e1 prodlu\u017euje \u017eivotnost \u010depu o 30\u2013501 TP3T ve srovn\u00e1n\u00ed s pln\u011b such\u00fdm chodem.<\/div>\n<\/details>\n
\nCo zp\u016fsobuje nerovnom\u011brn\u00e9 prodlou\u017een\u00ed po \u0161\u00ed\u0159ce vle\u010dn\u00e9ho dopravn\u00edku \u2013 jeden pramen se prodlu\u017euje rychleji ne\u017e druh\u00fd?<\/summary>\n
Rozd\u00edln\u00e9 prodlou\u017een\u00ed mezi rovnob\u011b\u017en\u00fdmi prameny \u0159et\u011bzu v dvoupramenn\u00e9m vle\u010dn\u00e9m dopravn\u00edku je d\u016fsledkem nerovnom\u011brn\u00e9ho zat\u00ed\u017een\u00ed. T\u0159i nej\u010dast\u011bj\u0161\u00ed p\u0159\u00ed\u010diny jsou: (1) mimost\u0159edov\u00e9 zat\u00ed\u017een\u00ed materi\u00e1lu \u2013 materi\u00e1l pad\u00e1 p\u0159ednostn\u011b na jednu stranu \u017elabu a v\u00edce zat\u011b\u017euje jeden pramen; (2) nesouosost hnac\u00edho ozuben\u00e9ho kola \u2013 pokud dv\u011b hnac\u00ed ozuben\u00e1 kola nejsou ve stejn\u00e9 rovin\u011b, jeden pramen ho ov\u00edj\u00ed s m\u00edrn\u011b v\u011bt\u0161\u00edm nap\u011bt\u00edm; (3) prohnut\u00ed vratn\u00e9ho \u017elabu \u2013 pokud m\u00e1 spodn\u00ed (vratn\u00fd) \u017elab bo\u010dn\u00ed sklon, gravitace t\u00e1hne \u0159et\u011bz sm\u011brem ke spodn\u00ed stran\u011b, \u010d\u00edm\u017e se zvy\u0161uje t\u0159ec\u00ed zat\u00ed\u017een\u00ed na tomto pramenu. Prodlou\u017een\u00ed obou pramen\u016f m\u011b\u0159te samostatn\u011b v \u010dtvrtletn\u00edch kontroln\u00edch intervalech. Pokud se jeden pramen trvale prodlu\u017euje rychleji, prozkoumejte a odstra\u0148te p\u0159\u00ed\u010dinu, ne\u017e bude nutn\u00e9 jej v r\u016fzn\u00fdch intervalech vym\u011bnit. V\u00fdm\u011bna jednoho pramene, zat\u00edmco druh\u00fd z\u016fstane v provozu, znovu vytv\u00e1\u0159\u00ed probl\u00e9m s rozd\u00edln\u00fdm zat\u00ed\u017een\u00edm.<\/div>\n<\/details>\n

<\/p>\n

\n

K dispozici je \u010depov\u00fd \u0159et\u011bz, ta\u017een\u00fd \u0159et\u011bz \u017eenijn\u00ed t\u0159\u00eddy a t\u011b\u017ek\u00fd dopravn\u00edkov\u00fd \u0159et\u011bz<\/h2>\n

Za\u0161lete n\u00e1m d\u00e9lku dopravn\u00edku, \u0161\u00ed\u0159ku \u017elabu, typ materi\u00e1lu, velikost kus\u016f a rychlost \u0159et\u011bzu \u2013 na\u0161i technici p\u0159ed v\u00fdrobou potvrd\u00ed spr\u00e1vnou s\u00e9rii, materi\u00e1l a konfiguraci uchycen\u00ed p\u00e1su.<\/p>\n

Proch\u00e1zet t\u011b\u017ek\u00e9 dopravn\u00edkov\u00e9 \u0159et\u011bzy<\/a>
\n\u017d\u00e1dost o kontrolu specifikace \u010depov\u00e9ho \u0159et\u011bzu<\/a><\/div>\n<\/div>\n<\/div>\n

St\u0159iha\u010d: Cxm<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Manipulace se sypk\u00fdm materi\u00e1lem Cement \u00b7 Kamenivo \u00b7 Obil\u00ed \u00b7 T\u011b\u017eba \u010cepov\u00fd \u0159et\u011bz a vle\u010dn\u00fd \u0159et\u011bz: Specifikace a pou\u017eit\u00ed pro dopravu t\u011b\u017ek\u00fdch sypk\u00fdch materi\u00e1l\u016f Standardn\u00ed v\u00e1le\u010dkov\u00fd \u0159et\u011bz nen\u00ed navr\u017een pro podm\u00ednky, kter\u00e9 dominuj\u00ed doprav\u011b sypk\u00fdch materi\u00e1l\u016f \u2013 p\u0159\u00edm\u00fd kontakt s abrazivn\u00edm materi\u00e1lem, zat\u00ed\u017een\u00ed \u017elabem, vysok\u00e9 r\u00e1zy z velk\u00fdch kus\u016f a t\u00e9m\u011b\u0159 nep\u0159etr\u017eit\u00fd provoz [\u2026]<\/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":[6634],"tags":[78,69],"class_list":["post-3314","post","type-post","status-publish","format-standard","hentry","category-chain-sprocket","tag-chain-sprocket","tag-sprocket-china"],"_links":{"self":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts\/3314","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/comments?post=3314"}],"version-history":[{"count":1,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts\/3314\/revisions"}],"predecessor-version":[{"id":3315,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts\/3314\/revisions\/3315"}],"wp:attachment":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/media?parent=3314"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/categories?post=3314"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/tags?post=3314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}