{"id":1138,"date":"2026-06-25T05:29:40","date_gmt":"2026-06-25T05:29:40","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?p=1138"},"modified":"2026-06-25T05:30:25","modified_gmt":"2026-06-25T05:30:25","slug":"wheel-drive-planetary-gearbox-for-wheel-bulldozers","status":"publish","type":"post","link":"https:\/\/planetary-gearboxes.com\/cs\/wheel-drive-planetary-gearbox-for-wheel-bulldozers\/","title":{"rendered":"Planetov\u00e1 p\u0159evodovka s pohonem kol pro kolov\u00e9 buldozery"},"content":{"rendered":"
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\"Planetov\u00e1<\/p>\n

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Korea Ever-Power \u00b7 Aplika\u010dn\u00ed in\u017een\u00fdrstv\u00ed \u00b7 Kolov\u00e9 buldozery<\/p>\n

Planetov\u00e1 p\u0159evodovka s pohonem kol pro kolov\u00e9 buldozery<\/h1>\n

Kolov\u00fd dozer tla\u010d\u00ed 15 metr\u016f krychlov\u00fdch na jeden pr\u016fjezd p\u0159i tahu 300 kN \u2013 na uhl\u00ed skl\u00e1dkovan\u00e9m p\u0159i teplot\u011b 60 stup\u0148\u016f Celsia, na odpad ze skl\u00e1dek obsahuj\u00edc\u00ed ocel a sklo nebo na nadlo\u017e\u00ed dolu s abrazivn\u00edmi \u00falomky hornin. Pohon kol poskytuje nejvy\u0161\u0161\u00ed trvalou ta\u017enou s\u00edlu ze v\u0161ech kolov\u00fdch stroj\u016f, a to i v nejn\u00e1ro\u010dn\u011bj\u0161\u00edch podm\u00ednk\u00e1ch manipulace s materi\u00e1lem na Zemi.<\/p>\n

Proch\u00e1zet planetov\u00e9 p\u0159evodovky pohonu kol \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Pro\u010d existuj\u00ed kolov\u00e9 dozery \u2013 V\u00fdhoda rychlosti oproti p\u00e1sov\u00fdm dozer\u016fm<\/h2>\n

V\u011bt\u0161ina buldozer\u016f pou\u017e\u00edv\u00e1 p\u00e1sy. Kolov\u00e9 buldozery (buldozery na pneumatik\u00e1ch) v\u0161ak dominuj\u00ed t\u0159em specifick\u00fdm aplikac\u00edm: spr\u00e1va uheln\u00fdch hald, hutn\u011bn\u00ed skl\u00e1dek a rozs\u00e1hl\u00e9 zemn\u00ed pr\u00e1ce, kde je rychlost pojezdu mezi pracovn\u00edmi oblastmi d\u016fle\u017eit\u011bj\u0161\u00ed ne\u017e maxim\u00e1ln\u00ed shrnovac\u00ed s\u00edla. Kolov\u00fd buldozer se mezi pracovn\u00edmi polohami pohybuje rychlost\u00ed 15 a\u017e 35 km\/h \u2013 3 a\u017e 5kr\u00e1t rychleji ne\u017e p\u00e1sov\u00fd buldozer \u2013 co\u017e ho \u010din\u00ed mnohem produktivn\u011bj\u0161\u00edm na staveni\u0161t\u00edch, kde shrnovac\u00ed vzd\u00e1lenost p\u0159esahuje 100 a\u017e 200 metr\u016f.<\/p>\n

Ten\/Ta\/To planetov\u00e1 p\u0159evodovka pohonu kol<\/a> Kolov\u00fd buldozer mus\u00ed zvl\u00e1dat rozsah rychlost\u00ed, se kter\u00fdm se \u017e\u00e1dn\u00fd p\u00e1sov\u00fd stroj nesetk\u00e1v\u00e1: od rychlosti buldozeru 2 a\u017e 5 km\/h (maxim\u00e1ln\u00ed tah radlice, minim\u00e1ln\u00ed ot\u00e1\u010dky kol) do p\u0159epravn\u00ed rychlosti 35 km\/h (minim\u00e1ln\u00ed tah, maxim\u00e1ln\u00ed ot\u00e1\u010dky kol) \u2013 p\u0159evodov\u00fd pom\u011br 7:1 a\u017e 17:1 prost\u0159ednictv\u00edm jednoho hydrostatick\u00e9ho nebo \u0159azen\u00e9ho hnac\u00edho \u00fastroj\u00ed. Re\u017eim buldozeru vy\u017eaduje maxim\u00e1ln\u00ed to\u010div\u00fd moment p\u0159i minim\u00e1ln\u00ed rychlosti; re\u017eim p\u0159epravy vy\u017eaduje minim\u00e1ln\u00ed to\u010div\u00fd moment p\u0159i maxim\u00e1ln\u00ed rychlosti. P\u0159evodovka mus\u00ed mezi t\u011bmito extr\u00e9my p\u0159ech\u00e1zet plynule a rychle \u2013 proto\u017ee buldozer b\u011bhem pr\u00e1ce na hromad\u011b st\u0159\u00edd\u00e1 buldozer s p\u0159emis\u0165ov\u00e1n\u00edm ka\u017ed\u00fdch 30 a\u017e 90 sekund.<\/p>\n

\"Sou\u010d\u00e1st<\/p>\n

Pracovn\u00ed cyklus buldozeru je mezi kolov\u00fdmi stroji jedine\u010dn\u00fd. V typick\u00e9m 60sekundov\u00e9m cyklu str\u00e1v\u00ed buldozer 30 a\u017e 45 sekund tla\u010den\u00edm materi\u00e1lu rychlost\u00ed 2 a\u017e 5 km\/h (maxim\u00e1ln\u00ed to\u010div\u00fd moment, j\u00edzda vp\u0159ed), pot\u00e9 10 a\u017e 15 sekund couv\u00e1n\u00edm rychlost\u00ed 5 a\u017e 10 km\/h (st\u0159edn\u00ed to\u010div\u00fd moment, j\u00edzda vzad) a 5 a\u017e 10 sekund p\u0159emis\u0165ov\u00e1n\u00edm rychlost\u00ed 10 a\u017e 20 km\/h (n\u00edzk\u00fd to\u010div\u00fd moment, j\u00edzda vp\u0159ed). Toto rychl\u00e9 cyklov\u00e1n\u00ed vp\u0159ed-vzad-vp\u0159ed zp\u016fsob\u00ed 40 a\u017e 60 zm\u011bn sm\u011bru za hodinu \u2013 ka\u017ed\u00e1 z nich vyvol\u00e1 r\u00e1zov\u00fd efekt na zuby a lo\u017eiska p\u0159evodovky, kter\u00fd vytv\u00e1\u0159\u00ed r\u00e1zov\u00fd efekt pro obr\u00e1cen\u00ed to\u010div\u00e9ho momentu. B\u011bhem 4 000 hodin ro\u010dn\u00edho provozu dos\u00e1hne celkov\u00fd po\u010det zm\u011bn sm\u011bru 160 000 a\u017e 240 000 za rok \u2013 co\u017e je \u00fanavov\u00e9 zat\u00ed\u017een\u00ed, kter\u00e9 je 10 a\u017e 100kr\u00e1t vy\u0161\u0161\u00ed ne\u017e u jak\u00e9hokoli pohonu kol harvestor\u016f nebo stavebn\u00edch stroj\u016f a co do celkov\u00e9ho po\u010dtu cykl\u016f je druh\u00e9 nejv\u00fd\u0161e po cyklov\u00e1n\u00ed start-stop zavla\u017eovac\u00ed v\u011b\u017ee (WD-08).<\/p>\n

Zm\u011bna to\u010div\u00e9ho momentu p\u0159i ka\u017ed\u00e9 zm\u011bn\u011b sm\u011bru nen\u00ed postupn\u00e1 \u2013 obsluha p\u0159epne z pln\u00e9ho tahu vp\u0159ed na pln\u00fd tah vzad b\u011bhem 1 a\u017e 2 sekund pomoc\u00ed syst\u00e9mu \u0159azen\u00ed pod zat\u00ed\u017een\u00edm nebo hydrostatick\u00e9ho syst\u00e9mu. planetov\u00e1 p\u0159evodovka pohonu kol<\/a> mus\u00ed absorbovat toto obr\u00e1cen\u00ed ot\u00e1\u010den\u00ed bez n\u00e1razu mezi ozuben\u00fdm kolem a zubem. Pokud m\u00e1 z\u00e1b\u011br ozuben\u00e9ho kola v\u016fli 0,05 a\u017e 0,10 mm (b\u011b\u017en\u00e1 v\u00fdrobn\u00ed tolerance), ka\u017ed\u00e1 zm\u011bna sm\u011bru vyvol\u00e1 kr\u00e1tkodob\u00fd n\u00e1raz z nezat\u00ed\u017een\u00e9ho na zat\u00ed\u017een\u00fd stav na povrchu zubu \u2013 generuj\u00edc\u00ed \u0161pi\u010dku nap\u011bt\u00ed 1,5 a\u017e 2,5n\u00e1sobek ust\u00e1len\u00e9ho zat\u00ed\u017een\u00ed zubu. P\u0159i v\u00edce ne\u017e 200 000 obr\u00e1cen\u00edch ot\u00e1\u010dek ro\u010dn\u011b m\u016f\u017ee tato \u00fanava z n\u00e1razu vyvolat praskliny v ko\u0159eni zubu u standardn\u00edch pr\u016fmyslov\u00fdch p\u0159evod\u016f b\u011bhem 3 000 a\u017e 5 000 hodin. Ozuben\u00e1 kola ur\u010den\u00e1 pro provoz kolov\u00fdch buldozer\u016f mus\u00ed b\u00fdt navr\u017eena pro p\u0159\u00edpad \u00fanavy z obr\u00e1cen\u00ed ot\u00e1\u010den\u00ed \u2013 nejen pro p\u0159\u00edpad ust\u00e1len\u00e9ho kroutic\u00edho momentu p\u0159i buldozeru.<\/p>\n

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T\u0159\u00edda<\/th>\nHmotnost (t)<\/th>\nV\u00fdkon (HP)<\/th>\nV\u00fdpad \u010depele<\/th>\nTranzit<\/th>\n<\/tr>\n<\/thead>\n
St\u0159edn\u00ed (20\u201330 t)<\/td>\n20\u201330<\/td>\n200\u2013350<\/td>\n150\u2013250 kN<\/td>\n25\u201330 km\/h<\/td>\n<\/tr>\n
Velk\u00e1 (35\u201355 t)<\/td>\n35\u201355<\/td>\n350\u2013550<\/td>\n250\u2013400 kN<\/td>\n30\u201335 km\/h<\/td>\n<\/tr>\n
T\u011b\u017eba (55\u201375 t)<\/td>\n55\u201375<\/td>\n550\u2013850<\/td>\n350\u2013550 kN<\/td>\n25\u201335 km\/h<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Trak\u010dn\u00ed limit kolov\u00e9ho dozeru je ur\u010den hmotnost\u00ed stroje a koeficientem t\u0159en\u00ed pneumatiky o zem. Na such\u00e9m, zhutn\u011bn\u00e9m materi\u00e1lu (povrch haldy uhl\u00ed, krytina skl\u00e1dky) je koeficient 0,5 a\u017e 0,7 \u2013 co\u017e znamen\u00e1, \u017ee 50tunov\u00fd dozer m\u016f\u017ee vyvinout trakci 245 a\u017e 343 kN. Na mokr\u00e9m nebo sypk\u00e9m materi\u00e1lu se koeficient sni\u017euje na 0,3 a\u017e 0,5 \u2013 \u010d\u00edm\u017e se dostupn\u00e1 trakce sni\u017euje o 30 a\u017e 501 kN. Pohon kol nesm\u00ed dod\u00e1vat to\u010div\u00fd moment p\u0159esahuj\u00edc\u00ed trak\u010dn\u00ed limit, proto\u017ee prot\u00e1\u010dej\u00edc\u00ed se pneumatika na povrchu haldy uhl\u00ed nebo skl\u00e1dky ni\u010d\u00ed povrchovou vrstvu a vytv\u00e1\u0159\u00ed vyjet\u00e9 koleje, kter\u00e9 br\u00e1n\u00ed n\u00e1sledn\u00fdm p\u0159ejezd\u016fm.<\/p>\n

Uz\u00e1v\u011brka diferenci\u00e1lu (nebo samosvorn\u00fd diferenci\u00e1l) je u kolov\u00fdch buldozer\u016f nezbytn\u00e1. B\u011bhem \u0161ikm\u00e9ho buldozeru (tla\u010den\u00ed materi\u00e1lu pod \u00fahlem 20 a\u017e 45 stup\u0148\u016f ke sm\u011bru j\u00edzdy) tla\u010d\u00ed reak\u010dn\u00ed s\u00edla radlice stroj do strany \u2013 odleh\u010duje vnit\u0159n\u00ed kola a p\u0159et\u011b\u017euje vn\u011bj\u0161\u00ed kola. Bez uz\u00e1v\u011brky diferenci\u00e1lu se vnit\u0159n\u00ed kola (se sn\u00ed\u017een\u00fdm zat\u00ed\u017een\u00edm, a tedy i sn\u00ed\u017eenou trakc\u00ed) voln\u011b prot\u00e1\u010dej\u00ed \u2013 pl\u00fdtvaj\u00ed hnac\u00ed silou a umo\u017e\u0148uj\u00ed stroji klouzat do strany, m\u00edsto aby se tla\u010dil dop\u0159edu. S uzam\u010den\u00fdm diferenci\u00e1lem je to\u010div\u00fd moment rovnom\u011brn\u011b rozlo\u017een na v\u0161echna kola bez ohledu na rozlo\u017een\u00ed zat\u00ed\u017een\u00ed \u2013 a tah vp\u0159ed se tak udr\u017euje i p\u0159i \u0161ikm\u00e9m buldozeru. Pohon kol mus\u00ed zaji\u0161\u0165ovat plynul\u00e9 zap\u00edn\u00e1n\u00ed a vyp\u00edn\u00e1n\u00ed uz\u00e1v\u011brky diferenci\u00e1lu \u2013 n\u00e1hl\u00e9 zapnut\u00ed uz\u00e1v\u011brky pod zat\u00ed\u017een\u00edm zp\u016fsob\u00ed prudk\u00fd n\u00e1r\u016fst to\u010div\u00e9ho momentu na d\u0159\u00edve prokluzuj\u00edc\u00edm kole, kter\u00fd m\u016f\u017ee zlomit poloos nebo po\u0161kodit v\u00fdstupn\u00ed lo\u017eisko pohonu kola, pokud hnac\u00ed \u00fastroj\u00ed nen\u00ed navr\u017eeno pro n\u00e1raz.<\/p>\n<\/section>\n

\"Pohon<\/p>\n

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Aplika\u010dn\u00ed prost\u0159ed\u00ed \u2013 uhl\u00ed, skl\u00e1dky a nadlo\u017e\u00ed v dolech<\/h2>\n
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Spr\u00e1va hald uhl\u00ed je nejb\u011b\u017en\u011bj\u0161\u00ed aplikac\u00ed kolov\u00fdch buldozer\u016f. Buldozer tla\u010d\u00ed \u010derstv\u011b dodan\u00e9 uhl\u00ed do haldy, tvaruje haldu pro odvodn\u011bn\u00ed a odeb\u00edr\u00e1 uhl\u00ed z haldy pro nakl\u00e1dku na dopravn\u00edk. Teplota povrchu uhl\u00ed m\u016f\u017ee u velk\u00fdch hald dos\u00e1hnout 50 a\u017e 80 stup\u0148\u016f Celsia v d\u016fsledku samooh\u0159\u00edv\u00e1n\u00ed (oxidace) \u2013 a pneumatiky buldozeru a pohony kol pracuj\u00ed na tomto hork\u00e9m povrchu 8 a\u017e 16 hodin denn\u011b. Uheln\u00fd prach je jemn\u00fd (10 a\u017e 100 mikron\u016f), m\u00edrn\u011b abrazivn\u00ed (Mohs 1 a\u017e 2) a pronik\u00e1 do ka\u017ed\u00e9ho t\u011bsn\u011bn\u00ed a spoje sk\u0159\u00edn\u011b. Kombinace tepla a uheln\u00e9ho prachu urychluje opot\u0159eben\u00ed t\u011bsn\u011bn\u00ed 2 a\u017e 3kr\u00e1t rychleji ne\u017e p\u0159i standardn\u00edm provozu na staveni\u0161ti. Haldy uhl\u00ed nav\u00edc p\u0159edstavuj\u00ed riziko po\u017e\u00e1ru v d\u016fsledku samovzn\u00edcen\u00ed \u2013 a kolov\u00fd buldozer pracuj\u00edc\u00ed na ho\u0159\u00edc\u00ed nebo doutnaj\u00edc\u00ed \u010d\u00e1sti haldy m\u016f\u017ee vystavit pohon kol povrchov\u00fdm teplot\u00e1m p\u0159esahuj\u00edc\u00edm 100 stup\u0148\u016f Celsia, p\u0159i\u010dem\u017e lok\u00e1ln\u00ed hork\u00e1 m\u00edsta dosahuj\u00ed 200 stup\u0148\u016f Celsia nebo v\u00edce. Guma pneumatiky m\u011bkne a degraduje p\u0159i teplot\u00e1ch nad 80 \u00b0C \u2013 a t\u011bsn\u011bn\u00ed pohonu kol, a to i u model\u016f s certifikac\u00ed FKM, jsou nam\u00e1h\u00e1na veden\u00fdm teplem z pneumatiky p\u0159es r\u00e1fek do n\u00e1boje a v\u00fdstupn\u00edho lo\u017eiska. Tepeln\u00e9 sledov\u00e1n\u00ed teploty sk\u0159\u00edn\u011b pohonu kol je bezpe\u010dnostn\u00edm po\u017eadavkem u buldozer\u016f na hromad\u011bn\u00ed uhl\u00ed \u2013 proto\u017ee dlouhodob\u00e9 p\u0159eh\u0159\u00e1t\u00ed m\u016f\u017ee zp\u016fsobit selh\u00e1n\u00ed pneumatiky (prasknut\u00ed v d\u016fsledku n\u00e1r\u016fstu vnit\u0159n\u00edho tlaku) a tak\u00e9 po\u0161kozen\u00ed p\u0159evodovky.<\/p>\n

Hutn\u011bn\u00ed skl\u00e1dek je nejn\u00e1ro\u010dn\u011bj\u0161\u00ed aplikac\u00ed. Buldozer p\u0159ej\u00ed\u017ed\u00ed p\u0159es a skrz komun\u00e1ln\u00ed odpad obsahuj\u00edc\u00ed ocelov\u00e9 v\u00fdztu\u017ee, sklo, dr\u00e1ty, h\u0159eb\u00edky, zdravotnick\u00fd odpad, n\u00e1doby na chemik\u00e1lie a ve\u0161ker\u00fd dal\u0161\u00ed materi\u00e1l, kter\u00fd modern\u00ed spole\u010dnost likviduje. T\u011bsn\u011bn\u00ed pneumatik a pohon\u016f kol jsou neust\u00e1le napad\u00e1na ostr\u00fdmi p\u0159edm\u011bty, kter\u00e9 je propichuj\u00ed, \u0159e\u017eou a od\u00edraj\u00ed. Odpadn\u00ed materi\u00e1l je tak\u00e9 chemicky nep\u0159edv\u00eddateln\u00fd \u2013 v\u00fdluh (kapalina, kter\u00e1 odt\u00e9k\u00e1 z rozkl\u00e1daj\u00edc\u00edho se odpadu) m\u00e1 pH v rozmez\u00ed od 4 do 9 a obsahuje rozpu\u0161t\u011bn\u00e9 kovy, organick\u00e9 kyseliny a biologick\u00e9 kontaminanty, kter\u00e9 napadaj\u00ed standardn\u00ed t\u011bsn\u011bn\u00ed a materi\u00e1ly kryt\u016f.<\/p>\n

Manipulace s nadlo\u017e\u00edm v dolech vy\u017eaduje provoz buldozeru v nejabrazivn\u011bj\u0161\u00edch podm\u00ednk\u00e1ch. Nadlo\u017e\u00ed (hornina a zemina odstran\u011bn\u00e9 za \u00fa\u010delem odkryt\u00ed rudn\u00e9ho t\u011blesa) obsahuje ostr\u00e9, hranat\u00e9 \u00falomky hornin o velikosti 5 a\u017e 300 mm, kter\u00e9 buldozer tla\u010d\u00ed, p\u0159el\u00e9z\u00e1 p\u0159es n\u011b a proj\u00ed\u017ed\u00ed jimi. T\u011bsn\u011bn\u00ed pohonu kol jsou vystavena \u010d\u00e1stic\u00edm hornin tvrd\u0161\u00edm ne\u017e ocel h\u0159\u00eddele \u2013 co\u017e vede ke stejn\u00e9mu probl\u00e9mu s pro\u0159ez\u00e1v\u00e1n\u00edm t\u011bsn\u011bn\u00ed podle Mohsovy stupnice, jak\u00fd je pops\u00e1n u drti\u010d\u016f kamene (WD-07). D\u016fln\u00ed prost\u0159ed\u00ed zahrnuje tak\u00e9 prach, saze z nafty a (na n\u011bkter\u00fdch m\u00edstech) kyselou nebo alkalickou dren\u00e1\u017en\u00ed vodu, kter\u00e1 k fyzick\u00e9mu od\u011bru p\u0159id\u00e1v\u00e1 chemick\u00fd abrazivn\u00ed \u00fa\u010dinek.<\/p>\n

M\u00edra vyu\u017eit\u00ed kolov\u00fdch buldozer\u016f pat\u0159\u00ed k nejvy\u0161\u0161\u00edm ze v\u0161ech mobiln\u00edch za\u0159\u00edzen\u00ed: 3 000 a\u017e 5 000 hodin ro\u010dn\u011b p\u0159i skl\u00e1dkov\u00e1n\u00ed uhl\u00ed, 2 000 a\u017e 4 000 hodin p\u0159i skl\u00e1dkov\u00e1n\u00ed a 2 500 a\u017e 4 000 hodin v dolech. Tyto m\u00edry jsou srovnateln\u00e9 s skl\u00edze\u010di cukrov\u00e9 t\u0159tiny (WD-05) \u2013 a maj\u00ed stejn\u00fd d\u016fsledek: komponenty pohonu kol mus\u00ed b\u00fdt navr\u017eeny na celkovou \u017eivotnost 8 000 a\u017e 12 000 hodin, aby se interval v\u00fdm\u011bny sladil s ro\u010dn\u00edm intervalem odst\u00e1vky. P\u0159evodovka, kter\u00e1 vydr\u017e\u00ed 4 000 hodin u stroje pracuj\u00edc\u00edho 4 000 hodin ro\u010dn\u011b, vy\u017eaduje b\u011bhem provozn\u00ed sez\u00f3ny v\u00fdm\u011bnu \u2013 co\u017e je nepl\u00e1novan\u00e1 prostojov\u00e1 ud\u00e1lost, kter\u00e1 stoj\u00ed 5 000 a\u017e 15 000 USD ve ztracen\u00e9 produkci plus 3 000 a\u017e 10 000 USD za p\u0159evodovku a pr\u00e1ci. Celkov\u00e9 n\u00e1klady na poddimenzovanou p\u0159evodovku se proto pohybuj\u00ed v rozmez\u00ed 8 000 a\u017e 25 000 USD na jednu poruchu \u2013 co\u017e daleko p\u0159evy\u0161uje cenovou p\u0159ir\u00e1\u017eku za spr\u00e1vn\u011b dimenzovanou jednotku.<\/p>\n<\/div>\n

\"Pohon<\/div>\n<\/div>\n<\/section>\n
\"workshop<\/p>\n

T\u0159i re\u017eimy selh\u00e1n\u00ed specifick\u00e9 pro pohony kolov\u00fdch buldozer\u016f<\/h2>\n
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1<\/div>\n
Trval\u00e9 p\u0159eh\u0159\u00edv\u00e1n\u00ed z d\u016fvodu zastaven\u00ed motoru p\u0159i t\u011b\u017ek\u00e9m shrnov\u00e1n\u00ed materi\u00e1lu na zhutn\u011bn\u00e9m materi\u00e1lu<\/div>\n<\/div>\n

B\u011bhem t\u011b\u017ek\u00e9ho buldozeru naraz\u00ed radlice na zhutn\u011bn\u00fd materi\u00e1l nebo na nepohyblivou p\u0159ek\u00e1\u017eku. Obsluha udr\u017euje pln\u00fd plyn \u2013 a pohon kol dod\u00e1v\u00e1 maxim\u00e1ln\u00ed to\u010div\u00fd moment p\u0159i t\u00e9m\u011b\u0159 nulov\u00fdch ot\u00e1\u010dk\u00e1ch kol (zastaven\u00ed) po dobu 5 a\u017e 30 sekund. P\u0159i zastaven\u00ed generuje pohon kol maxim\u00e1ln\u00ed teplo s nulov\u00fdm pr\u016ftokem vzduchu pro chlazen\u00ed. U 50tunov\u00e9ho buldozeru s v\u00fdkonem pohonu 400 kW se p\u0159i 30sekundov\u00e9m zastaven\u00ed rozpt\u00fdl\u00ed p\u0159ibli\u017en\u011b 12 MJ tepla pohony kol \u2013 co\u017e zv\u00fd\u0161\u00ed teplotu oleje o 30 a\u017e 50 \u00b0C. P\u0159i pr\u00e1ci na skl\u00e1dce uhl\u00ed, kde je z\u00e1kladn\u00ed teplota oleje ji\u017e 80 a\u017e 95 \u00b0C (od povrchu hork\u00e9ho uhl\u00ed), m\u016f\u017ee zastaven\u00ed zv\u00fd\u0161it teplotu na 120 a\u017e 145 \u00b0C \u2013 co\u017e p\u0159ekro\u010d\u00ed tepeln\u00fd limit miner\u00e1ln\u00edho oleje a urychl\u00ed degradaci lo\u017eisek a p\u0159evod\u016f. V\u00edcen\u00e1sobn\u00e9 zastaven\u00ed za hodinu (b\u011b\u017en\u00e9 p\u0159i t\u011b\u017ek\u00e9m ryt\u00ed nebo zhut\u0148ov\u00e1n\u00ed) zp\u016fsobuje kumulativn\u00ed tepeln\u00e9 po\u0161kozen\u00ed, kter\u00e9 nelze zvr\u00e1tit \u017e\u00e1dnou v\u00fdm\u011bnou oleje. Znaky tepeln\u00e9ho po\u0161kozen\u00ed lze detekovat anal\u00fdzou oleje: zv\u00fd\u0161en\u00fd po\u010det \u010d\u00e1stic \u017eeleza a m\u011bdi nazna\u010duje, \u017ee povrchy lo\u017eisek a ozuben\u00fdch kol p\u0159ekro\u010dily sv\u016fj pr\u00e1h popou\u0161t\u011bn\u00ed a uvol\u0148uj\u00ed materi\u00e1l. Program anal\u00fdzy oleje s 250hodinov\u00fdmi intervaly odb\u011bru vzork\u016f dok\u00e1\u017ee detekovat n\u00e1stup tepeln\u00e9ho po\u0161kozen\u00ed 500 a\u017e 1 000 hodin p\u0159ed selh\u00e1n\u00edm p\u0159evodovky \u2013 co\u017e poskytuje \u010das na napl\u00e1nov\u00e1n\u00ed v\u00fdm\u011bny b\u011bhem pl\u00e1novan\u00e9 odst\u00e1vky, sp\u00ed\u0161e ne\u017e k nepl\u00e1novan\u00e9 poru\u0161e b\u011bhem \u0161pi\u010dky v\u00fdroby.<\/p>\n

Prevence: Syntetick\u00fd olej PAO. Monitorov\u00e1n\u00ed teploty oleje s automatick\u00fdm sn\u00ed\u017een\u00edm v\u00fdkonu p\u0159i 110 \u00b0C. Omezova\u010d to\u010div\u00e9ho momentu p\u0159i zastaven\u00ed (automatick\u00e9 sn\u00ed\u017een\u00ed po 15 sekund\u00e1ch). Okruh chladi\u010de oleje integrovan\u00fd s chladic\u00edm syst\u00e9mem stroje.<\/div>\n<\/div>\n
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2<\/div>\n
Po\u0161kozen\u00ed t\u011bsn\u011bn\u00ed a pouzdra v d\u016fsledku pronik\u00e1n\u00ed suti ze skl\u00e1dky<\/div>\n<\/div>\n

Komun\u00e1ln\u00ed odpad ze skl\u00e1dek obsahuje ocelov\u00e9 dr\u00e1ty, zbytky beton\u00e1\u0159sk\u00e9 oceli, \u00falomky skla a ostr\u00e9 plastov\u00e9 st\u0159epy, kter\u00e9 nar\u00e1\u017eej\u00ed do sk\u0159\u00edn\u011b pohonu kol a ov\u00edjej\u00ed se kolem v\u00fdstupn\u00ed h\u0159\u00eddele \u2013 podobn\u011b jako obal z cukrov\u00e9 t\u0159tiny u skl\u00edze\u010d\u016f cukru, ale z mnohem tvrd\u0161\u00edch a ost\u0159ej\u0161\u00edho materi\u00e1lu. Ocelov\u00fd dr\u00e1t omotan\u00fd kolem h\u0159\u00eddele dok\u00e1\u017ee pro\u0159\u00edznout standardn\u00ed b\u0159itov\u00e9 t\u011bsn\u011bn\u00ed b\u011bhem jedin\u00e9 8hodinov\u00e9 sm\u011bny. \u00dalomky skla zabudovan\u00e9 v odpadu funguj\u00ed jako \u0159ezn\u00e1 sm\u011bs, kdy\u017e se zachyt\u00ed mezi b\u0159item t\u011bsn\u011bn\u00ed a h\u0159\u00eddel\u00ed. Chemick\u00fd v\u00fdluh (pH 4 a\u017e 9, obsahuj\u00edc\u00ed rozpu\u0161t\u011bn\u00e9 kovy a organick\u00e9 kyseliny) napad\u00e1 jak materi\u00e1l t\u011bsn\u011bn\u00ed, tak povlak sk\u0159\u00edn\u011b. Kombinovan\u00e9 fyzik\u00e1ln\u00ed a chemick\u00e9 p\u016fsoben\u00ed \u010din\u00ed prost\u0159ed\u00ed skl\u00e1dky nejni\u010div\u011bj\u0161\u00edm pro t\u011bsn\u011bn\u00ed pohonu kol ze v\u0161ech aplikac\u00ed v cel\u00e9 t\u00e9to \u0159ad\u011b.<\/p>\n

Prevence: Dvouku\u017eelov\u00e1 t\u011bsn\u011bn\u00ed (povinn\u00e9 pro skl\u00e1dkov\u00e1n\u00ed). Ocelov\u00fd ochrann\u00fd kryt proti ne\u010distot\u00e1m s odst\u0159ikovac\u00edm krou\u017ekem h\u0159\u00eddele. Kalen\u00e9 pouzdro h\u0159\u00eddele (60+ HRC). Chemicky odoln\u00fd n\u00e1t\u011br pouzdra (epoxidov\u00fd nebo polyuretanov\u00fd). Denn\u00ed kontrola ovinut\u00ed vodi\u010d\u016f\/kabel\u016f.<\/div>\n<\/div>\n
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3<\/div>\n
R\u00e1zov\u00e9 zat\u00ed\u017een\u00ed pneumatiky zp\u016fsoben\u00e9 p\u0159ej\u00ed\u017ed\u011bn\u00edm p\u0159es zakopan\u00e9 tvrd\u00e9 p\u0159edm\u011bty p\u0159i j\u00edzdn\u00ed rychlosti<\/div>\n<\/div>\n

Kdy\u017e kolov\u00fd dozer p\u0159ej\u00ed\u017ed\u00ed p\u0159es zakopanou sk\u00e1lu, betonov\u00fd blok nebo ocelov\u00fd nosn\u00edk p\u0159i p\u0159epravn\u00ed rychlosti (15 a\u017e 30 km\/h), pneumatika p\u0159en\u00e1\u0161\u00ed vertik\u00e1ln\u00ed a pod\u00e9ln\u00fd r\u00e1z na v\u00fdstupn\u00ed lo\u017eisko pohonu kola a ozuben\u00e9 kolo. Velikost r\u00e1zu z\u00e1vis\u00ed na velikosti objektu, p\u0159epravn\u00ed rychlosti a tuhosti pneumatiky \u2013 a m\u016f\u017ee dos\u00e1hnout 3 a\u017e 8 g na mont\u00e1\u017en\u00ed p\u0159\u00edrub\u011b pohonu kola. P\u0159i rychlosti 30 km\/h m\u00e1 pohon kola 0,05 a\u017e 0,10 sekundy na absorbov\u00e1n\u00ed r\u00e1zu \u2013 p\u0159\u00edli\u0161 rychle na to, aby hydraulick\u00fd syst\u00e9m zareagoval, a p\u0159\u00edli\u0161 kr\u00e1tce na to, aby zareagoval oper\u00e1tor. Tyto n\u00e1razov\u00e9 ud\u00e1losti p\u0159i p\u0159epravn\u00ed rychlosti zp\u016fsobuj\u00ed Brinellingovo pnut\u00ed v lo\u017eisk\u00e1ch a \u0161pi\u010dky nap\u011bt\u00ed v ko\u0159eni ozuben\u00e9ho kola, kter\u00e9 se hromad\u00ed v \u00fanavov\u00e9m po\u0161kozen\u00ed 5 a\u017e 10kr\u00e1t rychleji ne\u017e p\u0159i ust\u00e1len\u00e9m provozu dozeru \u2013 co\u017e \u010din\u00ed j\u00edzdu p\u0159epravn\u00ed rychlost\u00ed na nerovn\u00e9m povrchu pro pohon kola \u0161kodliv\u011bj\u0161\u00edm ne\u017e samotn\u00fd provoz dozeru s vysok\u00fdm to\u010div\u00fdm momentem. Toto protiintuitivn\u00ed zji\u0161t\u011bn\u00ed (p\u0159eprava je \u0161kodliv\u011bj\u0161\u00ed ne\u017e dozing) potvrzuj\u00ed data z anal\u00fdzy selh\u00e1n\u00ed lo\u017eisek z hlavn\u00edch flotil doz\u00e9r\u016f: 55 a\u017e 651T selh\u00e1n\u00ed v\u00fdstupn\u00edch lo\u017eisek vykazuje sp\u00ed\u0161e zn\u00e1mky \u00fanavy zp\u016fsoben\u00e9 n\u00e1razem (Brinelling, podpovrchov\u00e9 prask\u00e1n\u00ed) ne\u017e zn\u00e1mky \u00fanavy zp\u016fsoben\u00e9 kontinu\u00e1ln\u00edm zat\u00ed\u017een\u00edm (odlupov\u00e1n\u00ed, mikro-d\u016flky), kter\u00e9 by nazna\u010dovaly selh\u00e1n\u00ed zp\u016fsoben\u00e9 dozingov\u00fdm momentem. D\u016fsledek je jasn\u00fd: udr\u017eov\u00e1n\u00ed hladk\u00fdch p\u0159epravn\u00edch cest a omezen\u00ed rychlosti p\u0159epravy na neupraven\u00e9m povrchu prodlu\u017euje \u017eivotnost lo\u017eisek pohonu kol o 40 a\u017e 601T \u2013 co\u017e je \u00fadr\u017eb\u00e1\u0159sk\u00fd postup, kter\u00fd nic nestoj\u00ed, ale p\u0159in\u00e1\u0161\u00ed v\u00fdznamn\u00e9 prodlou\u017een\u00ed \u017eivotnosti p\u0159evodovky.<\/p>\n

Prevence: Omezte rychlost p\u0159epravy na neupraven\u00e9m povrchu na maxim\u00e1ln\u011b 15 km\/h. Udr\u017eujte p\u0159epravn\u00ed komunikace tak, aby se odstranily zakopan\u00e9 p\u0159ek\u00e1\u017eky. Specifikujte v\u00fdstupn\u00ed lo\u017eiska s dynamickou r\u00e1zovou odolnost\u00ed (nejen statickou). Sm\u011bs pneumatiky tlum\u00edc\u00ed n\u00e1razy.<\/div>\n<\/div>\n<\/div>\n<\/section>\n
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\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
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Jak se li\u0161\u00ed pohon kolov\u00e9ho dozeru od pohonu kolov\u00e9ho naklada\u010de?<\/h3>\n

Kolov\u00fd dozer pracuje s trval\u00fdm maxim\u00e1ln\u00edm tahem po del\u0161\u00ed dobu (30 a\u017e 90 sekund na jeden pr\u016fjezd buldozerem oproti 5 a\u017e 15 sekund\u00e1m nakl\u00e1d\u00e1n\u00ed l\u017e\u00edce na naklada\u010d). Tento trval\u00fd provoz s momentem zastaven\u00ed produkuje 3 a\u017e 5kr\u00e1t v\u011bt\u0161\u00ed tepeln\u00e9 nam\u00e1h\u00e1n\u00ed za provozn\u00ed hodinu ne\u017e naklada\u010d. Buldozer tak\u00e9 pracuje na abrazivn\u011bj\u0161\u00edch a chemicky agresivn\u011bj\u0161\u00edch povr\u0161\u00edch (uhl\u00ed, skl\u00e1dky, nadlo\u017e\u00ed dolu) ne\u017e typick\u00fd naklada\u010d \u2013 vy\u017eaduje siln\u011bj\u0161\u00ed t\u011bsn\u011bn\u00ed a ochranu proti korozi. Pohon kola kolov\u00e9ho dozeru je v podstat\u011b pohon kola naklada\u010de se zv\u00fd\u0161enou tepelnou kapacitou, vylep\u0161en\u00fdm t\u011bsn\u011bn\u00edm a ochranou proti korozi specifickou pro danou aplikaci.<\/p>\n<\/div>\n

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Jak\u00e1 je typick\u00e1 \u017eivotnost?<\/h3>\n

Z\u00e1soby uhl\u00ed: 6 000 a\u017e 10 000 hodin. Nadlo\u017e\u00ed dolu: 4 000 a\u017e 8 000 hodin. Skl\u00e1dka: 3 000 a\u017e 6 000 hodin (nejkrat\u0161\u00ed kv\u016fli fyzik\u00e1ln\u00edm ne\u010distot\u00e1m a chemick\u00fdm v\u00fdluh\u016fm). V\u0161echny t\u0159i aplikace b\u011b\u017e\u00ed 2 000 a\u017e 4 000 hodin ro\u010dn\u011b \u2013 vy\u017eaduj\u00ed v\u00fdm\u011bnu pohonu kol nebo gener\u00e1ln\u00ed opravu ka\u017ed\u00e9 1 a\u017e 3 roky v z\u00e1vislosti na z\u00e1va\u017enosti aplikace. Interval v\u00fdm\u011bny t\u011bsn\u011bn\u00ed u skl\u00e1dkov\u00fdch stroj\u016f je u standardn\u00edch t\u011bsn\u011bn\u00ed pouh\u00fdch 500 a\u017e 1 000 hodin \u2013 co\u017e z dvojit\u00fdch ku\u017eelov\u00fdch t\u011bsn\u011bn\u00ed \u010din\u00ed sp\u00ed\u0161e ekonomickou nutnost ne\u017e pr\u00e9miovou variantu.<\/p>\n<\/div>\n

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Jak\u00fd je typick\u00fd p\u0159evodov\u00fd pom\u011br?<\/h3>\n

15:1 a\u017e 35:1 pro syst\u00e9my \u0159azen\u00ed pod zat\u00ed\u017een\u00edm nebo hydrostatick\u00e9 syst\u00e9my. Rychlost buldozeru (2 a\u017e 5 km\/h) a p\u0159epravn\u00ed rychlost (15 a\u017e 35 km\/h) vy\u017eaduj\u00ed m\u00edrn\u00fd p\u0159evod, kter\u00fd vyva\u017euje tah p\u0159i n\u00edzk\u00fdch rychlostech s mo\u017enost\u00ed p\u0159epravn\u00ed rychlosti. Mnoho velk\u00fdch kolov\u00fdch buldozer\u016f pou\u017e\u00edv\u00e1 p\u0159evodovky \u0159azen\u00e9 pod zat\u00ed\u017een\u00edm se 3 a\u017e 6 rychlostn\u00edmi stupni pro j\u00edzdu vp\u0159ed nam\u00edsto hydrostatick\u00e9ho pohonu \u2013 proto\u017ee \u0159azen\u00ed pod zat\u00ed\u017een\u00edm poskytuje vy\u0161\u0161\u00ed \u00fa\u010dinnost p\u0159i trvale vysok\u00e9m to\u010div\u00e9m momentu, kter\u00fd dominuje pracovn\u00edmu cyklu.<\/p>\n<\/div>\n

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Dod\u00e1v\u00e1 Korea Ever-Power pohony kol pro buldozery?<\/h3>\n

Ano. Spole\u010dnost Korea Ever-Power vyr\u00e1b\u00ed planetov\u00e9 p\u0159evodovky s pohonem kol pro kolov\u00e9 buldozery od 15 000 do 80 000 Nm s tepeln\u00fdmi parametry pro zaji\u0161t\u011bn\u00ed to\u010div\u00e9ho momentu p\u0159i zastaven\u00ed, s dvojit\u00fdm ku\u017eelov\u00fdm t\u011bsn\u011bn\u00edm pro skl\u00e1dkov\u00e1n\u00ed a doly, s kaln\u00fdmi pouzdry h\u0159\u00eddel\u00ed, chemicky odoln\u00fdmi povlaky sk\u0159\u00edn\u011b a v\u00fdstupn\u00edmi lo\u017eisky dimenzovan\u00fdmi na r\u00e1zov\u00e9 zat\u00ed\u017een\u00ed p\u0159i p\u0159epravn\u00ed rychlosti. Pro specifikaci odpov\u00eddaj\u00edc\u00ed tepeln\u00fdm, t\u011bsnic\u00edm a r\u00e1zov\u00fdm po\u017eadavk\u016fm uve\u010fte v\u00fdrobce buldozeru, model, provozn\u00ed hmotnost a prim\u00e1rn\u00ed pou\u017eit\u00ed (uhl\u00ed, skl\u00e1dkov\u00e1n\u00ed, d\u016fl nebo v\u0161eobecn\u00e9 zemn\u00ed pr\u00e1ce).<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Pohony kolov\u00fdch buldozer\u016f \u2013 s axi\u00e1ln\u00edm odporem, ut\u011bsn\u011bn\u00e9 proti ne\u010distot\u00e1m, tepeln\u011b \u0159\u00edzen\u00e9<\/div>\n

Spole\u010dnost Korea Ever-Power dod\u00e1v\u00e1 pohony kolov\u00fdch dozer\u016f od 15 000 do 80 000 Nm s trvalou tepelnou kapacitou p\u0159i zastaven\u00ed, t\u011bsn\u011bn\u00edm na \u00farovni skl\u00e1dkov\u00e1n\u00ed a odolnost\u00ed proti n\u00e1raz\u016fm p\u0159i p\u0159epravn\u00ed rychlosti.<\/p>\n<\/div>\n

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Zobrazit \u0159adu pohon\u016f kol \u2192<\/a><\/p>\n

sales@planet\u00e1rn\u00ed-p\u0159evodovky.com<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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

Korea Ever-Power \u00b7 Aplika\u010dn\u00ed in\u017een\u00fdrstv\u00ed \u00b7 Kolov\u00e9 buldozery Pohon kol Planetov\u00e1 p\u0159evodovka pro kolov\u00e9 buldozery Kolov\u00fd buldozer tla\u010d\u00ed 15 metr\u016f krychlov\u00fdch na jeden pr\u016fjezd p\u0159i tahu 300 kN \u2013 na uhl\u00ed na skl\u00e1dk\u00e1ch o teplot\u011b 60 stup\u0148\u016f Celsia, na odpad ze skl\u00e1dek obsahuj\u00edc\u00ed ocel a sklo nebo na nadlo\u017e\u00ed dolu s \u00falomky abrazivn\u00edch hornin. Pohon kol dod\u00e1v\u00e1 [\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":[965],"tags":[],"class_list":["post-1138","post","type-post","status-publish","format-standard","hentry","category-application-and-technical-guid"],"_links":{"self":[{"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/posts\/1138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/comments?post=1138"}],"version-history":[{"count":3,"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/posts\/1138\/revisions"}],"predecessor-version":[{"id":1142,"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/posts\/1138\/revisions\/1142"}],"wp:attachment":[{"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/media?parent=1138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/categories?post=1138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/tags?post=1138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}