{"id":1936,"date":"2026-04-09T06:03:53","date_gmt":"2026-04-09T06:03:53","guid":{"rendered":"https:\/\/wormwheelgear.top\/?p=1936"},"modified":"2026-04-09T06:03:53","modified_gmt":"2026-04-09T06:03:53","slug":"worm-gear-drives-for-construction-mining-and-heavy-earthmoving-equipment","status":"publish","type":"post","link":"https:\/\/wormwheelgear.top\/cs\/worm-gear-drives-for-construction-mining-and-heavy-earthmoving-equipment\/","title":{"rendered":"\u0160nekov\u00e9 p\u0159evodovky pro stavebn\u00ed, t\u011b\u017eebn\u00ed a t\u011b\u017ek\u00e9 zemn\u00ed stroje"},"content":{"rendered":"
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Pr\u016fvodce aplika\u010dn\u00edm in\u017een\u00fdrstv\u00edm \u00b7 Stavebnictv\u00ed a t\u011b\u017eba<\/p>\n

\u0160nekov\u00e9 p\u0159evodovky pro Stavebnictv\u00ed, T\u011b\u017eba<\/span> a t\u011b\u017ek\u00e9 zemn\u00ed stroje<\/h1>\n

T\u0159\u00edda provozu D3 a D4. R\u00e1zov\u00e9 zat\u00ed\u017een\u00ed p\u0159i 2,5\u20133,0n\u00e1sobku provozn\u00edho momentu. Provozn\u00ed teploty od -20 \u00b0C do +55 \u00b0C. Kryt\u00ed IP67 proti vrtn\u00e9mu kalu a prachu z lomu. Specifikace, kter\u00e1 odli\u0161uje p\u0159evodovku, kter\u00e1 vydr\u017e\u00ed jednu sez\u00f3nu, od p\u0159evodovky, kter\u00e1 vydr\u017e\u00ed d\u00e9le ne\u017e stroj.<\/p>\n

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D4<\/div>\n
Maxim\u00e1ln\u00ed t\u0159\u00edda zat\u00ed\u017een\u00ed<\/div>\n<\/div>\n
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3,0x<\/div>\n
Maxim\u00e1ln\u00ed impaktn\u00ed faktor<\/div>\n<\/div>\n
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IP67<\/div>\n
T\u011bsnic\u00ed stupe\u0148<\/div>\n<\/div>\n
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SCM415<\/div>\n
T\u0159\u00edda h\u0159\u00eddele<\/div>\n<\/div>\n<\/div>\n
\u2699 Korea Ever-Power Worm Gear Co., LtdAnsan-si, Gyeonggi-do, Koreasales@wormwheelgear.top<\/div>\n<\/div>\n<\/section>\n
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Selh\u00e1n\u00ed zved\u00e1ku, kter\u00e9 nebylo vinou podvozku \u2013 a pro\u010d to situaci zhor\u0161uje<\/h2>\n

V roce 2022 do\u0161lo u korejsk\u00e9 stavebn\u00ed firmy k selh\u00e1n\u00ed zubu \u0161nekov\u00e9ho p\u0159evodu v\u00fdtahu materi\u00e1lu po osmi m\u011bs\u00edc\u00edch provozu na projektu v\u00fd\u0161kov\u00e9 budovy v In\u010dchonu. Vy\u0161et\u0159ov\u00e1n\u00ed rychle zjistilo bezprost\u0159edn\u00ed mechanickou p\u0159\u00ed\u010dinu: materi\u00e1l h\u0159\u00eddele \u0161neku byl induk\u010dn\u011b kalen\u00fd C45, nikoli 40Cr prokalen\u00fd 40Cr specifikovan\u00fd v zad\u00e1vac\u00ed dokumentaci. Dodavatel bez upozorn\u011bn\u00ed nahradil materi\u00e1ly. H\u0159\u00eddel C45 s tvrdost\u00ed 48 HRC oproti 40Cr s tvrdost\u00ed 54 HRC vykazovala nedostate\u010dn\u00fd rozd\u00edl tvrdosti oproti kolu z c\u00ednov\u00e9ho bronzu p\u0159i r\u00e1zov\u00e9m zat\u00ed\u017een\u00ed 15\u201320 start\u016f denn\u011b p\u0159i pln\u00e9m zat\u00ed\u017een\u00ed.<\/p>\n

D\u016fle\u017eit\u011bj\u0161\u00edm zji\u0161t\u011bn\u00edm v\u0161ak byla samotn\u00e1 specifikace. V zad\u00e1vac\u00ed dokumentaci byla specifikov\u00e1na t\u0159\u00edda D2 pro st\u0159edn\u00ed zat\u00ed\u017een\u00ed. Skute\u010dn\u00fd profil zat\u00ed\u017een\u00ed \u2013 rozjezdy s pln\u00fdm zat\u00ed\u017een\u00edm n\u011bkolikr\u00e1t za sm\u011bnu, r\u00e1zov\u00e1 zat\u00ed\u017een\u00ed p\u0159i k\u00fdv\u00e1n\u00ed betonov\u00fdch lopat do kladkostroje, ob\u010dasn\u00e9 p\u0159et\u00ed\u017een\u00ed v d\u016fsledku zaseknut\u00fdch z\u00e1padek lopat \u2013 byl minim\u00e1ln\u011b t\u0159\u00edda D3 pro t\u011b\u017ek\u00fd provoz, s n\u00e1razov\u00fdmi faktory dosahuj\u00edc\u00edmi 2,5n\u00e1sobku p\u0159i n\u00e1razech lopaty. P\u0159evodovka byla specifikov\u00e1na a zakoupena jako D2. Fungovala tak\u00e9 jako D3. Nahrazen\u00ed materi\u00e1lu poruchu urychlilo, ale spr\u00e1vn\u00e1 specifikace D2 u tohoto kladkostroje by tak\u00e9 selhala \u2013 jen pomaleji.<\/p>\n

\"aplikace<\/p>\n

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V\u00fdzva specifikace stavebnictv\u00ed a t\u011b\u017eby:<\/strong> Profily zat\u00ed\u017een\u00ed v t\u011b\u017ek\u00e9m pr\u016fmyslu jsou z\u0159\u00eddka stabiln\u00ed. Pohon m\u00edcha\u010dky betonu je p\u0159i jmenovit\u00e9m momentu 40% po dobu 20 minut plynul\u00fd, pot\u00e9 p\u0159i jmenovit\u00e9m momentu 2,8x naraz\u00ed na zaseknut\u00ed kameniva po dobu 0,3 sekundy. D\u016fln\u00ed dopravn\u00edk b\u011b\u017e\u00ed hodiny p\u0159i sou\u010diniteli zat\u00ed\u017een\u00ed 65%, pot\u00e9 dojde k n\u00e1hl\u00fdm n\u00e1r\u016fst\u016fm zat\u00ed\u017een\u00ed, kdy\u017e na p\u00e1s spadne k\u00e1men. Zad\u00e1v\u00e1n\u00ed pr\u016fm\u011brn\u00e9ho zat\u00ed\u017een\u00ed je nespr\u00e1vn\u00fd p\u0159\u00edstup. Zad\u00e1v\u00e1n\u00ed \u0161pi\u010dkov\u00e9ho zat\u00ed\u017een\u00ed s vhodn\u00fdm provozn\u00edm sou\u010dinitelem je jedin\u00fd p\u0159\u00edstup, kter\u00fd vede k spolehliv\u00e9 \u017eivotnosti.<\/p>\n<\/div>\n

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P\u011bt faktor\u016f, kter\u00e9 odli\u0161uj\u00ed stavebn\u00ed da\u0148 od pr\u016fmyslov\u00e9 dan\u011b<\/h2>\n
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R\u00e1zov\u00e9 zat\u00ed\u017een\u00ed<\/h4>\n

Stavebn\u00ed a t\u011b\u017eebn\u00ed za\u0159\u00edzen\u00ed za\u017e\u00edvaj\u00ed n\u00e1hl\u00e9, vysokoamplitudov\u00e9 skoky to\u010div\u00e9ho momentu v d\u016fsledku zasek\u00e1v\u00e1n\u00ed materi\u00e1lu, n\u00e1hl\u00e9ho zastaven\u00ed pod zat\u00ed\u017een\u00edm a r\u00e1z\u016f p\u0159i vysyp\u00e1v\u00e1n\u00ed. B\u011b\u017en\u00e9 jsou faktory n\u00e1razu 2,0\u20133,0n\u00e1sobku provozn\u00edho momentu. Pr\u016fmyslov\u00e9 dopravn\u00edky obvykle dosahuj\u00ed 1,25\u20131,5n\u00e1sobku. Tento rozd\u00edl vy\u017eaduje z\u00e1sadn\u011b odli\u0161n\u00fd p\u0159\u00edstup k v\u00fdb\u011bru materi\u00e1lu: hlin\u00edkovo-\u017eelezn\u00fd bronz ZCuAl10Fe3 (pevnost v tahu 550 MPa) nam\u00edsto c\u00ednu ZCuSn10Pb1 (220 MPa) pro aplikace s kritick\u00fdmi n\u00e1razy.<\/p>\n<\/div>\n

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Extr\u00e9mn\u00ed teplotn\u00ed rozsah<\/h4>\n

Korejsk\u00e1 staveni\u0161t\u011b pracuj\u00ed celoro\u010dn\u011b: v zim\u011b v provincii Gangwon je teplota -15 \u00b0C, v \u010dervenci teplota sk\u0159\u00edn\u011b na stroji vystaven\u00e9m slunci +40 \u00b0C. Toto rozptylov\u00e1n\u00ed o 55 stup\u0148\u016f je pro standardn\u00ed viskozitu miner\u00e1ln\u00edho oleje p\u0159\u00edli\u0161 velk\u00e9, aby se udr\u017eela dostate\u010dn\u00e1 tlou\u0161\u0165ka filmu v cel\u00e9m rozsahu. Pro za\u0159\u00edzen\u00ed, kter\u00e1 pracuj\u00ed v chladn\u00fdch zimn\u00edch podm\u00ednk\u00e1ch, je povinn\u00fd syntetick\u00fd olej PAO s viskozitn\u00edm indexem nad 150.<\/p>\n<\/div>\n

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Abrazivn\u00ed kontaminace<\/h4>\n

Betonov\u00fd prach, uheln\u00fd prach, horninov\u00e9 \u010d\u00e1stice a vrtn\u00fd kal jsou na staveni\u0161t\u00edch a v t\u011b\u017eebn\u00edch prac\u00edch v\u0161udyp\u0159\u00edtomn\u00e9. Pronikaj\u00ed opot\u0159ebovan\u00fdmi t\u011bsn\u011bn\u00edmi h\u0159\u00eddel\u00ed, nedostate\u010dn\u00fdmi odvzdu\u0161\u0148ovac\u00edmi filtry a poruchami spoj\u016f sk\u0159\u00edn\u011b. Jedin\u00e1 50mikrometrov\u00e1 horninov\u00e1 \u010d\u00e1stice cirkuluj\u00edc\u00ed v z\u00e1b\u011bru \u0161nekov\u00e9ho kola zp\u016fsobuje abrazivn\u00ed opot\u0159eben\u00ed z\u00e1vitu i bok\u016f zub\u016f, kter\u00e9 je \u0159\u00e1dov\u011b rychlej\u0161\u00ed ne\u017e b\u011b\u017en\u00e9 tribologick\u00e9 opot\u0159eben\u00ed.<\/p>\n<\/div>\n

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Variabilita pracovn\u00edho cyklu<\/h4>\n

Pohony v pr\u016fmyslov\u00e9 v\u00fdrob\u011b obvykle b\u011b\u017e\u00ed s konzistentn\u00edm zat\u00ed\u017een\u00edm. Stavebn\u00ed za\u0159\u00edzen\u00ed je ze sv\u00e9 podstaty prom\u011bnliv\u00e9: je\u0159\u00e1bov\u00fd kladkostroj je n\u011bkolik minut v klidu, pot\u00e9 zvedne maxim\u00e1ln\u00ed n\u00e1klad a pot\u00e9 op\u011bt v klidu. Toto p\u0159eru\u0161ovan\u00e9 zat\u00ed\u017een\u00ed znamen\u00e1, \u017ee tepeln\u00e9 rovnov\u00e1hy je dosa\u017eeno jen z\u0159\u00eddka, ale ozuben\u00e9 kolo za\u017e\u00edv\u00e1 proporcion\u00e1ln\u011b v\u00edce cykl\u016f s vysok\u00fdm zat\u00ed\u017een\u00edm, ne\u017e nazna\u010duje pr\u016fm\u011brn\u00e1 hodnota zat\u00ed\u017een\u00ed.<\/p>\n<\/div>\n

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Po\u017eadavky na dokumentaci<\/h4>\n

Stavebn\u00ed v\u00fdtahy a zdvihac\u00ed za\u0159\u00edzen\u00ed v Koreji vy\u017eaduj\u00ed shodu se z\u00e1konem o bezpe\u010dnosti a ochran\u011b zdrav\u00ed p\u0159i pr\u00e1ci a souvisej\u00edc\u00edmi KCS (korejsk\u00fdmi stavebn\u00edmi normami). U jak\u00e9hokoli p\u0159evodov\u00e9ho pohonu ve zdvihac\u00edm za\u0159\u00edzen\u00ed s person\u00e1ln\u00ed z\u00f3nou pod n\u00edm nen\u00ed zdokumentovan\u00e9 ov\u011b\u0159en\u00ed samosvornosti a certifikace materi\u00e1lu voliteln\u00e9 \u2013 jsou z\u00e1kladem pro bezpe\u010dnostn\u00ed certifikaci stroje.<\/p>\n<\/div>\n<\/div>\n

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T\u0159\u00edda zat\u00ed\u017een\u00ed D3 a D4 \u2013 co specifikace skute\u010dn\u011b m\u011bn\u00ed<\/h2>\n

P\u0159echod z kategorie D2 pro st\u0159edn\u00ed zat\u00ed\u017een\u00ed na kategorii D3 pro t\u011b\u017ek\u00e1 zat\u00ed\u017een\u00ed nen\u00ed jen zv\u00fd\u0161en\u00edm provozn\u00edho faktoru. M\u011bn\u00ed se po\u017eadovan\u00fd materi\u00e1l h\u0159\u00eddele, slitina kola, specifikace tepeln\u00e9ho zpracov\u00e1n\u00ed a po\u017eadavek na ov\u011b\u0159en\u00ed hloubky pouzdra. Ka\u017ed\u00e1 zm\u011bna \u0159e\u0161\u00ed specifick\u00fd re\u017eim selh\u00e1n\u00ed, proti kter\u00e9mu specifikace D2 nechr\u00e1n\u00ed.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parametr specifikace<\/th>\nD2 St\u0159edn\u00ed zat\u00ed\u017een\u00ed<\/th>\nD3 Vysoce odoln\u00fd<\/th>\nD4 N\u00e1ro\u010dn\u00e1 provozn\u00ed doba<\/th>\n<\/tr>\n<\/thead>\n
Faktor zat\u00ed\u017een\u00ed<\/td>\n40-70% jmenovit\u00e9ho<\/td>\n70-90% jmenovit\u00e9ho<\/td>\n90-100% kontinu\u00e1ln\u00ed<\/td>\n<\/tr>\n
Maxim\u00e1ln\u00ed impaktn\u00ed faktor<\/td>\n1.50<\/td>\n2.0<\/td>\n3.0<\/td>\n<\/tr>\n
Materi\u00e1l \u0161nekov\u00e9 h\u0159\u00eddele<\/td>\n40Cr kalen\u00e9<\/td>\nSCM415 cementovan\u00fd<\/td>\nSCM415 nebo 42CrMo cementovan\u00e9<\/td>\n<\/tr>\n
Tvrdost povrchu h\u0159\u00eddele<\/td>\n50-56 HRC<\/td>\n58-62 HRC<\/td>\n58-62 HRC + ov\u011b\u0159en\u00e1 hloubka pouzdra<\/td>\n<\/tr>\n
Hloubka pouzdra u ko\u0159enov\u00e9ho zaoblen\u00ed<\/td>\nN\/A \u2013 kalen\u00e9<\/td>\nMin. 0,8 mm (ov\u011b\u0159eno Vickersovou zkou\u0161kou)<\/td>\nMin. 1,0 mm (dokumentov\u00e1no v certifik\u00e1tu)<\/td>\n<\/tr>\n
Kola z lehk\u00fdch slitin<\/td>\nc\u00ednov\u00fd bronz ZCuSn10Pb1<\/td>\nZCuAl10Fe3 hlin\u00edkov\u00fd bronz<\/td>\nN\u00e1boj ZCuAl10Fe3 + GGG40 (velk\u00fd modul)<\/td>\n<\/tr>\n
Pevnost v tahu kola<\/td>\n~220 MPa<\/td>\n~550 MPa<\/td>\n~550 MPa + ov\u011b\u0159eno ohyb\u00e1n\u00ed n\u00e1boje<\/td>\n<\/tr>\n
Standardn\u00ed ulo\u017een\u00ed otvoru<\/td>\nNorma H7\/n6<\/td>\nH7\/p6 (ru\u0161en\u00ed)<\/td>\nH7\/p6 s \u00fapln\u00fdm v\u00fdpo\u010dtem interference<\/td>\n<\/tr>\n
Specifikace t\u011bsn\u011bn\u00ed<\/td>\nNBR b\u0159itov\u00e9 t\u011bsn\u011bn\u00ed, IP54+<\/td>\nFKM b\u0159itov\u00e9 t\u011bsn\u011bn\u00ed, minim\u00e1ln\u011b IP65<\/td>\nDvoulitrov\u00fd FKM, minim\u00e1ln\u011b IP67<\/td>\n<\/tr>\n
Teplotn\u00ed rozsah<\/td>\nPouzdro pro teploty od 0 do +80 stup\u0148\u016f Celsia<\/td>\nMiner\u00e1ln\u00ed nebo PAO na teplotu<\/td>\nPovinn\u00e9 syntetick\u00e9 PAO<\/td>\n<\/tr>\n
Samouzamykateln\u00e1 dokumentace<\/td>\nPouze standardn\u00ed sou\u0159adnicov\u00fd m\u011b\u0159ic\u00ed stroj (CMM)<\/td>\nSamosvorn\u00fd v\u00fdpo\u010det k dispozici<\/td>\nKompletn\u00ed bal\u00ed\u010dek bezpe\u010dnostn\u00ed dokumentace<\/td>\n<\/tr>\n
Dokumentace Korea Ever-Power<\/td>\nCertifik\u00e1t materi\u00e1lu + sou\u0159adnicov\u00fd m\u011b\u0159ic\u00ed stroj (SMM)<\/td>\nCertifik\u00e1t materi\u00e1lu + sou\u0159adnicov\u00fd m\u011b\u0159ic\u00ed stroj + z\u00e1znam o hloubce p\u0159\u00edpadu<\/td>\nKompletn\u00ed in\u017een\u00fdrsk\u00fd bal\u00ed\u010dek<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Stavebn\u00ed a t\u011b\u017eebn\u00ed aplikace \u2013 Specifick\u00e9 po\u017eadavky na p\u0159evodovky<\/h2>\n
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\ud83c\udfd7<\/div>\n

Pohon bubnu m\u00edcha\u010dky betonu<\/h4>\n

Neust\u00e1l\u00e1 rotace, abrazivn\u00ed prost\u0159ed\u00ed. Beton pronik\u00e1 do jak\u00e9hokoli nedostate\u010dn\u00e9ho t\u011bsn\u011bn\u00ed. Materi\u00e1l: D2-D3, h\u0159\u00eddel 40Cr, kolo ZCuSn10Pb1 nebo ZCuAl10Fe3. Minim\u00e1ln\u011b IP65. Provozn\u00ed faktor 1,75 pro ob\u010dasn\u00e9 zasek\u00e1v\u00e1n\u00ed kameniva.<\/p>\n<\/div>\n

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\ud83c\udfed<\/div>\n

Materi\u00e1ln\u00ed v\u00fdtah (osobn\u00ed z\u00f3na dole)<\/h4>\n

Samosvorn\u00e9 proveden\u00ed povinn\u00e9 s bezpe\u010dnostn\u00ed dokumentac\u00ed. Minim\u00e1ln\u011b D3. H\u0159\u00eddel SCM415, \u0161nekov\u00fd pohon s jedn\u00edm chodem. Samosvorn\u00e9 proveden\u00ed ov\u011b\u0159eno p\u0159i -10 \u00b0C (zimn\u00ed provozn\u00ed teplota) se specifikovan\u00fdm olejem. Korea Ever-Power poskytuje kompletn\u00ed bal\u00ed\u010dek dokumentace k samosvorn\u00e9mu proveden\u00ed pro shodu s KCS.<\/p>\n<\/div>\n

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\u26cf<\/div>\n

Rohov\u00fd pohon dopravn\u00edku pro t\u011b\u017eebn\u00ed rudu<\/h4>\n

Provozn\u00ed re\u017eim D3-D4, sou\u010dinitel zat\u00ed\u017een\u00ed 70-100%. Kolo ZCuAl10Fe3 je nezbytn\u00e9 pro n\u00e1razy zp\u016fsoben\u00e9 zat\u00ed\u017een\u00edm rudy. Kryt\u00ed IP67 pro t\u011b\u017ebu pod povrchem. Uheln\u00fd prach: filtrovan\u00fd odvzdu\u0161\u0148ova\u010d a p\u0159etlakov\u00e9 pouzdro nebo proveden\u00ed s trval\u00fdm ut\u011bsn\u011bn\u00edm.<\/p>\n<\/div>\n

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\ud83d\ude97<\/div>\n

Za\u0159\u00edzen\u00ed pro pokl\u00e1dku a zhut\u0148ov\u00e1n\u00ed silnic<\/h4>\n

Neust\u00e1l\u00e9 vibrace motoru, hutn\u00edc\u00edho val\u00edku a povrchu vozovky. Vibrace urychluj\u00ed t\u0159en\u00ed na spoj\u00edch sk\u0159\u00edn\u011b a rozhran\u00edch otvor\u016f. Pro otvor specifikujte p\u0159esahov\u00e9 ulo\u017een\u00ed H7\/p6. Zkontrolujte kompatibilitu tmelu spoj\u016f sk\u0159\u00edn\u011b s vibra\u010dn\u00edm prost\u0159ed\u00edm.<\/p>\n<\/div>\n

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\ud83c\udfe0<\/div>\n

Za\u0159\u00edzen\u00ed pro vrt\u00e1n\u00ed a ra\u017een\u00ed tunel\u016f<\/h4>\n

T\u011bsn\u011bn\u00ed pod hladinou podzemn\u00ed vody: minim\u00e1ln\u011b IP68. Teplotn\u00ed stabilita: vrtac\u00ed za\u0159\u00edzen\u00ed generuje teplo. Nezbytn\u00e9 pro PAO ISO VG 460. \u0160achta z nerezov\u00e9 oceli pro mokr\u00e9 tunelovac\u00ed prost\u0159ed\u00ed.<\/p>\n<\/div>\n

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\u26dd<\/div>\n

Ot\u00e1\u010den\u00ed a polohov\u00e1n\u00ed je\u0159\u00e1bu<\/h4>\n

P\u0159eru\u0161ovan\u00fd provoz, vysok\u00fd rozb\u011bhov\u00fd moment. Specifikace D3 pro \u0161nekov\u00e9 p\u0159evody s oto\u010dn\u00fdm v\u011bncem. Momentov\u00e9 zat\u00ed\u017een\u00ed od mimost\u0159edov\u00fdch zat\u00ed\u017een\u00ed je\u0159\u00e1bem vytv\u00e1\u0159\u00ed kombinovan\u00e9 radi\u00e1ln\u00ed a axi\u00e1ln\u00ed nap\u011bt\u00ed na \u0161nekov\u00e9m h\u0159\u00eddeli. Ov\u011b\u0159te v\u00fdb\u011br lo\u017eiska pro kombinovan\u00e9 zat\u00ed\u017een\u00ed.<\/p>\n<\/div>\n<\/div>\n

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V\u00fdroba ozuben\u00fdch kol D3 a D4 v Korea Ever-Power<\/h2>\n\n\n\n\n
\"\"<\/td>\n\"\"<\/td>\n\"\"<\/td>\n<\/tr>\n
\"\"<\/td>\n\"\"<\/td>\n\"\"<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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T\u011b\u017ek\u00e9 ter\u00e9nn\u00ed in\u017een\u00fdrstv\u00ed<\/p>\n

\u010cty\u0159i p\u0159\u00edpady \u0161nekov\u00fdch p\u0159evod\u016f ve stavebnictv\u00ed a t\u011b\u017eb\u011b \u2013 specifikace, poruchy a \u0159e\u0161en\u00ed<\/h2>\n<\/div>\n
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In\u010dchon, Korea \/ Staveni\u0161t\u011b<\/div>\n
Materi\u00e1lov\u00fd v\u00fdtah \u2014 Specifikace D2 pro aplikaci D3<\/div>\n

Situace:<\/strong> V\u00fd\u0161kov\u00fd stavebn\u00ed projekt v In\u010dchonu pou\u017e\u00edval \u0161nekov\u00fd materi\u00e1lov\u00fd kladkostroj specifikovan\u00fd podle normy D2 (st\u0159edn\u00ed zat\u00ed\u017een\u00ed). Skute\u010dn\u00fd profil zat\u00ed\u017een\u00ed zahrnoval 15\u201320 spu\u0161t\u011bn\u00ed na cyklus zat\u00ed\u017een\u00ed p\u0159i pln\u00e9m zat\u00ed\u017een\u00ed, ob\u010dasn\u00e9 n\u00e1razy od k\u00fdv\u00e1n\u00ed betonov\u00e9 lopaty a provoz p\u0159i teplot\u011b -8 \u00b0C v lednu. Bezprost\u0159edn\u00ed p\u0159\u00ed\u010dinou bylo selh\u00e1n\u00ed materi\u00e1lu h\u0159\u00eddele C45, ale specifikace D2 nebyla dostate\u010dn\u00e1 pro provozn\u00ed podm\u00ednky D3 bez ohledu na materi\u00e1l h\u0159\u00eddele.<\/p>\n

Rezoluce:<\/strong> Kompletn\u00ed vylep\u0161en\u00ed specifikace: cementovan\u00e1 h\u0159\u00eddel SCM415 (58-62 HRC, hloubka pouzdra 0,9 mm ov\u011b\u0159ena u ko\u0159ene z\u00e1\u0159ezu), kolo ZCuAl10Fe3 (pevnost v tahu 550 MPa oproti p\u016fvodn\u00edm 220 MPa), PAO ISO VG 460 (viskozita pro studen\u00fd start adekv\u00e1tn\u00ed p\u0159i -15 \u00b0C), t\u011bsn\u011bn\u00ed FKM IP65, regul\u00e1tor motoru s m\u011bkk\u00fdm rozb\u011bhem omezuj\u00edc\u00ed rozb\u011bhov\u00fd moment na 1,4n\u00e1sobek jmenovit\u00e9ho. Dod\u00e1v\u00e1 se kompletn\u00ed sada dokumentace o samosvornosti pro dokumentaci bezpe\u010dnosti na pracovi\u0161ti.<\/p>\n

\u2713 Nulov\u00e9 poruchy b\u011bhem 22 m\u011bs\u00edc\u016f n\u00e1sledn\u00e9ho provozu \/ Akceptov\u00e1na bezpe\u010dnostn\u00ed dokumentace KCS<\/div>\n<\/div>\n
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Gyeonggi, Korea \/ Beton\u00e1rna<\/div>\n
Pohon m\u00edchac\u00edho bubnu \u2013 abrazivn\u00ed penetrace betonu<\/div>\n

Situace:<\/strong> Beton\u00e1rna na transportbeton m\u011bnila \u0161nekov\u00e9 p\u0159evody pohon\u016f bubn\u016f m\u00edcha\u010dek ka\u017ed\u00fdch 9\u201311 m\u011bs\u00edc\u016f. Kontrola vadn\u00fdch pohon\u016f uk\u00e1zala siln\u00e9 abrazivn\u00ed opot\u0159eben\u00ed \u2013 boky z\u00e1vitu h\u0159\u00eddele i \u010deln\u00ed plochy zub\u016f kol byly ve sm\u011bru kluzu po\u0161kr\u00e1b\u00e1ny jemn\u00fdmi rovnob\u011b\u017en\u00fdmi \u0161kr\u00e1banci. Anal\u00fdza oleje potvrdila kontaminaci oxidem k\u0159emi\u010dit\u00fdm na 1 200 ppm. T\u011bsn\u011bn\u00ed h\u0159\u00eddele sk\u0159\u00edn\u011b byla standardn\u00ed NBR \u2013 nedostate\u010dn\u00e9 pro nep\u0159etr\u017eit\u00e9 vystaven\u00ed betonov\u00e9 ka\u0161i.<\/p>\n

Rezoluce:<\/strong> Dvoub\u0159it\u00e9 t\u011bsn\u011bn\u00ed h\u0159\u00eddele z FKM s st\u00edrac\u00edm krou\u017ekem na betonu na v\u00fdstupu z h\u0159\u00eddele. T\u011bleso znovu ut\u011bsn\u011bno silikonovou t\u011bsnic\u00ed hmotou (kompatibiln\u00ed s alkalitou betonu). Do pl\u00e1nu \u00fadr\u017eby p\u0159id\u00e1na \u010dtvrtletn\u00ed kontrola t\u011bsn\u011bn\u00ed. P\u0159id\u00e1na magnetick\u00e1 vypou\u0161t\u011bc\u00ed z\u00e1tka s m\u011bs\u00ed\u010dn\u00ed vizu\u00e1ln\u00ed kontrolou. Ozuben\u00e9 kolo pohonu m\u00edchadla jinak odpov\u00edd\u00e1 specifikaci D2 \u2013 p\u0159\u00ed\u010dinou poruchy byla kontaminace, nikoli nedostate\u010dn\u00e1 specifikace provozn\u00ed t\u0159\u00eddy.<\/p>\n

\u2713 V\u00fdm\u011bna t\u011bsn\u011bn\u00ed prodlou\u017eila \u017eivotnost pohonu z 10 m\u011bs\u00edc\u016f na v\u00edce ne\u017e 30 m\u011bs\u00edc\u016f<\/div>\n<\/div>\n
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Gangwon-do, Korea \/ Povrchov\u00e1 t\u011b\u017eba<\/div>\n
Dopravn\u00edk pro p\u0159esun rudy \u2013 kombinace extr\u00e9mn\u00edho chladu a prachu<\/div>\n

Situace:<\/strong> Rohov\u00e9 pohony dopravn\u00edku rudy v povrchov\u00e9m dole v Gangwonu se pot\u00fdkaly se dv\u011bma sez\u00f3nn\u00edmi probl\u00e9my: nadproudem motoru p\u0159i spu\u0161t\u011bn\u00ed v lednu (-18 \u00b0C) a zrychlen\u00fdm opot\u0159eben\u00edm v l\u00e9t\u011b v d\u016fsledku vnik\u00e1n\u00ed uheln\u00e9ho prachu nedostate\u010dn\u00fdmi odvzdu\u0161\u0148ovac\u00edmi otvory. Oba probl\u00e9my byly zp\u016fsobeny specifikac\u00ed maziva: miner\u00e1lem ISO VG 460 (p\u0159i -18 \u00b0C p\u0159\u00edli\u0161 visk\u00f3zn\u00edm pro studen\u00fd start) a neut\u011bsn\u011bn\u00fdmi pouzdry, kter\u00e9 nas\u00e1valy uheln\u00fd prach odvzdu\u0161\u0148ovac\u00edm otvorem.<\/p>\n

Rezoluce:<\/strong> Syntetick\u00fd PAO ISO VG 220 (bod tuhnut\u00ed -40 \u00b0C, viskozita odpov\u00eddaj\u00edc\u00ed -18 \u00b0C pro norm\u00e1ln\u00ed startov\u00e1n\u00ed motoru). Ut\u011bsn\u011bn\u00e1 sk\u0159\u00ed\u0148 s 10mikrometrov\u00fdmi filtry. H\u0159\u00eddelov\u00e1 t\u011bsn\u011bn\u00ed FKM nahrazuj\u00edc\u00ed origin\u00e1ln\u00ed NBR. Specifikace D3 (h\u0159\u00eddel SCM415 + kolo ZCuAl10Fe3) pro r\u00e1zov\u00e9 zat\u00ed\u017een\u00ed dopravn\u00edku n\u00e1razem rudy.<\/p>\n

\u2713 Eliminace nadproudu p\u0159i studen\u00e9m startu \/ Eliminace poruch kontaminace prachem \/ Bez nutnosti v\u00fdm\u011bny po dobu 28 m\u011bs\u00edc\u016f<\/div>\n<\/div>\n
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Soul, Korea \/ V\u00fdstavba m\u011bstsk\u00fdch tunel\u016f<\/div>\n
Ra\u017een\u00ed tunel\u016f \u2013 IP68 pod hladinou podzemn\u00ed vody<\/div>\n

Situace:<\/strong> V\u00fdstavba m\u011bstsk\u00fdch tunel\u016f pod \u0159ekou Han vy\u017eadovala \u0161nekov\u00e9 p\u0159evodov\u00e9 pohony pomocn\u00e9ho za\u0159\u00edzen\u00ed pro razen\u00ed tunel\u016f, kter\u00e9 pracovalo v pln\u011b nasycen\u00e9m p\u016fdn\u00edm prost\u0159ed\u00ed. Pohony se b\u011bhem n\u011bkolika t\u00fddn\u016f po instalaci pot\u00fdkaly s vniknut\u00edm vody \u2013 standardn\u00ed specifikace IP65 nebyla dostate\u010dn\u00e1 pro skute\u010dn\u00e9 provozn\u00ed podm\u00ednky: ob\u010dasn\u00e9 pono\u0159en\u00ed do \u0159\u00ed\u010dn\u00edho bahna a podzemn\u00ed vody.<\/p>\n

Rezoluce:<\/strong> Specifikace IP68: Dvoub\u0159it\u00e9 t\u011bsn\u011bn\u00ed h\u0159\u00eddele z FKM s p\u0159\u00eddavn\u00fdm labyrintov\u00fdm t\u011bsn\u011bn\u00edm, spoje pouzdra ut\u011bsn\u011bn\u00e9 dvouslo\u017ekovou epoxidovou t\u011bsnic\u00ed hmotou (neanaerobn\u00ed \u2013 anaerobn\u00ed slou\u010deniny ztr\u00e1cej\u00ed p\u0159i del\u0161\u00edm pono\u0159en\u00ed p\u0159ilnavost), PAO ISO VG 460 s bal\u00ed\u010dkem inhibitor\u016f koroze. H\u0159\u00eddel z nerezov\u00e9 oceli SS316 pro v\u0161echny pohony v satura\u010dn\u00ed z\u00f3n\u011b. \u010ctvrtletn\u00ed kontrola pouzdra a v\u00fdm\u011bna t\u011bsn\u011bn\u00ed jsou pl\u00e1nov\u00e1ny.<\/p>\n

\u2713 Dosa\u017een\u00ed shody s IP68 \/ Nulov\u00fd pr\u016fnik vody b\u011bhem 18m\u011bs\u00ed\u010dn\u00ed doby razen\u00ed tunelu<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n
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Korea Ever-Power<\/span><\/p>\n

Produkty pro t\u011b\u017ek\u00e9 \u0161nekov\u00e9 p\u0159evody D3 a D4<\/h2>\n<\/div>\n
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\"Sada<\/div>\n
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D3 Vysoce odoln\u00fd \/ SCM415 \/ ZCuAl10Fe3<\/div>\n
\u0160nekov\u00e9 p\u0159evodovky z legovan\u00e9 oceli pro vysok\u00e9 zat\u00ed\u017een\u00ed \u2013 specifikace D3<\/div>\n
Specifikace D3 pro t\u011b\u017ek\u00e9 provozy v stavebn\u00edch, t\u011b\u017eebn\u00edch a t\u011b\u017ek\u00fdch zemn\u00edch za\u0159\u00edzen\u00edch: cementovan\u00e1 a brou\u0161en\u00e1 \u0161nekov\u00e1 h\u0159\u00eddel SCM415 dosahuj\u00edc\u00ed povrchov\u00e9 tvrdosti 58-62 HRC s ov\u011b\u0159enou hloubkou pouzdra minim\u00e1ln\u011b 0,8 mm v m\u00edst\u011b ko\u0159ene zaoblen\u00ed. Ov\u011b\u0159en\u00ed hloubky pouzdra pomoc\u00ed traverzy tvrdosti dle Vickerse je zdokumentov\u00e1no v z\u00e1znamu o hloubce pouzdra dodan\u00e9ho d\u00edlu \u2013 nep\u0159eb\u00edr\u00e1 se z procesn\u00ed specifikace. Odpov\u00eddaj\u00edc\u00ed \u0161nekov\u00e9 kolo ZCuAl10Fe3 z hlin\u00edkov\u011b-\u017eelezn\u00e9ho bronzu poskytuje pevnost v tahu 550 MPa a tvrdost 140-180 HB, co\u017e mu d\u00e1v\u00e1 2,5n\u00e1sobnou odolnost proti r\u00e1zov\u00e9mu zat\u00ed\u017een\u00ed oproti standardn\u00edmu c\u00ednov\u00e9mu bronzu ZCuSn10Pb1. Specifikace ulo\u017een\u00ed s p\u0159esahem otvoru H7\/p6 je vypo\u010dtena pro specifikovan\u00fd pr\u016fm\u011br h\u0159\u00eddele a po\u017eadavek na p\u0159enos kroutic\u00edho momentu \u2013 poskytuje vy\u0161\u0161\u00ed kroutic\u00ed moment ne\u017e ulo\u017een\u00ed H7\/n6 pou\u017eit\u00e9 u sad D2. Dodac\u00ed dokumentace: certifik\u00e1t materi\u00e1lu podle tavn\u00e9ho \u010d\u00edsla fr\u00e9zky (ob\u011b komponenty), z\u00e1znam o tepeln\u00e9m zpracov\u00e1n\u00ed s \u010dasov\u00fdm teplotn\u00edm profilem, z\u00e1znam o hloubce pouzdra, protokol o rozm\u011brov\u00e9 kontrole sou\u0159adnicov\u00fdm m\u011b\u0159ic\u00edm strojem (CMM). K dispozici je voliteln\u00e1 specifikace t\u011bsn\u011bn\u00ed FKM pro kompatibilitu s pouzdry IP65 a IP67. V\u00fdpo\u010det samosvornosti je k dispozici pro v\u0161echny konfigurace \u0161nek\u016f s jedn\u00edm chodem objednan\u00e9 pro zdvihac\u00ed nebo jin\u00e9 aplikace \u2013 form\u00e1tov\u00e1n pro zahrnut\u00ed do bezpe\u010dnostn\u00ed dokumentace stroje.<\/div>\n

Zobrazit \/ Vy\u017e\u00e1dat si specifikaci D3-D4<\/a><\/p>\n<\/div>\n<\/div>\n

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\"\u0160nekov\u00e9<\/div>\n
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Al-\u017delezn\u00fd bronz \/ D3-D4 Impact<\/div>\n
\u0160nekov\u00e9 kolo z hlin\u00edkov\u00e9ho bronzu ZCuAl10Fe3 \u2013 odolnost proti n\u00e1razu<\/div>\n
Pokud profil zat\u00ed\u017een\u00ed aplikace zahrnuje r\u00e1zov\u00e9 ud\u00e1losti \u2013 kyvy betonov\u00e9 lopaty, n\u00e1razy rudn\u00e9ho bloku na dopravn\u00edkov\u00e9 p\u00e1sy, n\u00e1hl\u00e9 p\u016fsoben\u00ed zat\u00ed\u017een\u00ed je\u0159\u00e1bem \u2013 je slitina \u0161nekov\u00e9ho kola kritick\u00fdm parametrem specifikace. Hlin\u00edkovo-\u017eelezn\u00fd bronz ZCuAl10Fe3 dosahuje pevnosti v tahu 550 MPa oproti 220 MPa u c\u00ednov\u00e9 bronzy ZCuSn10Pb1: 2,5n\u00e1sobn\u00e9 zlep\u0161en\u00ed tahov\u00e9 pevnosti, kter\u00e9 se p\u0159\u00edmo prom\u00edt\u00e1 do odolnosti proti n\u00e1razu. Kolo z hlin\u00edkovo-\u017eelezn\u00e9ho bronzu neposkytuje v\u00fdhodu mezn\u00edho maz\u00e1n\u00ed jako olovnat\u00e1 f\u00e1ze v c\u00ednov\u00e9m bronzu \u2013 to je kompenzov\u00e1no specifikac\u00ed tvrd\u0161\u00ed cementovan\u00e9 h\u0159\u00eddele SCM415, kter\u00e1 d\u00edky vy\u0161\u0161\u00ed povrchov\u00e9 tvrdosti poskytuje v\u011bt\u0161\u00ed odolnost proti od\u011bru. Kolo z hlin\u00edkovo-\u017eelezn\u00e9ho bronzu je k dispozici ve stejn\u00e9m rozsahu otvor\u016f, modul\u016f a po\u010dtu zub\u016f jako standardn\u00ed kolo z c\u00ednov\u00e9 bronzu, co\u017e umo\u017e\u0148uje p\u0159\u00edmou n\u00e1hradu ve st\u00e1vaj\u00edc\u00edch pouzdrech p\u0159i modernizaci instalace D2 na specifikaci D3. Materi\u00e1lov\u00fd certifik\u00e1t potvrzuj\u00edc\u00ed procentu\u00e1ln\u00ed slo\u017een\u00ed Al, Fe a Cu je sou\u010d\u00e1st\u00ed ka\u017ed\u00e9 dod\u00e1vky.<\/div>\n

Zobrazit \/ Vy\u017e\u00e1dat si specifikaci D3-D4<\/a><\/p>\n<\/div>\n<\/div>\n

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\"Sada<\/div>\n
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D3-D4 \/ \u00dapln\u00e1 bezpe\u010dnostn\u00ed dokumentace<\/div>\n
Sada D3 pro vysok\u00e9 zat\u00ed\u017een\u00ed s bal\u00ed\u010dkem dokumentace o stavebn\u00ed bezpe\u010dnosti<\/div>\n
Pro \u0161nekov\u00e9 p\u0159evody instalovan\u00e9 ve stavebn\u00edch zdvihac\u00edch za\u0159\u00edzen\u00edch, d\u016fln\u00edch zdvihac\u00edch syst\u00e9mech a v jak\u00e9koli aplikaci, kde pohon podl\u00e9h\u00e1 kontrole bezpe\u010dnosti staveb nebo certifikaci CE stroje, poskytuje spole\u010dnost Korea Ever-Power roz\u0161\u00ed\u0159en\u00fd bal\u00ed\u010dek dokumentace speci\u00e1ln\u011b strukturovan\u00fd pro shodu s bezpe\u010dnost\u00ed. Bal\u00ed\u010dek obsahuje: certifik\u00e1ty materi\u00e1lu pro \u010d\u00edslo taven\u00ed fr\u00e9zky s \u00fadaji o slo\u017een\u00ed obou komponent; z\u00e1znam o procesu tepeln\u00e9ho zpracov\u00e1n\u00ed cementovan\u00e9 h\u0159\u00eddele (\u010das, teplota, kalen\u00ed, popou\u0161t\u011bn\u00ed); z\u00e1znam o ov\u011b\u0159en\u00ed hloubky pouzdra pomoc\u00ed Vickersova traverzu v m\u00edst\u011b ko\u0159enov\u00e9ho zaoblen\u00ed; zpr\u00e1vu o rozm\u011brov\u00e9 kontrole sou\u0159adnicov\u00fdm m\u011b\u0159ic\u00edm strojem (SMM); a v\u00fdpo\u010det ov\u011b\u0159en\u00ed samosvornosti p\u0159i specifikovan\u00e9m rozsahu provozn\u00edch teplot (minim\u00e1ln\u00ed zimn\u00ed teplota a maxim\u00e1ln\u00ed letn\u00ed teplota) se specifikovan\u00fdm mazivem. V\u00fdpo\u010det samosvornosti vyu\u017e\u00edv\u00e1 model koeficientu t\u0159en\u00ed ISO p\u0159i uveden\u00fdch teplotn\u011b-viskozitn\u00edch podm\u00ednk\u00e1ch a vypo\u010d\u00edt\u00e1v\u00e1 bezpe\u010dnostn\u00ed rezervu (\u03c1 prime m\u00ednus lambda) p\u0159i obou teplotn\u00edch extr\u00e9mech. Tento v\u00fdpo\u010det je form\u00e1tov\u00e1n pro p\u0159\u00edm\u00e9 p\u0159edlo\u017een\u00ed org\u00e1n\u016fm pro certifikaci bezpe\u010dnosti staveb.<\/div>\n

Zobrazit \/ Vy\u017e\u00e1dat si specifikaci D3-D4<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Nej\u010dast\u011bj\u0161\u00ed dotazy k t\u011b\u017ek\u00fdm n\u00e1klad\u016fm<\/span><\/p>\n

\u0160nekov\u00e9 p\u0159evody pro stavebnictv\u00ed a t\u011b\u017ebu \u2013 ot\u00e1zky od staveni\u0161\u0165 a spr\u00e1vc\u016f za\u0159\u00edzen\u00ed<\/h2>\n<\/div>\n
\nJak\u00e1 je minim\u00e1ln\u00ed specifikace \u0161nekov\u00e9ho p\u0159evodu pro materi\u00e1lov\u00fd kladkostroj s pracovn\u00ed z\u00f3nou pod n\u00edm?+<\/span><\/summary>\n
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Pro jak\u00e9koli pou\u017eit\u00ed kladkostroje s person\u00e1ln\u00ed z\u00f3nou pod n\u00ed \u2013 nebo jakoukoli z\u00f3nou, kam by se dostalo padaj\u00edc\u00ed b\u0159emeno \u2013 je minim\u00e1ln\u00ed specifikace D3 s \u00faplnou dokumentac\u00ed samosvoru. To znamen\u00e1: jednochod\u00fd \u0161nek (z1=1) s pom\u011brem minim\u00e1ln\u011b 20:1, nejl\u00e9pe 30:1 nebo vy\u0161\u0161\u00edm; cementovan\u00e1 h\u0159\u00eddel SCM415; v\u00fdpo\u010det samosvoru p\u0159i minim\u00e1ln\u00ed o\u010dek\u00e1van\u00e9 provozn\u00ed teplot\u011b se specifikovan\u00fdm mazivem; a dokumentaci bezpe\u010dnostn\u00ed rezervy samosvoru (\u00fahel t\u0159en\u00ed m\u00ednus \u00fahel stoup\u00e1n\u00ed, minim\u00e1ln\u011b 1,5 stupn\u011b). V Koreji vy\u017eaduj\u00ed materi\u00e1lov\u00e9 kladkostroje na staveni\u0161t\u00edch shodu s p\u0159edpisy z\u00e1kona o bezpe\u010dnosti a ochran\u011b zdrav\u00ed p\u0159i pr\u00e1ci (OSHA) podle Ministerstva pr\u00e1ce a zam\u011bstnanosti, kter\u00e9 zahrnuj\u00ed po\u017eadavky na dokumentaci o \u00fanosnosti mechanick\u00fdch sou\u010d\u00e1st\u00ed zdvihac\u00edch za\u0159\u00edzen\u00ed.<\/p>\n<\/div>\n<\/details>\n

\nMohu pou\u017e\u00edt kolo z c\u00ednov\u011b bronzov\u00e9ho materi\u00e1lu ZCuSn10Pb1 s h\u0159\u00eddel\u00ed SCM415 pro stavebn\u00ed aplikace, nebo mus\u00edm pou\u017e\u00edt ZCuAl10Fe3?+<\/span><\/summary>\n
\n

Spr\u00e1vn\u00e1 slitina kola z\u00e1vis\u00ed na specifick\u00e9m riziku poruchov\u00e9ho re\u017eimu ve va\u0161\u00ed aplikaci. Pro aplikace s vysok\u00fdm r\u00e1zov\u00fdm zat\u00ed\u017een\u00edm \u2013 pohony kladkostroj\u016f, ot\u00e1\u010den\u00ed je\u0159\u00e1b\u016f, n\u00e1razov\u00e9 dopravn\u00edky na rudu \u2013 se d\u016frazn\u011b doporu\u010duje ZCuAl10Fe3, proto\u017ee jeho pevnost v tahu 550 MPa odol\u00e1v\u00e1 r\u00e1zov\u00e9mu ohybov\u00e9mu nap\u011bt\u00ed v oblasti paty zubu, kter\u00e9 iniciuje lom v c\u00ednov\u00e9m bronzu. Pro aplikace se st\u0159edn\u00edm zat\u00ed\u017een\u00edm, ale s prim\u00e1rn\u00edm rizikem abrazivn\u00ed kontaminace \u2013 pohony m\u00edchadel, pohony ner\u00e1zov\u00fdch dopravn\u00edk\u016f \u2013 je c\u00ednov\u00fd bronz ZCuSn10Pb1 p\u0159ijateln\u00fd s h\u0159\u00eddel\u00ed SCM415 a jeho v\u00fdhoda maz\u00e1n\u00ed na hranici f\u00e1ze olovnat\u00e9ho spoje poskytuje lep\u0161\u00ed ochranu proti kr\u00e1tkodob\u00fdm such\u00fdm kontakt\u016fm b\u011bhem abrazivn\u00edho opot\u0159eben\u00ed ne\u017e hlin\u00edkovo-\u017eelezn\u00fd bronz. Pokud je prim\u00e1rn\u00edm rizikem r\u00e1zov\u00e9 zat\u00ed\u017een\u00ed, specifikujte ZCuSn10Pb1, pokud je prim\u00e1rn\u00edm rizikem abrazivn\u00ed opot\u0159eben\u00ed p\u0159i st\u0159edn\u00edm zat\u00ed\u017een\u00ed.<\/p>\n<\/div>\n<\/details>\n

\n\u0160nekov\u00e9 kolo pohonu m\u00edcha\u010dky betonu se m\u011bn\u00ed ka\u017ed\u00fdch 9 m\u011bs\u00edc\u016f. Co pravd\u011bpodobn\u011b zp\u016fsobuje p\u0159ed\u010dasn\u00e9 opot\u0159eben\u00ed?+<\/span><\/summary>\n
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Nejpravd\u011bpodobn\u011bj\u0161\u00edmi p\u0159\u00ed\u010dinami jsou betonov\u00fd prach a kal. Beton je alkalick\u00fd (pH 12-13 v \u010derstv\u00e9m stavu) a vysoce abrazivn\u00ed (k\u0159emi\u010dit\u00fd agreg\u00e1t, cementov\u00fd sl\u00ednek). Jak\u00e1koli cesta, kudy se beton dostane do p\u0159evodov\u00e9 sk\u0159\u00edn\u011b \u2013 nedostate\u010dn\u00e9 t\u011bsn\u011bn\u00ed h\u0159\u00eddele, otev\u0159en\u00fd odvzdu\u0161\u0148ovac\u00ed otvor, spoj sk\u0159\u00edn\u011b \u2013 kontaminuje mazivo b\u011bhem n\u011bkolika hodin. Oxid k\u0159emi\u010dit\u00fd v oleji v koncentraci 500+ ppm vytv\u00e1\u0159\u00ed trojvrstvou abrazivn\u00ed pastu, kter\u00e1 nep\u0159etr\u017eit\u011b opot\u0159ebov\u00e1v\u00e1 z\u00e1vit h\u0159\u00eddele i boky zub\u016f kola. N\u00e1prava: dvoub\u0159it\u00e9 t\u011bsn\u011bn\u00ed h\u0159\u00eddele z FKM s p\u0159\u00eddavn\u00fdm st\u00edrac\u00edm krou\u017ekem na beton nebo labyrintov\u00fdm t\u011bsn\u011bn\u00edm; v\u0161echny odvzdu\u0161\u0148ovac\u00ed otvory sk\u0159\u00edn\u011b ut\u011bsn\u011bn\u00e9 filtrovan\u00fdmi odvzdu\u0161\u0148ovac\u00edmi otvory ur\u010den\u00fdmi pro alkalick\u00e9 prost\u0159ed\u00ed; \u010dtvrtletn\u00ed v\u00fdm\u011bna oleje (krat\u0161\u00ed ne\u017e standardn\u00ed pr\u016fmyslov\u00e1 \u2013 kontaminace betonem rychle degraduje olej); m\u011bs\u00ed\u010dn\u00ed kontrola magnetick\u00e9 vypou\u0161t\u011bc\u00ed z\u00e1tky. P\u0159i spr\u00e1vn\u00e9m ut\u011bsn\u011bn\u00ed m\u016f\u017ee \u0161nekov\u00fd p\u0159evod specifikace D2 na m\u00edcha\u010dce betonu dos\u00e1hnout \u017eivotnosti 3\u20135 let.<\/p>\n<\/div>\n<\/details>\n

\nJak\u00fd olej bych m\u011bl specifikovat pro venkovn\u00ed t\u011b\u017eebn\u00ed lokalitu v provincii Gangwon, kter\u00e1 pracuje v zimn\u00edch teplot\u00e1ch a\u017e -18 \u00b0C?+<\/span><\/summary>\n
\n

Syntetick\u00fd olej PAO je povinn\u00fd pro venkovn\u00ed za\u0159\u00edzen\u00ed v zimn\u00edm provozn\u00edm prost\u0159ed\u00ed s teplotou pod bodem mrazu. Uve\u010fte PAO ISO VG 220 (bod tuhnut\u00ed minim\u00e1ln\u011b -40 \u00b0C, kinematick\u00e1 viskozita p\u0159i -18 \u00b0C p\u0159ibli\u017en\u011b 500\u2013600 cSt). To je za studena, ale zvl\u00e1dnuteln\u00e9 pro startov\u00e1n\u00ed motoru \u2013 miner\u00e1ln\u00ed olej ISO VG 460 p\u0159i -18 \u00b0C by byl 2 500+ cSt, co\u017e by zp\u016fsobilo siln\u00e9 nadproud motoru a potenci\u00e1ln\u011b by mohlo doj\u00edt k jeho zastaven\u00ed p\u0159i startov\u00e1n\u00ed. Ov\u011b\u0159te, zda je bod tuhnut\u00ed PAO uveden v datov\u00e9m listu maziva \u2013 n\u011bkter\u00e9 produkty PAO ozna\u010den\u00e9 jako vhodn\u00e9 pro chladn\u00e9 po\u010das\u00ed maj\u00ed body tuhnut\u00ed pouze do -30 \u00b0C, co\u017e je hrani\u010dn\u00ed hodnota pro provozn\u00ed podm\u00ednky -18 \u00b0C. Olej by m\u011bl m\u00edt tak\u00e9 antikorozn\u00ed vlastnosti (ASTM D665-B nebo DIN 51585) pro venkovn\u00ed za\u0159\u00edzen\u00ed vystaven\u00e1 de\u0161ti a t\u00e1n\u00ed sn\u011bhu.<\/p>\n<\/div>\n<\/details>\n

\nPot\u0159ebujeme \u0161nekov\u00e9 p\u0159evodov\u00e9 pohony pro podzemn\u00ed uheln\u00fd d\u016fl. Jak\u00e9 jsou specifick\u00e9 po\u017eadavky?+<\/span><\/summary>\n
\n

Podzemn\u00ed t\u011b\u017eba uhl\u00ed zav\u00e1d\u00ed dal\u0161\u00ed po\u017eadavky nad r\u00e1mec standardn\u00ed specifikace D3: v\u00fdb\u011br motoru v nev\u00fdbu\u0161n\u00e9m nebo jiskrov\u011b bezpe\u010dn\u00e9m proveden\u00ed (samotn\u00e9 p\u0159evodovka nep\u0159edstavuje nebezpe\u010d\u00ed, ale jiskry z motoru ano); vodiv\u00e9 pouzdro nebo antistatick\u00e1 \u00faprava pro za\u0159\u00edzen\u00ed ve vysok\u00fdch z\u00f3n\u00e1ch s obsahem metanu; ut\u011bsn\u011bn\u00ed uheln\u00e9ho prachu (uheln\u00fd prach je v\u00fdbu\u0161n\u00fd p\u0159i koncentrac\u00edch nad 35 g\/m3 a vysoce abrazivn\u00ed); a konstrukce pouzdra s p\u0159etlakem, pokud je za\u0159\u00edzen\u00ed v bl\u00edzkosti trval\u00e9ho vystaven\u00ed uheln\u00e9mu prachu. Pro samotn\u00e9 \u0161nekov\u00e9 p\u0159evodovce: specifikace D3 nebo D4, h\u0159\u00eddel SCM415, kolo ZCuAl10Fe3 pro odolnost proti n\u00e1razu, ut\u011bsn\u011bn\u00e9 pouzdro IP67 nebo IP68, mazivo PAO s antikorozn\u00edm obalem a t\u011bsn\u011bn\u00ed FKM. Spole\u010dnost Korea Ever-Power m\u016f\u017ee dodat \u0161nekov\u00e9 p\u0159evodovku a zdokumentovat specifikaci ve form\u00e1tu vhodn\u00e9m pro syst\u00e9m \u0159\u00edzen\u00ed bezpe\u010dnosti t\u011b\u017eebn\u00edho are\u00e1lu. V\u00fdb\u011br motoru v nev\u00fdbu\u0161n\u00e9m proveden\u00ed a konstrukce pouzdra pro spln\u011bn\u00ed po\u017eadavk\u016f z\u00f3ny s obsahem metanu nespadaj\u00ed do na\u0161\u00ed p\u016fsobnosti, ale lze je koordinovat s v\u00fdrobcem za\u0159\u00edzen\u00ed.<\/p>\n<\/div>\n<\/details>\n

\nJak\u00fd servisn\u00ed faktor bych m\u011bl pou\u017e\u00edt u pohonu t\u011b\u017eebn\u00edho dopravn\u00edku, kter\u00fd p\u0159epravuje rudu z prim\u00e1rn\u00edho drti\u010de?+<\/span><\/summary>\n
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Dopravn\u00edky prim\u00e1rn\u00edho drti\u010de maj\u00ed v t\u011b\u017eebn\u00edch aplikac\u00edch nejagresivn\u011bj\u0161\u00ed profily zat\u00ed\u017een\u00ed. Ruda vych\u00e1zej\u00edc\u00ed z drti\u010de m\u00e1 n\u00e1hodn\u00e9 rozlo\u017een\u00ed velikosti a hmotnosti \u2013 velk\u00e9 bloky nar\u00e1\u017eej\u00ed na p\u00e1s a vytv\u00e1\u0159ej\u00ed impulzn\u00ed zat\u00ed\u017een\u00ed. Doporu\u010den\u00fd provozn\u00ed faktor: SF = 2,5 pro nep\u0159etr\u017eit\u00fd provoz s \u010dast\u00fdmi siln\u00fdmi r\u00e1zy. V\u00fdsledkem je n\u00e1vrhov\u00fd to\u010div\u00fd moment = skute\u010dn\u00fd provozn\u00ed to\u010div\u00fd moment x 2,5. Vyberte modul z tohoto n\u00e1vrhov\u00e9ho to\u010div\u00e9ho momentu. D\u00e1le specifikujte materi\u00e1l D3 (h\u0159\u00eddel SCM415 + kolo ZCuAl10Fe3), aby zvl\u00e1dl jak sou\u010dinitel trval\u00e9ho zat\u00ed\u017een\u00ed, tak po\u017eadavek na odolnost proti n\u00e1razu. Pokud lze dopravn\u00edk zastavit i p\u0159i pln\u00e9m zat\u00ed\u017een\u00ed zaseknutou sekc\u00ed dopravn\u00edku nad n\u00edm (b\u011b\u017en\u00e9 u syst\u00e9m\u016f s gravita\u010dn\u00edm p\u0159\u00edvodem), zahr\u0148te do rozpo\u010dtu to\u010div\u00e9ho momentu i zastavovac\u00ed to\u010div\u00fd moment \u2013 \u200b\u200bm\u016f\u017ee 4\u20135kr\u00e1t p\u0159ekro\u010dit provozn\u00ed to\u010div\u00fd moment a jedn\u00e1 se o skute\u010dnou n\u00e1vrhovou zat\u011b\u017eovac\u00ed ud\u00e1lost.<\/p>\n<\/div>\n<\/details>\n

\nDod\u00e1v\u00e1 Korea Ever-Power dokumentaci pro korejskou certifikaci bezpe\u010dnosti staveb (KCS)?+<\/span><\/summary>\n
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Ano. Pro \u0161nekov\u00e9 p\u0159evody v korejsk\u00fdch stavebn\u00edch stroj\u00edch, kter\u00e9 podl\u00e9haj\u00ed po\u017eadavk\u016fm KCS (korejsk\u00e9 stavebn\u00ed normy) nebo po\u017eadavk\u016fm na inspekci bezpe\u010dnosti pr\u00e1ce Ministerstva pr\u00e1ce a bezpe\u010dnosti, poskytuje Korea Ever-Power dokumentaci strukturovanou pro po\u017eadovan\u00fd form\u00e1t pro pod\u00e1n\u00ed. Standardn\u00ed bal\u00ed\u010dek dokumentace o bezpe\u010dnosti staveb zahrnuje: certifik\u00e1t materi\u00e1lu (sledovatelnost \u010d\u00edsla taveb v\u00e1lcovac\u00edho v\u00e1lce, ob\u011b slo\u017eky); z\u00e1znam o tepeln\u00e9m zpracov\u00e1n\u00ed s procesn\u00ed dokumentac\u00ed; z\u00e1znam o ov\u011b\u0159en\u00ed hloubky pouzdra (pro cementovan\u00e9 h\u0159\u00eddele); zpr\u00e1vu o rozm\u011brov\u00e9 kontrole sou\u0159adnicov\u00fdm m\u011b\u0159ic\u00edm strojem (SMM); a v\u00fdpo\u010det bezpe\u010dnosti samosvornosti p\u0159i specifikovan\u00e9m rozsahu provozn\u00edch teplot. Form\u00e1t v\u00fdpo\u010dtu samosvornosti se \u0159\u00edd\u00ed metodikou korejsk\u00fdch pr\u016fmyslov\u00fdch norem (KS B 1408) a je form\u00e1tov\u00e1n pro p\u0159\u00edm\u00e9 p\u0159edlo\u017een\u00ed inspek\u010dn\u00edmu org\u00e1nu. Ve f\u00e1zi popt\u00e1vky potvr\u010fte konkr\u00e9tn\u00ed regula\u010dn\u00ed postup (KCS, KOSHA, sm\u011brnice CE pro strojn\u00ed za\u0159\u00edzen\u00ed nebo jin\u00e1) a Korea Ever-Power p\u0159ed p\u0159ijet\u00edm objedn\u00e1vky potvrd\u00ed form\u00e1t dokumentu.<\/p>\n<\/div>\n<\/details>\n

\nJak\u00e9 je maxim\u00e1ln\u00ed r\u00e1zov\u00e9 zat\u00ed\u017een\u00ed, kter\u00e9 m\u016f\u017ee \u0161nekov\u00fd p\u0159evod D4 sn\u00e9st?+<\/span><\/summary>\n
\n

Specifikace D4 pro n\u00e1ro\u010dn\u00e9 podm\u00ednky \u2013 cementovan\u00e1 h\u0159\u00eddel SCM415 (62 HRC), kolo ZCuAl10Fe3 (pevnost v tahu 550 MPa), ulo\u017een\u00ed s p\u0159esahem H7\/p6, modul M8 nebo v\u011bt\u0161\u00ed \u2013 dok\u00e1\u017ee sn\u00e1\u0161et \u0161pi\u010dkov\u00e9 r\u00e1zov\u00e9 momenty a\u017e 3,0x v\u011bt\u0161\u00ed ne\u017e trval\u00fd jmenovit\u00fd moment po kr\u00e1tkou dobu (m\u00e9n\u011b ne\u017e 0,5 sekundy) bez zlomen\u00ed zubu. Toto je z\u00e1klad pro sou\u010dinitel n\u00e1razu D4 3,0 uveden\u00fd ve specifikaci. Nad 3,0x: riziko zlomen\u00ed zubu se rychle zvy\u0161uje s ka\u017ed\u00fdm dal\u0161\u00edm faktorem p\u0159et\u00ed\u017een\u00ed v souladu s Woehlerovou k\u0159ivkou. Pokud va\u0161e aplikace produkuje r\u00e1zov\u00e9 ud\u00e1losti, kter\u00e9 mohou dos\u00e1hnout 4,0x nebo vy\u0161\u0161\u00edho provozn\u00edho momentu, spr\u00e1vn\u00fdm p\u0159\u00edstupem nen\u00ed specifikace v\u011bt\u0161\u00edho sou\u010dinitele n\u00e1razu \u2013 spr\u00e1vn\u00fdm p\u0159\u00edstupem je instalovat mezi hnac\u00ed h\u0159\u00eddel a soukol\u00ed omezuj\u00edc\u00ed spojku momentu, kter\u00e1 mechanicky omezuje p\u0159en\u00e1\u0161en\u00fd moment na jmenovitou kapacitu soukol\u00ed. Spole\u010dnost Korea Ever-Power m\u016f\u017ee poradit se specifikacemi omezova\u010de momentu pro pou\u017eit\u00ed s \u200b\u200bna\u0161imi soukol\u00edmi pro n\u00e1ro\u010dn\u00e9 podm\u00ednky.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
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Specifikujte sv\u016fj \u0161nekov\u00fd p\u0159evod pro vysok\u00e9 zat\u00ed\u017een\u00ed<\/h2>\n

Uve\u010fte typ aplikace, t\u0159\u00eddu zat\u00ed\u017een\u00ed (D3 nebo D4), rozsah okoln\u00ed teploty, po\u017eadavek IP, podm\u00ednky r\u00e1zov\u00e9ho zat\u00ed\u017een\u00ed a po\u017eadavky na dokumentaci (KCS, CE nebo norma). Korea Ever-Power vr\u00e1t\u00ed potvrzenou specifikaci D3\/D4 s dokumentac\u00ed hloubky pouzdra a v\u00fdpo\u010dtem samosvornosti do jednoho pracovn\u00edho dne.<\/p>\n

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Proch\u00e1zet produkty pro t\u011b\u017ek\u00e9 provozy<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n

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

  Application Engineering Guide \u00b7 Construction & Mining Worm Gear Drives for Construction, Mining and Heavy Earthmoving Equipment Duty class D3 and D4. Shock loads at 2.5-3.0x running torque. Operating from -20 degrees C to +55 degrees C. IP67 sealing against drilling mud and quarry dust. The specification that separates a gear set that lasts […]<\/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":[4774],"tags":[1394,1399],"class_list":["post-1936","post","type-post","status-publish","format-standard","hentry","category-worm-gear","tag-worm-gear","tag-worm-gear-worm"],"_links":{"self":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts\/1936","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/comments?post=1936"}],"version-history":[{"count":2,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts\/1936\/revisions"}],"predecessor-version":[{"id":1938,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts\/1936\/revisions\/1938"}],"wp:attachment":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/media?parent=1936"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/categories?post=1936"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/tags?post=1936"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}