{"id":1045,"date":"2026-06-23T05:52:49","date_gmt":"2026-06-23T05:52:49","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?p=1045"},"modified":"2026-06-23T05:52:49","modified_gmt":"2026-06-23T05:52:49","slug":"track-drive-planetary-gearbox-for-feller-bunchers","status":"publish","type":"post","link":"https:\/\/planetary-gearboxes.com\/cs\/track-drive-planetary-gearbox-for-feller-bunchers\/","title":{"rendered":"Planetov\u00e1 p\u0159evodovka s pohonem p\u00e1s\u016f pro k\u00e1cec\u00ed harvestory"},"content":{"rendered":"
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\"Planetov\u00e1<\/p>\n
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Aplika\u010dn\u00ed in\u017een\u00fdrstv\u00ed<\/span>
\nK\u00e1cec\u00ed stroje \u00b7 Lesnictv\u00ed<\/span><\/div>\n

Planetov\u00e1 p\u0159evodovka s pohonem p\u00e1s\u016f pro k\u00e1cec\u00ed harvestory \u2013 kde je samotn\u00e1 zem\u011b testem n\u00e1razu<\/h1>\n

\u017d\u00e1dn\u00fd jin\u00fd p\u00e1sov\u00fd stroj nepracuje v tak nehostinn\u00e9m ter\u00e9nu. 35tunov\u00fd k\u00e1cec\u00ed harvestor stoup\u00e1 po svahu o sklonu 40 stup\u0148\u016f, p\u0159ej\u00ed\u017ed\u00ed p\u0159es obna\u017een\u00e9 ko\u0159eny o pr\u016fm\u011bru lidsk\u00e9ho stehna, absorbuje n\u00e1razy do pa\u0159ezu, kter\u00e9 ot\u0159\u00e1saj\u00ed cel\u00fdm podvozkem, a tento \u00fakol opakuje 10 hodin v kuse \u2013 na m\u00edst\u011b, kde je nejbli\u017e\u0161\u00ed servisn\u00ed v\u016fz vzd\u00e1len\u00fd dv\u011b hodiny j\u00edzdy po lesn\u00ed cest\u011b.<\/p>\n

Proch\u00e1zet planetov\u00e9 p\u0159evodovky pro p\u00e1sov\u00e9 pohony \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Lesn\u00ed prost\u0159ed\u00ed \u2013 \u010dty\u0159i v\u00fdzvy, kter\u00fdm \u017e\u00e1dn\u00e1 jin\u00e1 aplikace p\u00e1sov\u00e9ho pohonu ne\u010del\u00ed sou\u010dasn\u011b<\/h2>\n

Stavebn\u00ed bagr pracuje na vy\u010di\u0161t\u011bn\u00e9m, urovnan\u00e9m ter\u00e9nu. D\u016fln\u00ed buldozer pracuje na upraven\u00fdch lavic\u00edch. K\u00e1cec\u00ed stroj pracuje na ter\u00e9nu tak, jak je \u2013 nevy\u010di\u0161t\u011bn\u00fd, neurovnan\u00fd, zanesen sutinami a \u010dasto naklon\u011bn\u00fd v \u00fahlech, kter\u00e9 by poru\u0161ovaly bezpe\u010dnostn\u00ed p\u0159edpisy na jak\u00e9mkoli staveni\u0161ti. planetov\u00e1 p\u0159evodovka s pohonem p\u00e1s\u016f<\/a> kter\u00fd pracuje v tomto prost\u0159ed\u00ed, mus\u00ed p\u0159ekonat v\u00fdzvy, kter\u00fdm ne\u010del\u00ed \u017e\u00e1dn\u00fd jin\u00fd koncov\u00fd p\u0159evod.<\/p>\n

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Provoz na extr\u00e9mn\u00edm svahu (30\u201345 stup\u0148\u016f)<\/div>\n

Balic\u00ed stroje na k\u00e1cen\u00ed a skl\u00e1p\u011bn\u00ed b\u011b\u017en\u011b pracuj\u00ed na svaz\u00edch se sklonem 30 a\u017e 40 stup\u0148\u016f \u2013 co\u017e jsou sklony, na kter\u00e9 by se \u017e\u00e1dn\u00fd bagr, buldozer ani skl\u00e1p\u011b\u010d nepokusil. N\u011bkter\u00e9 specializovan\u00e9 stroje na strm\u00e9 svahy pracuj\u00ed a\u017e do sklonu 45 stup\u0148\u016f (stupe\u0148 100%). P\u0159i sklonu 40 stup\u0148\u016f je slo\u017eka gravita\u010dn\u00ed s\u00edly t\u00e1hnouc\u00ed stroj z kopce 64% hmotnosti stroje. Pohon p\u00e1s\u016f mus\u00ed tuto s\u00edlu nep\u0159etr\u017eit\u011b udr\u017eovat \u2013 a p\u0159i p\u0159emis\u0165ov\u00e1n\u00ed mezi stromy poh\u00e1n\u011bt stroj do kopce proti n\u00ed.<\/p>\n<\/div>\n

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Dopad ko\u0159en\u016f a pa\u0159ez\u016f<\/div>\n

Stroj s ka\u017edou ot\u00e1\u010dkou p\u00e1su p\u0159ej\u00ed\u017ed\u00ed p\u0159es odkryt\u00e9 ko\u0159eny, zasypan\u00e9 pa\u0159ezy a spadl\u00e9 d\u0159evo. Ka\u017ed\u00fd n\u00e1raz p\u0159en\u00e1\u0161\u00ed r\u00e1zov\u00e9 zat\u00ed\u017een\u00ed p\u0159es desky p\u00e1su p\u0159\u00edmo do zub\u016f \u0159et\u011bzov\u00e9ho kola a p\u0159es planetovou p\u0159evodovku do sk\u0159\u00edn\u011b a mont\u00e1\u017en\u00edch \u0161roub\u016f. Jedin\u00fd n\u00e1raz na pa\u0159ez u 35tunov\u00e9ho stroje m\u016f\u017ee vygenerovat okam\u017eitou radi\u00e1ln\u00ed s\u00edlu 50 000 a\u017e 80 000 N na n\u00e1boji \u0159et\u011bzov\u00e9ho kola \u2013 co\u017e odpov\u00edd\u00e1 p\u00e1du 5 a\u017e 8 tun p\u0159\u00edmo na v\u00fdstupn\u00ed lo\u017eisko pohonu p\u00e1su.<\/p>\n<\/div>\n

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Balen\u00ed a balen\u00ed odpadu<\/div>\n

K\u016frov\u00e9 prou\u017eky, \u00faponky vinn\u00e9 r\u00e9vy, mal\u00e9 v\u011btve a vl\u00e1knit\u00fd ko\u0159enov\u00fd materi\u00e1l se ov\u00edjej\u00ed kolem \u0159et\u011bzov\u00e9ho kola, nacp\u00e1vaj\u00ed se mezi patky p\u00e1s\u016f a zakl\u00edn\u00ed se do rozhran\u00ed mezi p\u00e1sy a \u0159et\u011bzov\u00fdmi koly. Tyto ne\u010distoty p\u016fsob\u00ed jako ciz\u00ed t\u011bleso mezi t\u011bsnic\u00edmi plochami a pouzdrem \u2013 tla\u010d\u00ed na odd\u011blovac\u00ed ku\u017eelov\u00e9 t\u011bsn\u011bn\u00ed a vytv\u00e1\u0159\u00ed cestu pro vniknut\u00ed ne\u010distot a vody. V tropick\u00fdch d\u0159evin\u00e1ch m\u016f\u017ee obalen\u00ed vinnou r\u00e9vou, pokud se neodstran\u00ed, b\u011bhem n\u011bkolika minut zastavit pohon p\u00e1s\u016f.<\/p>\n<\/div>\n

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Vzd\u00e1len\u00e1 lokalita, minim\u00e1ln\u00ed p\u0159\u00edstup ke slu\u017eb\u00e1m<\/div>\n

K\u00e1cej\u00edc\u00ed a harvestorov\u00fd stroj m\u016f\u017ee pracovat 50 a\u017e 200 km od nejbli\u017e\u0161\u00edho servisn\u00edho za\u0159\u00edzen\u00ed, kter\u00e9 je p\u0159\u00edstupn\u00e9 pouze po nezpevn\u011bn\u00e9 lesn\u00ed cest\u011b. Porucha pohonu p\u00e1s\u016f v lese znamen\u00e1: p\u0159epravu n\u00e1hradn\u00ed jednotky vrtuln\u00edkem, mobiln\u00ed je\u0159\u00e1b pro zved\u00e1n\u00ed stroje pro p\u0159\u00edstup k podvozku a 2 a\u017e 4 dny ztr\u00e1ty produkce. N\u00e1klady na jedinou poruchu pohonu p\u00e1s\u016f v lese \u2013 n\u00e1hradn\u00ed d\u00edly, mobilizace, ztr\u00e1ta produkce \u2013 mohou 5 a\u017e 10kr\u00e1t p\u0159ekro\u010dit n\u00e1klady na samotnou p\u0159evodovku.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Provoz na svahu \u2013 Jak p\u00e1sov\u00fd pohon dr\u017e\u00ed 35tunov\u00fd stroj na svahu se sklonem 40 stup\u0148\u016f<\/h2>\n

Provoz na svahu je nejv\u00fdrazn\u011bj\u0161\u00ed charakteristikou pohon\u016f p\u00e1s\u016f k\u00e1cec\u00edch stroj\u016f. \u017d\u00e1dn\u00e1 jin\u00e1 aplikace b\u011b\u017en\u011b nevystavuje pohon p\u00e1s\u016f gravita\u010dn\u00edmu bo\u010dn\u00edmu zat\u00ed\u017een\u00ed, asymetrick\u00e9mu rozlo\u017een\u00ed hmotnosti a po\u017eadavk\u016fm na trval\u00e9 udr\u017een\u00ed svahu, kter\u00e9 vy\u017eaduje t\u011b\u017eba d\u0159eva na svahu.<\/p>\n

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Anal\u00fdza svahov\u00e9 s\u00edly \u2014 k\u00e1cec\u00ed stroj Feller Bunger o hmotnosti 35 t na svahu o sklonu 40 stup\u0148\u016f<\/div>\n
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Vzhledem k:<\/div>\n
\u00a0\u00a0Hmotnost stroje: 35 000 kg<\/div>\n
\u00a0\u00a0\u00dahel sklonu: 40 stup\u0148\u016f (t\u0159\u00edda 84%)<\/div>\n
\u00a0\u00a0Rozte\u010d \u0159et\u011bzov\u00e9ho kola: 550 mm (r = 0,275 m)<\/div>\n
\u00a0\u00a0Pohony p\u00e1s\u016f: 2<\/div>\n
Slo\u017eka s\u00edly z kopce (gravitace):<\/div>\n
\u00a0\u00a0F_down = 35 000 x 9,81 x sin(40) = Celkem 220 740 N<\/strong><\/div>\n
\u00a0\u00a0Na skladbu: 110 370 N<\/strong><\/div>\n
Moment brzd\u011bn\u00ed na kolej:<\/div>\n
\u00a0\u00a0T_hold = 110 370 x 0,275 = 30 352 Nm \u2013 mus\u00ed b\u00fdt udr\u017eov\u00e1no neomezen\u011b dlouho<\/strong><\/div>\n
To\u010div\u00fd moment p\u0159i j\u00edzd\u011b do kopce (s valiv\u00fdm odporem 10%):<\/div>\n
\u00a0\u00a0F_roll = 35 000 x 9,81 x cos(40) x 0,10 \/ 2 = 13 141 N<\/strong><\/div>\n
\u00a0\u00a0T_do kopce = (110 370 + 13 141) x 0,275 = 33 966 Nm na stopu<\/strong><\/div>\n
Pou\u017eijte SF = 2,0 (dopad ko\u0159en\u016f + sklon + lesn\u00ed r\u00e1z):<\/div>\n
\u00a0\u00a0Po\u017eadovan\u00e1_t = 33 966 x 2,0 = Minim\u00e1ln\u00ed trval\u00fd to\u010div\u00fd moment 67 932 Nm<\/strong><\/div>\n
\u2192 P\u00e1sov\u00fd pohon Korea Ever-Power 75 000 Nm s jmenovit\u00fdm to\u010div\u00fdm momentem pro lesn\u00ed hospod\u00e1\u0159stv\u00ed \u2714<\/div>\n
\u2192 Brzdn\u00fd moment \u2265 30 352 Nm na \u0159et\u011bzov\u00e9m kole (brzda motoru x p\u0159evodov\u00fd pom\u011br)<\/div>\n<\/div>\n<\/div>\n
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Asymetrick\u00e9 rozlo\u017een\u00ed hmotnosti na svaz\u00edch<\/div>\n

Na p\u0159\u00ed\u010dn\u00e9m svahu o sklonu 40 stup\u0148\u016f nese p\u00e1s sjezdov\u00fdch drah p\u0159ibli\u017en\u011b 65 a\u017e 701 TP3T hmotnosti stroje, zat\u00edmco p\u00e1s stoupaj\u00edc\u00edch drah nese 30 a\u017e 351 TP3T. Pohon p\u00e1su sjezdov\u00fdch drah pracuje s nomin\u00e1ln\u00edm to\u010div\u00fdm momentem 130 a\u017e 1401 TP3T na p\u00e1s. Oba pohony mus\u00ed b\u00fdt dimenzov\u00e1ny na zat\u00ed\u017een\u00ed p\u0159i j\u00edzd\u011b z kopce \u2013 nikoli na pr\u016fm\u011br. Tento asymetrick\u00fd sou\u010dinitel zat\u00ed\u017een\u00ed 1,4 se p\u0159ipo\u010d\u00edt\u00e1v\u00e1 k provozn\u00edmu sou\u010diniteli, co\u017e vede k celkov\u00e9mu sn\u00ed\u017een\u00ed v\u00fdkonu o 2,0 x 1,4 = 2,8 oproti v\u00fdpo\u010dtu ust\u00e1len\u00e9ho stavu na \u00farovni ter\u00e9nu.<\/p>\n<\/div>\n

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Pro\u010d je lesn\u00ed SF 2,0 \u2013 ne 1,5<\/div>\n

Faktor lesnick\u00e9ho provozu 2,0 zohled\u0148uje t\u0159i jevy, kter\u00e9 se ve stavebn\u00edm provozu nevyskytuj\u00ed: (1) r\u00e1zov\u00fd moment z n\u00e1razu ko\u0159en\u016f o radi\u00e1ln\u00ed s\u00edle 50 000 a\u017e 80 000 N na ud\u00e1lost, k n\u011bmu\u017e doch\u00e1z\u00ed 20 a\u017e 50kr\u00e1t za provozn\u00ed hodinu; (2) \u0161pi\u010dky momentu n\u00e1razu na pa\u0159ez o 150 a\u017e 2001 TP3T v ust\u00e1len\u00e9m stavu; a (3) n\u00e1r\u016fsty nap\u011bt\u00ed v kolej\u00edch v d\u016fsledku ucp\u00e1v\u00e1n\u00ed suti mezi deskami p\u00e1s\u016f. Tyto kombinovan\u00e9 \u00fa\u010dinky vytv\u00e1\u0159ej\u00ed efektivn\u00ed ekvivalentn\u00ed trval\u00e9 zat\u00ed\u017een\u00ed 1,8 a\u017e 2,2n\u00e1sobek vypo\u010d\u00edtan\u00e9ho momentu ta\u017een\u00ed v ust\u00e1len\u00e9m stavu.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\"Planetov\u00e1<\/p>\n

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Lesn\u00ed technick\u00e1 \u00faprava t\u011bsn\u011bn\u00ed \u2013 Ochrana p\u0159evodovky v prost\u0159ed\u00ed, kter\u00e9 by mohlo po\u0161kodit t\u011bsn\u011bn\u00ed<\/h2>\n

Dvouku\u017eelov\u00e9 t\u011bsn\u011bn\u00ed na p\u00e1sov\u00e9m pohonu rypadla se pot\u00fdk\u00e1 s bl\u00e1tem, vodou a p\u00edskem. Dvouku\u017eelov\u00e9 t\u011bsn\u011bn\u00ed na p\u00e1sov\u00e9m pohonu k\u00e1cec\u00edho harvestora se s t\u00edm v\u0161\u00edm pot\u00fdk\u00e1 \u2013 a tak\u00e9 s vl\u00e1kny k\u016fry, \u00faponky r\u00e9vy vinn\u00e9, pilinami pota\u017een\u00fdmi prysky\u0159ic\u00ed, \u00falomky ko\u0159en\u016f a d\u0159evn\u00edmi \u00falomky, kter\u00e9 se ov\u00edjej\u00ed kolem ozuben\u00e9ho kola a fyzicky odd\u011bluj\u00ed t\u011bsnic\u00ed plochy od sebe. Standardn\u00ed t\u011bsn\u011bn\u00ed konstruk\u010dn\u00ed t\u0159\u00eddy s \u017eivotnost\u00ed 6 000 a\u017e 8 000 hodin u rypadla mohou v lesn\u00edm provozu vydr\u017eet pouze 2 000 a\u017e 3 000 hodin.<\/p>\n

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Vysoce odoln\u00fd dvojit\u00fd ku\u017eel s deflektorem ne\u010distot<\/div>\n

Lesn\u00ed pohony pou\u017e\u00edvaj\u00ed dvojit\u00e1 ku\u017eelov\u00e1 t\u011bsn\u011bn\u00ed s kalen\u00fdmi ocelov\u00fdmi \u010delmi a zv\u00fd\u0161enou pru\u017einovou silou \u2013 o 15 a\u017e 251 TP3T vy\u0161\u0161\u00ed kontaktn\u00ed tlak ne\u017e t\u011bsn\u011bn\u00ed stavebn\u00ed t\u0159\u00eddy. Vn\u011bj\u0161\u00ed krou\u017eek pro deflektor ne\u010distot (n\u011bkdy naz\u00fdvan\u00fd \u201eochrann\u00fd krou\u017eek t\u011bsn\u011bn\u00ed\u201c nebo \u201ek\u016frov\u00fd krou\u017eek\u201c) je p\u0159i\u0161roubov\u00e1n vn\u011b t\u011bsn\u011bn\u00ed, aby fyzicky zabr\u00e1nil vniknut\u00ed vl\u00e1knit\u00e9ho materi\u00e1lu na t\u011bsnic\u00ed \u010deln\u00ed plochy. Tento deflektor je opot\u0159ebiteln\u00fd prvek \u2013 vym\u011b\u0148uje se v intervalech 1 000 a\u017e 2 000 hodin \u2013 kter\u00fd se ob\u011btuje pro ochranu t\u011bsn\u011bn\u00ed.<\/p>\n<\/div>\n

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Syst\u00e9m p\u0159etlakov\u00e9ho odvzdu\u0161\u0148ov\u00e1n\u00ed<\/div>\n

Standardn\u00ed odvzdu\u0161\u0148ovac\u00ed ventily umo\u017e\u0148uj\u00ed vniknut\u00ed jemn\u00fdch pilin a \u010d\u00e1stic prysky\u0159ice do sk\u0159\u00edn\u011b b\u011bhem f\u00e1ze chlazen\u00ed ka\u017ed\u00e9ho tepeln\u00e9ho cyklu. Pohony p\u00e1s\u016f ur\u010den\u00e9 pro lesn\u00ed hospod\u00e1\u0159stv\u00ed pou\u017e\u00edvaj\u00ed p\u0159etlakov\u00e9 odvzdu\u0161\u0148ovac\u00ed syst\u00e9my, kter\u00e9 udr\u017euj\u00ed vnit\u0159n\u00ed tlak 0,1 a\u017e 0,3 baru \u2013 zabra\u0148uj\u00ed tak vnik\u00e1n\u00ed \u010d\u00e1stic b\u011bhem chlazen\u00ed. Tlakov\u00fd syst\u00e9m zvy\u0161uje n\u00e1klady, ale prodlu\u017euje interval kontaminace olejem z 500 a\u017e 750 hodin (standardn\u00ed odvzdu\u0161\u0148ovac\u00ed ventil) na 1 500 a\u017e 2 000 hodin v prost\u0159ed\u00ed s vysok\u00fdm obsahem pilin.<\/p>\n<\/div>\n

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Zes\u00edlen\u00e9 pouzdro a b\u0159i\u0161n\u00ed p\u00e1nev<\/div>\n

Podvozky harvestor\u016f jsou vybaveny ocelov\u00fdmi ochrann\u00fdmi vanami, kter\u00e9 chr\u00e1n\u00ed sk\u0159\u00ed\u0148 pohonu p\u00e1s\u016f p\u0159ed p\u0159\u00edm\u00fdmi n\u00e1razy na pa\u0159ezy. Bo\u010dn\u00ed n\u00e1razy od v\u00fd\u010dn\u011blk\u016f ko\u0159en\u016f a \u0161ikm\u00fdch zbytk\u016f pa\u0159ez\u016f v\u0161ak st\u00e1le mohou dos\u00e1hnout p\u0159\u00edruby sk\u0159\u00edn\u011b. Planetov\u00e1 p\u0159evodovka Korea Ever-Power<\/a> Pouzdra pro lesnick\u00e9 aplikace pou\u017e\u00edvaj\u00ed tv\u00e1rnou litinu QT700-2 (oproti QT500-7 pro standardn\u00ed konstrukci) \u2013 poskytuj\u00edc\u00ed vy\u0161\u0161\u00ed r\u00e1zovou hou\u017eevnatost 40% na p\u0159\u00edrub\u011b pouzdra, aby odol\u00e1vala prask\u00e1n\u00ed zp\u016fsoben\u00e9mu bo\u010dn\u00edmi n\u00e1razy do pa\u0159ezu.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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T\u0159i poruchy, kter\u00e9 dominuj\u00ed p\u0159i v\u00fdm\u011bn\u011b pohonu p\u00e1s\u016f k\u00e1cec\u00edch stroj\u016f<\/h2>\n
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1<\/div>\n
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Selh\u00e1n\u00ed t\u011bsn\u011bn\u00ed v d\u016fsledku vniknut\u00ed suti \u2013 dominantn\u00ed zp\u016fsob selh\u00e1n\u00ed v lesnictv\u00ed<\/div>\n

Vl\u00e1kna k\u016fry, vinn\u00e1 r\u00e9va a \u00falomky d\u0159eva se ov\u00edjej\u00ed kolem n\u00e1boje \u0159et\u011bzov\u00e9ho kola a prod\u00edraj\u00ed se mezi t\u011bsnic\u00ed plochy s dvojit\u00fdm ku\u017eelem. Jakmile vl\u00e1knit\u00fd materi\u00e1l p\u0159eklene t\u011bsnic\u00ed mezeru, funguje jako knot \u2013 nas\u00e1v\u00e1 vodu a jemn\u00e9 \u010d\u00e1stice do olejov\u00e9 l\u00e1zn\u011b. B\u011bhem 200 a\u017e 500 hodin od vniknut\u00ed ne\u010distot olej ztmavne, lo\u017eiskov\u00e9 plochy koroduj\u00ed a hlu\u010dnost pohonu p\u00e1s\u016f se zvy\u0161uje. Toto je nej\u010dast\u011bj\u0161\u00ed p\u0159\u00ed\u010dina v\u00fdm\u011bny pohonu p\u00e1s\u016f v lesnictv\u00ed \u2013 a d\u016fvod, pro\u010d je krou\u017eek deflektoru ne\u010distot a denn\u00ed \u010di\u0161t\u011bn\u00ed \u0159et\u011bzov\u00e9ho kola nejn\u00e1kladov\u011b nejefektivn\u011bj\u0161\u00edmi postupy \u00fadr\u017eby p\u0159i t\u011b\u017eb\u011b d\u0159eva.<\/p>\n

Prevence: Denn\u011b \u010dist\u011bte oblast \u0159et\u011bzov\u00e9ho kola a t\u011bsn\u011bn\u00ed. Kontrolujte a vym\u011b\u0148ujte krou\u017eek deflektoru ne\u010distot po 1 000\u20132 000 hodin\u00e1ch. V lesnictv\u00ed s t\u011b\u017ek\u00fdmi ne\u010distotami vym\u011b\u0148ujte olej v intervalech 750 hodin.<\/div>\n<\/div>\n<\/div>\n
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2<\/div>\n
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Prask\u00e1n\u00ed p\u0159\u00edruby pouzdra v d\u016fsledku bo\u010dn\u00edho n\u00e1razu ko\u0159ene a pa\u0159ezu<\/div>\n

Standardn\u00ed tv\u00e1rn\u00e1 litinov\u00e1 t\u011blesa QT500-7 odol\u00e1vaj\u00ed axi\u00e1ln\u00edmu a radi\u00e1ln\u00edmu zat\u00ed\u017een\u00ed p\u0159i b\u011b\u017en\u00e9 j\u00edzd\u011b. V lesn\u00edm prost\u0159ed\u00ed v\u0161ak doch\u00e1z\u00ed k bo\u010dn\u00edm n\u00e1raz\u016fm \u2013 t\u011bleso pohonu p\u00e1s\u016f p\u0159i p\u0159ej\u00ed\u017ed\u011bn\u00ed stroje naraz\u00ed na ko\u0159enov\u00fd v\u00fdstupek nebo zbytek pa\u0159ezu. Tyto bo\u010dn\u00ed n\u00e1razy koncentruj\u00ed nap\u011bt\u00ed v oblasti mont\u00e1\u017en\u00ed p\u0159\u00edruby t\u011blesa, kde tlou\u0161\u0165ka st\u011bny p\u0159ech\u00e1z\u00ed z hlavn\u00edho t\u011blesa t\u011blesa do rozte\u010de \u0161roub\u016f. Po stovk\u00e1ch takov\u00fdch n\u00e1raz\u016f se na polom\u011bru p\u0159\u00edruby za\u010d\u00ednaj\u00ed objevovat mikrotrhliny. B\u011bhem 3 000 a\u017e 5 000 hodin se trhliny \u0161\u00ed\u0159\u00ed, dokud se p\u0159\u00edruba t\u011blesa nepraskne \u2013 co\u017e je katastrof\u00e1ln\u00ed selh\u00e1n\u00ed, kter\u00e9 nelze v ter\u00e9nu opravit.<\/p>\n

Prevence: Pro lesnictv\u00ed pou\u017eijte tv\u00e1rn\u00e1 litinov\u00e1 t\u011blesa QT700-2. Po ka\u017ed\u00fdch 1 000 hodin\u00e1ch provozu kontrolujte polom\u011br p\u0159\u00edruby na p\u0159\u00edtomnost mikrotrhlin pomoc\u00ed penetra\u010dn\u00ed nebo magnetick\u00e9 \u010d\u00e1sticov\u00e9 kontroly.<\/div>\n<\/div>\n<\/div>\n
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3<\/div>\n
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P\u0159et\u00ed\u017een\u00ed v\u00fdstupn\u00edho lo\u017eiska v d\u016fsledku radi\u00e1ln\u00edch sil n\u00e1razu na pa\u0159ez<\/div>\n

Kdy\u017e deska p\u00e1su naraz\u00ed na pa\u0159ez nebo velk\u00fd ko\u0159en, n\u00e1raz generuje na n\u00e1boji \u0159et\u011bzov\u00e9ho kola radi\u00e1ln\u00ed s\u00edlu o s\u00edle 50 000 a\u017e 80 000 N \u2013 kr\u00e1tkodob\u00fd r\u00e1z, kter\u00fd mus\u00ed v\u00fdstupn\u00ed lo\u017eisko absorbovat bez trval\u00e9 deformace (brinelingu). Standardn\u00ed v\u00fdstupn\u00ed lo\u017eiska pohonu p\u00e1s\u016f, dimenzovan\u00e1 na statickou radi\u00e1ln\u00ed \u00fanosnost zat\u00ed\u017een\u00ed p\u0159i pojezdu (25 000 a\u017e 40 000 N), nemaj\u00ed dostate\u010dnou rezervu C0 (statick\u00e9ho zat\u00ed\u017een\u00ed) pro maxim\u00e1ln\u00ed n\u00e1raz do pa\u0159ezu. P\u0159i v\u00edce ne\u017e 10 000 a\u017e 30 000 n\u00e1razech do pa\u0159ezu ro\u010dn\u011b se na ob\u011b\u017en\u00e9 dr\u00e1ze lo\u017eiska vytv\u00e1\u0159ej\u00ed stopy brinellingu \u2013 ploch\u00e1 m\u00edsta z n\u00e1razov\u00e9 deformace. Tyto stopy zp\u016fsobuj\u00ed periodick\u00e9 vibrace, kdy\u017e jimi v\u00e1le\u010dky proch\u00e1zej\u00ed, co\u017e urychluje \u00fanavu ob\u011b\u017en\u00e9 dr\u00e1hy a nakonec vede k odlupov\u00e1n\u00ed.<\/p>\n

Prevence: Specifikujte pohony p\u00e1s\u016f s v\u00fdstupn\u00edmi lo\u017eisky dimenzovan\u00fdmi na C0 \u2265 2x maxim\u00e1ln\u00ed s\u00edla n\u00e1razu do pa\u0159ezu. Pro v\u00fdstupn\u00ed polohu pou\u017eijte ku\u017eel\u00edkov\u00e1 lo\u017eiska (ne kuli\u010dkov\u00e1 s hlubokou dr\u00e1\u017ekou) \u2013 l\u00e9pe odol\u00e1vaj\u00ed brinellingu p\u0159i n\u00e1razu.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n
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Planetov\u00e1 p\u0159evodovka s p\u00e1sov\u00fdm pohonem pro harvestory \u2013 \u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
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Pro\u010d je servisn\u00ed faktor u k\u00e1cec\u00edch harvestor\u016f vy\u0161\u0161\u00ed ne\u017e u bagr\u016f?<\/h3>\n

Koeficient \u00fanavy materi\u00e1lu rypadla 2,0 zohled\u0148uje protib\u011b\u017en\u00e9 obousm\u011brn\u00e9 zat\u00ed\u017een\u00ed \u2013 jev kroutic\u00edho momentu. Koeficient \u00fanavy materi\u00e1lu k\u00e1cec\u00edho harvestora 2,0 zohled\u0148uje n\u00e1raz ko\u0159en\u016f\/pa\u0159ez\u016f \u2013 jev radi\u00e1ln\u00ed s\u00edly \u2013 a tak\u00e9 zat\u00ed\u017een\u00ed svahu a n\u00e1r\u016fsty nap\u011bt\u00ed v p\u00e1sech vyvolan\u00e9 sutinami. A\u010dkoli je numerick\u00fd koeficient \u00fanavy materi\u00e1lu stejn\u00fd, fyzik\u00e1ln\u00ed jevy se li\u0161\u00ed. Koeficient \u00fanavy materi\u00e1lu k\u00e1cec\u00edho harvestora \u0159e\u0161\u00ed r\u00e1zov\u00e9 ot\u0159esy (vysokofrekven\u010dn\u00ed, n\u00e1hodn\u00e9, radi\u00e1ln\u00ed), zat\u00edmco koeficient \u00fanavy materi\u00e1lu rypadla \u0159e\u0161\u00ed obr\u00e1cen\u00ed kroutic\u00edho momentu (p\u0159edv\u00eddateln\u00fd, obousm\u011brn\u00fd, torzn\u00ed). Reakce konstrukce p\u0159evodovky na ka\u017ed\u00fd z nich je odli\u0161n\u00e1: k\u00e1cec\u00ed harvestor pot\u0159ebuje t\u011b\u017e\u0161\u00ed v\u00fdstupn\u00ed lo\u017eisko a pevn\u011bj\u0161\u00ed kryt, zat\u00edmco rypadlo pot\u0159ebuje obousm\u011brnou \u00fanavovou odolnost zub\u016f ozuben\u00e9ho kola.<\/p>\n<\/div>\n

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Jak\u00e1 je typick\u00e1 \u017eivotnost lesn\u00edho n\u00e1honu v porovn\u00e1n\u00ed se stavebn\u00edmi kolejemi?<\/h3>\n

Lesnictv\u00ed: 3 000 a\u017e 6 000 hodin. Stavebnictv\u00ed (rypadlo): 8 000 a\u017e 12 000 hodin. Lesn\u00ed prost\u0159ed\u00ed zkracuje \u017eivotnost p\u00e1sov\u00e9ho pohonu o 40 a\u017e 601 TP3T ve srovn\u00e1n\u00ed se stavebnictv\u00edm p\u0159i stejn\u00e9m jmenovit\u00e9m kroutic\u00edm momentu \u2013 p\u0159edev\u0161\u00edm kv\u016fli degradaci t\u011bsn\u011bn\u00ed v d\u016fsledku suti, r\u00e1zov\u00e9mu zat\u00ed\u017een\u00ed od ko\u0159en\u016f a pa\u0159ez\u016f a trval\u00e9mu zat\u00ed\u017een\u00ed svahu, se kter\u00fdm se stavebn\u00ed stroje nikdy nesetkaj\u00ed. Lesn\u00ed provozovatel\u00e9 by m\u011bli pl\u00e1novat v\u00fdm\u011bnu p\u00e1sov\u00e9ho pohonu po 4 000 a\u017e 5 000 hodin\u00e1ch a udr\u017eovat n\u00e1hradn\u00ed jednotku na m\u00edst\u011b nebo v nejbli\u017e\u0161\u00edm lesn\u00edm skladu, aby se minimalizovaly prostoje v lese.<\/p>\n<\/div>\n

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Mohu na k\u00e1cec\u00edm harvestoru pou\u017e\u00edt standardn\u00ed p\u00e1sov\u00fd pohon stavebn\u00ed t\u0159\u00eddy?<\/h3>\n

Nedoporu\u010duje se. P\u00e1sov\u00fd pohon stavebn\u00ed t\u0159\u00eddy se stejn\u00fdm jmenovit\u00fdm kroutic\u00edm momentem sel\u017ee v lesn\u00edm provozu b\u011bhem 1 500 a\u017e 3 000 hodin kv\u016fli t\u0159em nedostatk\u016fm: (1) standardn\u00ed dvojit\u00e1 ku\u017eelov\u00e1 t\u011bsn\u011bn\u00ed bez deflektor\u016f ne\u010distot, kter\u00e1 selh\u00e1vaj\u00ed po 1 000 a\u017e 2 000 hodin\u00e1ch v d\u016fsledku vniknut\u00ed k\u016fry\/pop\u00ednav\u00e9 rostliny; (2) standardn\u00ed p\u0159\u00edruba pouzdra QT500-7, kter\u00e1 prask\u00e1 po 2 000 a\u017e 4 000 hodin\u00e1ch v d\u016fsledku bo\u010dn\u00edch n\u00e1raz\u016f; a (3) standardn\u00ed v\u00fdstupn\u00ed lo\u017eiska bez rezervy C0 pro s\u00edly n\u00e1razu do pa\u0159ezu, kter\u00e1 se zatvrd\u00ed po 2 000 a\u017e 3 000 hodin\u00e1ch. P\u00e1sov\u00fd pohon ur\u010den\u00fd pro lesn\u00ed hospod\u00e1\u0159stv\u00ed je o 15 a\u017e 251 TP3T dra\u017e\u0161\u00ed ne\u017e pohon stavebn\u00ed t\u0159\u00eddy, ale v lese nab\u00edz\u00ed 2 a\u017e 3kr\u00e1t del\u0161\u00ed \u017eivotnost \u2013 co\u017e je s v\u00fdrazn\u00fdm rozd\u00edlem nejni\u017e\u0161\u00ed n\u00e1klady na provozn\u00ed hodinu.<\/p>\n<\/div>\n

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Jak \u010dasto by se m\u011bl kontrolovat a vym\u011b\u0148ovat krou\u017eek deflektoru ne\u010distot?<\/h3>\n

Denn\u011b kontrolujte b\u011bhem p\u0159edb\u011b\u017en\u00e9 prohl\u00eddky. Hledejte: deformaci deflektoru, praskliny, nadm\u011brn\u00e9 opot\u0159eben\u00ed kontaktn\u00ed plochy a nahromad\u011bn\u00ed ne\u010distot mezi deflektorem a t\u011bsn\u011bn\u00edm. Vym\u011b\u0148te po 1 000 a\u017e 2 000 hodin\u00e1ch provozu nebo kdy\u017e mezera mezi deflektorem a t\u011bsn\u011bn\u00edm p\u0159ekro\u010d\u00ed specifikaci v\u00fdrobce \u2013 podle toho, co nastane d\u0159\u00edve. V provozech s tropick\u00fdm tvrd\u00fdm d\u0159evem s velk\u00fdm mno\u017estv\u00edm vinn\u00e9 r\u00e9vy m\u016f\u017ee b\u00fdt nutn\u00e9 deflektor vym\u011bnit po 500 a\u017e 800 hodin\u00e1ch provozu. Deflektor je spot\u0159ebn\u00ed materi\u00e1l \u2013 je navr\u017een tak, aby se opot\u0159ebov\u00e1val nam\u00edsto dvojit\u00e9ho ku\u017eelov\u00e9ho t\u011bsn\u011bn\u00ed. Spr\u00e1vnou filozofi\u00ed \u00fadr\u017eby je zach\u00e1zet s n\u00edm jako s jednor\u00e1zov\u00fdm ochrann\u00fdm krytem (sp\u00ed\u0161e ne\u017e s trvalou sou\u010d\u00e1st\u00ed).<\/p>\n<\/div>\n

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Dod\u00e1v\u00e1 Korea Ever-Power p\u00e1sov\u00e9 pohony ur\u010den\u00e9 pro lesnick\u00e9 \u00fa\u010dely s pouzdry QT700-2?<\/h3>\n

Ano. Spole\u010dnost Korea Ever-Power vyr\u00e1b\u00ed planetov\u00e9 p\u0159evodovky s p\u00e1sov\u00fdm pohonem pro lesn\u00ed hospod\u00e1\u0159stv\u00ed s pouzdry z tv\u00e1rn\u00e9 litiny QT700-2, odoln\u00fdmi dvojit\u00fdmi ku\u017eelov\u00fdmi t\u011bsn\u011bn\u00edmi s vn\u011bj\u0161\u00edmi krou\u017eky pro odv\u00e1d\u011bn\u00ed ne\u010distot, p\u0159etlakov\u00fdmi odvzdu\u0161\u0148ovac\u00edmi syst\u00e9my a ku\u017eel\u00edkov\u00fdmi v\u00fdstupn\u00edmi lo\u017eisky odoln\u00fdmi n\u00e1razu. K dispozici od 20 000 do 100 000 Nm pro harvestory, harvestory, vyv\u00e1\u017eec\u00ed traktory a vyv\u00e1\u017eec\u00ed traktory v hmotnostn\u00ed t\u0159\u00edd\u011b 15 a\u017e 50 tun. Pro ov\u011b\u0159en\u00e9 doporu\u010den\u00ed pro lesn\u00ed hospod\u00e1\u0159stv\u00ed uve\u010fte v\u00fdrobce stroje, model a specifikaci sklonu.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Lesn\u00ed p\u00e1sov\u00e9 pohony \u2013 vyroben\u00e9 pro p\u016fdu, kterou les poskytuje<\/div>\n

Planetov\u00e9 p\u0159evodovky Korea Ever-Power s pohonem p\u00e1s\u016f pro lesn\u00ed hospod\u00e1\u0159stv\u00ed \u2013 sk\u0159\u00ed\u0148 QT700-2, deflektory ne\u010distot, p\u0159etlakov\u00e9 odvzdu\u0161\u0148ova\u010de, v\u00fdstupn\u00ed lo\u017eiska odoln\u00e1 n\u00e1razu \u2013 od 20 000 do 100 000 Nm. Pro doporu\u010den\u00ed pro lesn\u00ed hospod\u00e1\u0159stv\u00ed uve\u010fte model va\u0161eho k\u00e1cec\u00edho harvestora a maxim\u00e1ln\u00ed specifikaci sklonu.<\/p>\n<\/div>\n

Zobrazit sortiment pohonu p\u00e1s\u016f \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":"

Application Engineering Feller Bunchers \u00b7 Forestry Track Drive Planetary Gearbox for Feller Bunchers \u2014 Where the Ground Itself Is an Impact Test No other tracked machine operates on terrain this hostile. A 35-tonne feller buncher climbs a 40-degree slope, drives over exposed roots the diameter of a human thigh, absorbs stump strikes that jar the […]<\/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-1045","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\/1045","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=1045"}],"version-history":[{"count":2,"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/posts\/1045\/revisions"}],"predecessor-version":[{"id":1050,"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/posts\/1045\/revisions\/1050"}],"wp:attachment":[{"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/media?parent=1045"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/categories?post=1045"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/cs\/wp-json\/wp\/v2\/tags?post=1045"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}