{"id":1244,"date":"2026-05-20T07:45:05","date_gmt":"2026-05-20T07:45:05","guid":{"rendered":"https:\/\/pto-gearbox.net\/?p=1244"},"modified":"2026-05-20T07:45:05","modified_gmt":"2026-05-20T07:45:05","slug":"snow-plow-gearbox-engineering-for-sub-zero-duty","status":"publish","type":"post","link":"https:\/\/pto-gearbox.net\/cs\/snow-plow-gearbox-engineering-for-sub-zero-duty\/","title":{"rendered":"P\u0159evodovka sn\u011b\u017en\u00e9ho pluhu: Konstrukce pro pr\u00e1ci v podm\u00ednk\u00e1ch mrazu"},"content":{"rendered":"
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P\u0159evodovka sn\u011b\u017en\u00e9ho pluhu: Konstrukce pro pr\u00e1ci v podm\u00ednk\u00e1ch mrazu<\/h1>\n

Teplota ukazuje -25 \u00b0C, p\u0159es noc napadlo \u010dty\u0159icet centimetr\u016f mokr\u00e9ho sn\u011bhu a o\u010dek\u00e1v\u00e1 se, \u017ee m\u011bstsk\u00fd pluh odklid\u00ed dvan\u00e1ct kilometr\u016f silnice, ne\u017e za\u010dne rann\u00ed cesta do pr\u00e1ce. Ka\u017ed\u00e1 sou\u010d\u00e1stka v hnac\u00edm \u00fastroj\u00ed pluhu mus\u00ed fungovat bezchybn\u011b \u2013 po\u010d\u00ednaje p\u0159evodovkou, kter\u00e1 p\u0159em\u011b\u0148uje v\u00fdkon motoru nebo v\u00fdvodov\u00e9ho h\u0159\u00eddele na rotaci radlice.<\/p>\n

Vy\u017e\u00e1dejte si nez\u00e1vaznou cenovou nab\u00eddku<\/a><\/p>\n<\/div>\n<\/div>\n

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Co d\u011bl\u00e1 p\u0159evodovka sn\u011b\u017en\u00e9ho pluhu \u2013 a pro\u010d chlad v\u0161echno m\u011bn\u00ed<\/h2>\n

A p\u0159evodovka sn\u011b\u017en\u00e9ho pluhu<\/a> P\u0159en\u00e1\u0161\u00ed v\u00fdkon z v\u00fdvodov\u00e9ho h\u0159\u00eddele vozidla, hydraulick\u00e9ho motoru nebo samostatn\u00e9ho motoru do mechanismu pro odkl\u00edzen\u00ed sn\u011bhu \u2013 a\u0165 u\u017e se jedn\u00e1 o pohon vp\u0159edu namontovan\u00e9 radlice, rota\u010dn\u00edho sn\u011bhov\u00e9ho fr\u00e9zy nebo pohon rozmetadla soli vzadu. V z\u00e1sad\u011b pln\u00ed stejnou funkci jako jak\u00e1koli pravo\u00fahl\u00e1 nebo \u0159adov\u00e1 p\u0159evodovka: p\u0159esm\u011brov\u00e1v\u00e1 rota\u010dn\u00ed energii, upravuje ot\u00e1\u010dky a to\u010div\u00fd moment a podep\u00edr\u00e1 hnan\u00fd h\u0159\u00eddel prost\u0159ednictv\u00edm lo\u017eisek. Rozd\u00edl spo\u010d\u00edv\u00e1 v tom, \u017ee ka\u017ed\u00e1 z t\u011bchto funkc\u00ed mus\u00ed spolehliv\u011b fungovat p\u0159i teplot\u00e1ch, kter\u00e9 mohou klesnout pod -30 \u00b0C, p\u0159i r\u00e1zov\u00e9m zat\u00ed\u017een\u00ed od zmrzl\u00e9ho sn\u011bhu a skryt\u00fdch p\u0159ek\u00e1\u017eek a v prost\u0159ed\u00ed nasycen\u00e9m posypovou sol\u00ed, rozmrazovac\u00edmi chemik\u00e1liemi a abrazivn\u00edmi ne\u010distotami.<\/p>\n

Standardn\u00ed konstrukce zem\u011bd\u011blsk\u00fdch p\u0159evodovek ur\u010den\u00fdch pro pr\u00e1ci na poli v m\u00edrn\u00e9m obdob\u00ed se p\u0159i odkl\u00edzen\u00ed sn\u011bhu za teplot pod bodem mrazu pot\u00fdkaj\u00ed se t\u0159emi specifick\u00fdmi poruchov\u00fdmi re\u017eimy: zv\u00fd\u0161en\u00ed viskozity maziva, kter\u00e9 zp\u016fsobuje nedostatek lo\u017eisek b\u011bhem studen\u00e9ho startu, ztvrdnut\u00ed t\u011bsn\u011bn\u00ed, kter\u00e9 otev\u00edr\u00e1 cesty net\u011bsnosti b\u011bhem prvn\u00ed zimy, a k\u0159ehnut\u00ed sk\u0159\u00edn\u011b v materi\u00e1lech, kter\u00e9 nejsou dimenzov\u00e1ny na n\u00e1razy p\u0159i n\u00edzk\u00fdch teplot\u00e1ch. Speci\u00e1ln\u011b navr\u017een\u00e1 p\u0159evodovka pro sn\u011b\u017en\u00fd pluh \u0159e\u0161\u00ed ka\u017ed\u00fd z t\u011bchto probl\u00e9m\u016f v\u00fdb\u011brem materi\u00e1lu, specifikac\u00ed maziva a volbou technologie t\u011bsn\u011bn\u00ed, kter\u00e9 se v\u00fdrazn\u011b li\u0161\u00ed od prot\u011bj\u0161k\u016f pro tepl\u00e9 po\u010das\u00ed.<\/p>\n

\"Produkt<\/div>\n

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Maz\u00e1n\u00ed v chladn\u00e9m po\u010das\u00ed: Pro\u010d je viskozita prvn\u00edm technick\u00fdm rozhodnut\u00edm<\/h2>\n

Viskozita p\u0159evodov\u00e9ho oleje se zdvojn\u00e1sobuje p\u0159ibli\u017en\u011b ka\u017ed\u00fdch 10 \u00b0C poklesu teploty. Miner\u00e1ln\u00ed p\u0159evodov\u00fd olej EP 80W-90, kter\u00fd voln\u011b te\u010de p\u0159i 20 \u00b0C, p\u0159i -20 \u00b0C dostate\u010dn\u011b zhoustne, aby odolal cirkulaci p\u0159es z\u00e1b\u011br ozuben\u00fdch kol, a zanechal lo\u017eiska a povrchy zub\u016f such\u00e9 b\u011bhem kritick\u00fdch prvn\u00edch minut studen\u00e9ho startu. Pr\u00e1v\u011b v t\u011bchto prvn\u00edch minut\u00e1ch doch\u00e1z\u00ed k v\u011bt\u0161in\u011b po\u0161kozen\u00ed p\u0159evodovek v chladn\u00e9m po\u010das\u00ed \u2013 kontakt kovu s kovem bez dostate\u010dn\u00e9ho mazac\u00edho filmu zp\u016fsobuje zrychlen\u00e9 opot\u0159eben\u00ed povrchu, mikro-d\u016flky a r\u00fdhy, kter\u00e9 zkracuj\u00ed efektivn\u00ed \u017eivotnost p\u0159evodovky o stovky hodin.<\/p>\n

P\u0159evodovky sn\u011b\u017en\u00fdch pluh\u016f vy\u017eaduj\u00ed mazivo s v\u00fdrazn\u011b ni\u017e\u0161\u00edm bodem tuhnut\u00ed a lep\u0161\u00edmi vlastnostmi tekutosti za n\u00edzk\u00fdch teplot ne\u017e standardn\u00ed zem\u011bd\u011blsk\u00fd p\u0159evodov\u00fd olej. Dv\u011bma hlavn\u00edmi mo\u017enostmi jsou syntetick\u00e9 p\u0159evodov\u00e9 oleje s vysok\u00fdm v\u00fdkonem (EP) (na b\u00e1zi PAO nebo PAG) ur\u010den\u00e9 pro bod tuhnut\u00ed \u221240 \u00b0C nebo ni\u017e\u0161\u00ed a polosyntetick\u00e9 sm\u011bsi, kter\u00e9 nab\u00edzej\u00ed lep\u0161\u00ed tekutost za studena za ni\u017e\u0161\u00ed cenu ne\u017e pln\u011b syntetick\u00e9 oleje. Syntetick\u00fd p\u0159evodov\u00fd olej s vysok\u00fdm v\u00fdkonem 75W-90 poskytuje ochranu p\u0159i studen\u00e9m startu zimn\u00ed t\u0159\u00eddy 75W a z\u00e1rove\u0148 si zachov\u00e1v\u00e1 tlou\u0161\u0165ku filmu t\u0159\u00eddy 90 p\u0159i norm\u00e1ln\u00ed provozn\u00ed teplot\u011b \u2013 co\u017e z n\u011bj \u010din\u00ed v\u00fdchoz\u00ed doporu\u010den\u00ed pro p\u0159evodovky sn\u011b\u017en\u00fdch pluh\u016f.<\/p>\n

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\ud83c\udf21\ufe0f Pravidlo v\u00fdb\u011bru maziva pro sn\u011bhov\u00e9 podm\u00ednky<\/p>\n

Bod tuhnut\u00ed p\u0159evodov\u00e9ho oleje mus\u00ed b\u00fdt alespo\u0148 o 10 \u00b0C ni\u017e\u0161\u00ed ne\u017e nejni\u017e\u0161\u00ed o\u010dek\u00e1van\u00e1 okoln\u00ed teplota p\u0159i spu\u0161t\u011bn\u00ed. Pokud va\u0161e za\u0159\u00edzen\u00ed startuje p\u0159i teplot\u011b -25 \u00b0C, mus\u00ed b\u00fdt bod tuhnut\u00ed oleje -35 \u00b0C nebo ni\u017e\u0161\u00ed. Bod tuhnut\u00ed, kter\u00fd pouze odpov\u00edd\u00e1 okoln\u00ed teplot\u011b, znamen\u00e1, \u017ee olej je p\u0159i spu\u0161t\u011bn\u00ed polotuh\u00fd a nem\u016f\u017ee cirkulovat do z\u00e1b\u011bru ozuben\u00e9ho kola a lo\u017eisek.<\/p>\n<\/div>\n

Objem oleje je tak\u00e9 v p\u0159evodovk\u00e1ch pracuj\u00edc\u00edch v chladn\u00e9m po\u010das\u00ed d\u016fle\u017eit\u011bj\u0161\u00ed ne\u017e v p\u0159evodovk\u00e1ch pracuj\u00edc\u00edch v m\u00edrn\u00e9m podneb\u00ed. P\u0159evodovka napln\u011bn\u00e1 na spr\u00e1vnou hladinu zaji\u0161\u0165uje, \u017ee spodn\u00ed lo\u017eisko je pono\u0159eno v oleji, i kdy\u017e je mazivo studen\u00e9, a jeho objem se m\u00edrn\u011b zmen\u0161\u00ed. Nedostate\u010dn\u00e9 napln\u011bn\u00ed i o 50 ml m\u016f\u017ee zp\u016fsobit, \u017ee spodn\u00ed ku\u017eel\u00edkov\u00e9 lo\u017eisko bude b\u011bhem studen\u00fdch start\u016f \u010d\u00e1ste\u010dn\u011b odkryt\u00e9 \u2013 co\u017e je stav, kter\u00fd by byl v tepl\u00e9m po\u010das\u00ed ne\u0161kodn\u00fd, ale zp\u016fsobuje rychl\u00e9 opot\u0159eben\u00ed, kdy\u017e hust\u00fd, studen\u00fd olej nem\u016f\u017ee lo\u017eisko st\u0159\u00edkat ze z\u00e1b\u011bru ozuben\u00e9ho kola nad n\u00edm.<\/p>\n

U provoz\u016f, kter\u00e9 mezi sn\u011bhov\u00fdmi ud\u00e1lostmi skladuj\u00ed za\u0159\u00edzen\u00ed venku, kr\u00e1tk\u00fd p\u0159edb\u011b\u017en\u00fd chod na volnob\u011bh v\u00fdrazn\u011b prodlu\u017euje \u017eivotnost lo\u017eisek. B\u011bh v\u00fdvodov\u00e9ho h\u0159\u00eddele na volnob\u011bh po dobu 60 a\u017e 90 sekund p\u0159ed za\u0159azen\u00edm pln\u00e9ho zat\u00ed\u017een\u00ed umo\u017e\u0148uje, aby se olej oh\u0159\u00e1l z okoln\u00ed teploty na p\u0159ibli\u017en\u011b -10 \u00b0C \u2013 co\u017e sta\u010d\u00ed ke sn\u00ed\u017een\u00ed viskozity o 40\u2013601 TP3T a vytvo\u0159en\u00ed ochrann\u00e9ho filmu. Tento postup je obzvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00fd pro konfigurace p\u0159evodovek v\u00fdvodov\u00e9ho h\u0159\u00eddele, kde olej mezi bou\u0159kami n\u011bkolik dn\u00ed stoj\u00ed.<\/p>\n

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Technologie t\u011bsn\u011bn\u00ed pro prost\u0159ed\u00ed s mrazem pod bodem mrazu<\/h2>\n

Standardn\u00ed nitrilov\u00e9 (NBR) h\u0159\u00eddelov\u00e9 t\u011bsn\u011bn\u00ed pou\u017e\u00edvan\u00e9 na v\u011bt\u0161in\u011b zem\u011bd\u011blsk\u00e1 p\u0159evodovka<\/strong> Aplikace maj\u00ed jmenovit\u00fd provozn\u00ed rozsah od -30 \u00b0C do +100 \u00b0C. Tato spodn\u00ed hranice se zd\u00e1 b\u00fdt dostate\u010dn\u00e1 pro odkl\u00edzen\u00ed sn\u011bhu, ale jmenovit\u00fd rozsah popisuje teplotu, p\u0159i kter\u00e9 si pry\u017e zachov\u00e1v\u00e1 ur\u010ditou pru\u017enost \u2013 nikoli teplotu, p\u0159i kter\u00e9 \u00fa\u010dinn\u011b t\u011bsn\u00ed pod tlakem a excentricitou h\u0159\u00eddele. V praxi t\u011bsn\u011bn\u00ed NBR za\u010d\u00ednaj\u00ed ztr\u00e1cet p\u0159izp\u016fsobivost povrchu h\u0159\u00eddele p\u0159i teplot\u011b kolem -15 \u00b0C a p\u0159i -25 \u00b0C se st\u00e1vaj\u00ed dostate\u010dn\u011b tuh\u00fdmi, aby vytvo\u0159ily cesty net\u011bsnosti. Tuh\u00fd t\u011bsnic\u00ed b\u0159it nem\u016f\u017ee sledovat drobn\u00e9 v\u00fdchylky h\u0159\u00eddele zp\u016fsoben\u00e9 silami v z\u00e1b\u011bru ozuben\u00fdch kol a mezera, kter\u00e1 se otev\u00edr\u00e1 s ka\u017edou ot\u00e1\u010dkou, umo\u017e\u0148uje oleji prosakovat kolem t\u011bsnic\u00ed plochy.<\/p>\n

\u00da\u010delov\u011b vyroben\u00e9 p\u0159evodovky sn\u011b\u017en\u00fdch pluh\u016f pou\u017e\u00edvaj\u00ed jeden ze dvou t\u011bsnic\u00edch materi\u00e1l\u016f ur\u010den\u00fdch pro n\u00edzk\u00e9 teploty. HNBR (hydrogenovan\u00fd nitril) roz\u0161i\u0159uje efektivn\u00ed rozsah n\u00edzk\u00fdch teplot a\u017e do -40 \u00b0C a z\u00e1rove\u0148 si zachov\u00e1v\u00e1 dobrou kompatibilitu s aditivy do p\u0159evodov\u00fdch olej\u016f EP. FKM (fluoroelastomer \/ Viton) nab\u00edz\u00ed je\u0161t\u011b \u0161ir\u0161\u00ed chemickou odolnost \u2013 d\u016fle\u017eitou p\u0159i styku s vn\u011bj\u0161\u00edm t\u011bsn\u011bn\u00edm posypov\u00e9 soli a rozmrazovac\u00edmi roztoky chloridu v\u00e1penat\u00e9ho \u2013 a\u010dkoli jeho flexibilita za n\u00edzk\u00fdch teplot je podobn\u00e1 standardn\u00edmu NBR, pokud nen\u00ed specifikov\u00e1na varianta n\u00edzkoteplotn\u00ed sm\u011bsi (t\u0159\u00edda GFLT nebo GLT). Optim\u00e1ln\u00edm \u0159e\u0161en\u00edm pro p\u0159evodovky sn\u011b\u017en\u00fdch pluh\u016f pracuj\u00edc\u00ed pod -20 \u00b0C je n\u00edzkoteplotn\u00ed sm\u011bs FKM (s jmenovitou teplotou -40 \u00b0C) s pru\u017einovou podp\u011brou z nerezov\u00e9 oceli pro udr\u017een\u00ed konzistentn\u00edho tlaku na b\u0159it, kdy\u017e pry\u017e v chladu tuhne.<\/p>\n

Krom\u011b samotn\u00e9ho materi\u00e1lu t\u011bsn\u011bn\u00ed h\u0159\u00eddele je vn\u011bj\u0161\u00ed prost\u0159ed\u00ed obklopuj\u00edc\u00ed p\u0159evodovku sn\u011b\u017en\u00e9ho pluhu mnohem agresivn\u011bj\u0161\u00ed ne\u017e typick\u00e9 zem\u011bd\u011blsk\u00e9 podm\u00ednky. Roztoky posypov\u00e9 soli, chloridu ho\u0159e\u010dnat\u00e9ho a chloridu v\u00e1penat\u00e9ho neust\u00e1le st\u0159\u00edkaj\u00ed na sk\u0159\u00ed\u0148 p\u0159evodovky a napadaj\u00ed odkryt\u00e9 z\u00e1vity upev\u0148ovac\u00edch prvk\u016f, odvzdu\u0161\u0148ovac\u00ed otvory a vn\u011bj\u0161\u00ed povrch t\u011bsn\u011bn\u00ed h\u0159\u00eddele. Labyrintov\u00fd neboli odst\u0159ikovac\u00ed krou\u017eek na v\u00fdstupn\u00edm h\u0159\u00eddeli pom\u00e1h\u00e1 odv\u00e1d\u011bt solnou mlhu d\u0159\u00edve, ne\u017e dos\u00e1hne t\u011bsnic\u00ed plochy, a ochrann\u00e1 man\u017eeta nebo pry\u017eov\u00fd m\u011bch p\u0159es spojen\u00ed vstupn\u00edho h\u0159\u00eddele zabra\u0148uje hromad\u011bn\u00ed solanky kolem vstupn\u00edho t\u011bsn\u011bn\u00ed. Tato vn\u011bj\u0161\u00ed ochrann\u00e1 opat\u0159en\u00ed nejsou u zem\u011bd\u011blsk\u00fdch p\u0159evodovek standardn\u00ed a mus\u00ed b\u00fdt specifikov\u00e1na nebo dodate\u010dn\u011b namontov\u00e1na pro pou\u017eit\u00ed ve sn\u011bhu.<\/p>\n

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\"Rozm\u011brov\u00e1<\/div>\n

Rozm\u011brov\u00e1 reference pro standardn\u00ed uchycen\u00ed p\u0159evodovky a konfigurace h\u0159\u00eddel\u00ed sn\u011b\u017en\u00e9ho pluhu<\/p>\n<\/div>\n

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R\u00e1zov\u00e9 zat\u00ed\u017een\u00ed ze zmrzl\u00e9ho materi\u00e1lu a skryt\u00fdch p\u0159ek\u00e1\u017eek<\/h2>\n

Pluhov\u00e1n\u00ed sn\u011bhu generuje r\u00e1zov\u00e1 zat\u00ed\u017een\u00ed, kter\u00e1 se z\u00e1sadn\u011b li\u0161\u00ed od se\u010den\u00ed nebo orby v zem\u011bd\u011blstv\u00ed. Rota\u010dn\u00ed \u0159ezac\u00ed n\u016f\u017e naraz\u00ed na sk\u00e1lu a n\u00e1raz je kr\u00e1tk\u00fd \u2013 jedn\u00e1 se o jednor\u00e1zov\u00fd vysokoenergetick\u00fd jev trvaj\u00edc\u00ed milisekundy. Radlice sn\u011b\u017en\u00e9ho pluhu, kter\u00e1 naraz\u00ed na zamrzl\u00fd sn\u011bhov\u00fd b\u0159eh nebo ledov\u00fd h\u0159eben, vyv\u00edj\u00ed trval\u00e9 tlakov\u00e9 zat\u00ed\u017een\u00ed, kter\u00e9 m\u016f\u017ee p\u0159etrv\u00e1vat n\u011bkolik sekund, zat\u00edmco pluh proch\u00e1z\u00ed p\u0159ek\u00e1\u017ekou rychlost\u00ed vozidla. Tento trval\u00fd stav p\u0159et\u00ed\u017een\u00ed zat\u011b\u017euje p\u0159evodovku jinak: nam\u00edsto prudk\u00e9ho r\u00e1zu, kter\u00fd by ohrozil ohybovou pevnost zub\u016f ozuben\u00e9ho kola, pluh generuje prodlou\u017een\u00fd vysok\u00fd to\u010div\u00fd moment, kter\u00fd zah\u0159\u00edv\u00e1 ozuben\u00fd z\u00e1b\u011br, p\u0159et\u011b\u017euje lo\u017eiska a m\u016f\u017ee zp\u016fsobit tepelnou rozta\u017enost h\u0159\u00eddel\u00ed v r\u00e1mci t\u011bsn\u00fdch toleranc\u00ed p\u0159edp\u011bt\u00ed lo\u017eisek.<\/p>\n

Skryt\u00e9 p\u0159ek\u00e1\u017eky \u2013 zvednut\u00e9 poklopy \u0161achet, okraje obrubn\u00edk\u016f, zmrzl\u00e9 ne\u010distoty, zakopan\u00e9 sloupky plot\u016f \u2013 vytv\u00e1\u0159ej\u00ed nad r\u00e1mec trval\u00e9ho zat\u00ed\u017een\u00ed sn\u011bhem tak\u00e9 n\u00e1hl\u00fd n\u00e1raz. P\u0159evodovka mus\u00ed zvl\u00e1dat oboj\u00ed sou\u010dasn\u011b. Ochrana proti p\u0159et\u00ed\u017een\u00ed je proto nezbytn\u00e1: st\u0159i\u017en\u00fd kol\u00edk nebo kluzn\u00e1 spojka na hnac\u00edm \u00fastroj\u00ed v\u00fdvodov\u00e9ho h\u0159\u00eddele chr\u00e1n\u00ed p\u0159evodovku p\u0159ed katastrofick\u00fdm selh\u00e1n\u00edm zub\u016f p\u0159i velk\u00fdch n\u00e1razech, zat\u00edmco samotn\u00e1 p\u0159evodovka mus\u00ed b\u00fdt navr\u017eena s dostate\u010dnou pevnost\u00ed paty zubu a \u00fanosnost\u00ed, aby absorbovala nep\u0159etr\u017eit\u00e9 n\u00e1razy st\u0159edn\u00ed intenzity, kter\u00e9 jsou sou\u010d\u00e1st\u00ed b\u011b\u017en\u00e9ho provozu p\u0159i odkl\u00edzen\u00ed sn\u011bhu.<\/p>\n

<\/p>\n

\n
\u26a0\ufe0f<\/span><\/p>\n

Dopad zmrzl\u00e9ho \u0159\u00e1dku<\/strong> \u2014 Zhutn\u011bn\u00e9 sn\u011bhov\u00e9 z\u00e1v\u011bje u silnic mohou dos\u00e1hnout hustoty ledu (600\u2013900 kg\/m\u00b3). N\u00e1raz do sn\u011bhov\u00e9 z\u00e1v\u011bje ve vysok\u00e9 rychlosti generuje maxim\u00e1ln\u00ed to\u010div\u00fd moment p\u0159evodovky 3\u20135kr\u00e1t vy\u0161\u0161\u00ed ne\u017e je b\u011b\u017en\u00e9 zat\u00ed\u017een\u00ed pluhu. Sni\u017ete rychlost vozidla, kdy\u017e se bl\u00ed\u017e\u00edte k zhutn\u011bn\u00fdm \u0159\u00e1dk\u016fm.<\/p>\n<\/div>\n

\u26a0\ufe0f<\/span><\/p>\n

Zv\u00fd\u0161en\u00e9 st\u00e1vky v oblasti infrastruktury<\/strong> \u2014 \u0160achty, odvod\u0148ovac\u00ed m\u0159\u00ed\u017ee a zpomalovac\u00ed prahy zasypan\u00e9 sn\u011bhem jsou neviditeln\u00e9. N\u00e1raz radlice v pln\u00e9 rychlosti m\u016f\u017ee okam\u017eit\u011b zlomit st\u0159i\u017en\u00fd \u0161roub nebo, bez st\u0159i\u017en\u00e9ho \u0161roubu, zlomit ko\u0159en zubu ozuben\u00e9ho kola. P\u0159edsez\u00f3nn\u00ed GPS zna\u010den\u00ed zn\u00e1m\u00fdch p\u0159ek\u00e1\u017eek toto riziko sni\u017euje.<\/p>\n<\/div>\n

\u26a0\ufe0f<\/span><\/p>\n

Nahromad\u011bn\u00ed ledov\u00e9 hr\u00e1ze na \u010depeli<\/strong> \u2014 Opakovan\u00e9 \u010d\u00e1ste\u010dn\u00e9 t\u00e1n\u00ed a op\u011btovn\u00e9 zamrz\u00e1n\u00ed vytv\u00e1\u0159\u00ed na lopatk\u00e1ch t\u011b\u017ekou masu ledu, kter\u00e1 naru\u0161uje rovnov\u00e1hu rotoru a zvy\u0161uje zat\u00ed\u017een\u00ed lo\u017eiska. Mezi jednotliv\u00fdmi trasami odstra\u0148te z lopatek nahromad\u011bn\u00fd led.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Materi\u00e1ly pouzdra: Tv\u00e1rn\u00e1 litina vs. lit\u00e1 ocel pro pou\u017eit\u00ed za studena<\/h2>\n

\u0160ed\u00e1 litina \u2013 v\u00fdchoz\u00ed materi\u00e1l pouzder mnoha standardn\u00edch zem\u011bd\u011blsk\u00fdch p\u0159evodovek \u2013 se s klesaj\u00edc\u00ed teplotou st\u00e1v\u00e1 st\u00e1le k\u0159eh\u010d\u00ed. Jej\u00ed teplota p\u0159echodu z tv\u00e1rn\u00e9 do k\u0159ehk\u00e9 struktury (DBTT) nen\u00ed p\u0159esn\u011b definov\u00e1na, proto\u017ee \u0161ed\u00e1 litina m\u00e1 n\u00edzkou tv\u00e1rnost i p\u0159i pokojov\u00e9 teplot\u011b, ale r\u00e1zov\u00e1 hou\u017eevnatost kles\u00e1 m\u011b\u0159iteln\u011b pod -10 \u00b0C. N\u00e1raz kamene nebo obrubn\u00edku, kter\u00fd by p\u0159i 20 \u00b0C pouze prom\u00e1\u010dkl tv\u00e1rnou litinovou sk\u0159\u00ed\u0148, m\u016f\u017ee p\u0159i -25 \u00b0C zlomit \u0161edou litinu, co\u017e by zp\u016fsobilo poprask\u00e1n\u00ed odlitku a uvoln\u011bn\u00ed ve\u0161ker\u00e9ho p\u0159evodov\u00e9ho oleje v jedin\u00e9m okam\u017eiku.<\/p>\n

Sk\u0159\u00edn\u011b p\u0159evodovek sn\u011b\u017en\u00fdch pluh\u016f by m\u011bly b\u00fdt vyrobeny z tv\u00e1rn\u00e9 litiny (tvarov\u00e1 litina \/ tv\u00e1rn\u00e1 litina) nebo lit\u00e9 oceli, kter\u00e9 si zachov\u00e1vaj\u00ed v\u00fdrazn\u011b vy\u0161\u0161\u00ed r\u00e1zovou hou\u017eevnatost i p\u0159i teplot\u00e1ch pod bodem mrazu. Tv\u00e1rn\u00e1 litina (nap\u0159\u00edklad EN-GJS-500-7) nab\u00edz\u00ed dobrou rovnov\u00e1hu mezi obrobitelnost\u00ed, cenou a hou\u017eevnatost\u00ed za n\u00edzk\u00fdch teplot. Lit\u00e1 ocel poskytuje je\u0161t\u011b vy\u0161\u0161\u00ed r\u00e1zovou hou\u017eevnatost, ale je dra\u017e\u0161\u00ed a t\u011b\u017e\u0161\u00ed. Pro v\u011bt\u0161inu aplikac\u00ed sn\u011b\u017en\u00fdch pluh\u016f do 100 HP je tv\u00e1rn\u00e1 litina praktickou volbou. Pro t\u011b\u017ek\u00e9 komun\u00e1ln\u00ed rota\u010dn\u00ed sn\u011b\u017en\u00e9 fr\u00e9zy nad 100 HP pracuj\u00edc\u00ed v extr\u00e9mn\u00edch mrazech (\u221235 \u00b0C a m\u00e9n\u011b) poskytuj\u00ed sk\u0159\u00edn\u011b z lit\u00e9 oceli dodate\u010dnou r\u00e1zovou hou\u017eevnatost, kter\u00e1 ospravedl\u0148uje vy\u0161\u0161\u00ed cenovou p\u0159ir\u00e1\u017eku.<\/p>\n

Ochrana vn\u011bj\u0161\u00ed strany sk\u0159\u00edn\u011b proti korozi je dal\u0161\u00edm \u010dasto p\u0159ehl\u00ed\u017een\u00fdm aspektem v chladn\u00e9m podneb\u00ed. Posypov\u00e1 s\u016fl agresivn\u011b napad\u00e1 nechr\u00e1n\u011bn\u00e9 litinov\u00e9 povrchy. Kvalitn\u00ed p\u0159evodovky sn\u011b\u017en\u00fdch pluh\u016f maj\u00ed sk\u0159\u00edn\u011b s epoxidov\u00fdm nebo pr\u00e1\u0161kov\u00fdm n\u00e1st\u0159ikem, spojovac\u00ed prvky z nerezov\u00e9 oceli (nebo \u0161rouby s pozinkovan\u00fdm povlakem t\u0159\u00eddy 10.9) a ut\u011bsn\u011bn\u00e9 odvzdu\u0161\u0148ovac\u00ed otvory s vn\u011bj\u0161\u00edmi kryty proti st\u0159\u00edkaj\u00edc\u00ed vod\u011b. Sk\u0159\u00ed\u0148, kter\u00e1 po jedn\u00e9 zim\u011b vystaven\u00ed nechr\u00e1n\u011bn\u00e9 soli vypad\u00e1 kosmeticky po\u0161kozen\u00e1, je tak\u00e9 struktur\u00e1ln\u011b oslaben\u00e1 \u2013 povrchov\u00e9 korozn\u00ed d\u016flky vytv\u00e1\u0159ej\u00ed body koncentrace nap\u011bt\u00ed, kter\u00e9 d\u00e1le sni\u017euj\u00ed odolnost proti n\u00e1razu.<\/p>\n

\"V\u00fdroba<\/div>\n

<\/p>\n

P\u0159evodovky pro odkl\u00edzen\u00ed sn\u011bhu s hydraulick\u00fdm pohonem vs. p\u0159evodovky s pohonem v\u00fdvodov\u00e9ho h\u0159\u00eddele<\/h2>\n

Za\u0159\u00edzen\u00ed pro odkl\u00edzen\u00ed sn\u011bhu pou\u017e\u00edv\u00e1 k pohonu p\u0159evodovky dva z\u00e1sadn\u011b odli\u0161n\u00e9 zdroje energie: v\u00fdvodov\u00fd h\u0159\u00eddel traktorov\u00e9ho typu (b\u011b\u017en\u00fd u sn\u011bhov\u00fdch fr\u00e9z nesen\u00fdch na traktoru a t\u0159\u00edbodov\u00fdch rozmetadel) nebo hydraulick\u00fd motor (b\u011b\u017en\u00fd u smykem \u0159\u00edzen\u00fdch naklada\u010d\u016f, pluh\u016f nesen\u00fdch na n\u00e1kladn\u00edch automobilech a sn\u011bhov\u00fdch fr\u00e9z nesen\u00fdch na naklada\u010di). Ka\u017ed\u00fd p\u0159\u00edstup klade na konstrukci p\u0159evodovky jin\u00e9 po\u017eadavky.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
Parametr<\/th>\nP\u0159evodovka poh\u00e1n\u011bn\u00e1 v\u00fdvodov\u00fdm h\u0159\u00eddelem<\/th>\nHydraulicky poh\u00e1n\u011bn\u00e1 p\u0159evodovka<\/th>\n<\/tr>\n<\/thead>\n
Vstupn\u00ed rychlost<\/td>\n540 nebo 1000 ot.\/min (pevn\u011b nastaven\u00e9)<\/td>\nVariabiln\u00ed, nastaven\u00e1 hydraulick\u00fdm pr\u016ftokem<\/td>\n<\/tr>\n
Regulace rychlosti<\/td>\nPevn\u00fd p\u0159evodov\u00fd pom\u011br; ot\u00e1\u010dky nastaven\u00e9 kategori\u00ed v\u00fdvodov\u00e9ho h\u0159\u00eddele<\/td>\nPlynule nastaviteln\u00e9 pomoc\u00ed regula\u010dn\u00edho ventilu pr\u016ftoku<\/td>\n<\/tr>\n
Ochrana proti p\u0159et\u00ed\u017een\u00ed<\/td>\nSt\u0159i\u017en\u00fd \u0161roub nebo kluzn\u00e1 spojka na hnac\u00edm \u00fastroj\u00ed<\/td>\nHydraulick\u00fd p\u0159etlakov\u00fd ventil (vestav\u011bn\u00fd)<\/td>\n<\/tr>\n
Probl\u00e9m se studen\u00fdm startem<\/td>\nViskozita p\u0159evodov\u00e9ho oleje v p\u0159evodovce<\/td>\nViskozita hydraulick\u00e9 kapaliny v cel\u00e9m okruhu + p\u0159evodov\u00fd olej<\/td>\n<\/tr>\n
Typick\u00e1 aplikace<\/td>\nZadn\u00ed fukar montovan\u00fd na traktor, rozmetadlo 3PH<\/td>\nfukar pro smykem \u0159\u00edzen\u00e9 naklada\u010de, pluh pro n\u00e1kladn\u00ed automobily, p\u0159\u00edslu\u0161enstv\u00ed pro naklada\u010d<\/td>\n<\/tr>\n
\u00da\u010dinnost<\/td>\n95\u201397% (mechanick\u00fd z\u00e1b\u011br ozuben\u00fdch kol)<\/td>\n70\u201385% (hydraulick\u00e9 ztr\u00e1ty + z\u00e1b\u011br ozuben\u00fdch kol)<\/td>\n<\/tr>\n
Rozsah HP<\/td>\n25\u2013200 kon\u00ed<\/td>\nEkvivalent 15\u2013120 HP<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Syst\u00e9my poh\u00e1n\u011bn\u00e9 v\u00fdvodov\u00fdm h\u0159\u00eddelem poskytuj\u00ed vy\u0161\u0161\u00ed \u00fa\u010dinnost a jsou preferov\u00e1ny pro rota\u010dn\u00ed sn\u011bhov\u00e9 fr\u00e9zy s vysok\u00fdm v\u00fdkonem, kter\u00e9 vy\u017eaduj\u00ed maxim\u00e1ln\u00ed p\u0159enos v\u00fdkonu \u2013 nap\u0159\u00edklad dvoustup\u0148ov\u00e9 sn\u011bhov\u00e9 fr\u00e9zy s v\u00fdkonem 80 a v\u00edce kon\u00ed t\u00e9m\u011b\u0159 v\u017edy pou\u017e\u00edvaj\u00ed pohon v\u00fdvodov\u00fdm h\u0159\u00eddelem, proto\u017ee ztr\u00e1ta hydraulick\u00e9 \u00fa\u010dinnosti modelu 15\u201330% by pro dosa\u017een\u00ed stejn\u00e9ho foukac\u00edho v\u00fdkonu vy\u017eadovala v\u00fdrazn\u011b v\u011bt\u0161\u00ed hlavn\u00ed pohon. Hydraulick\u00fd pohon nab\u00edz\u00ed prom\u011bnnou regulaci ot\u00e1\u010dek a vestav\u011bnou ochranu proti p\u0159et\u00ed\u017een\u00ed prost\u0159ednictv\u00edm hydraulick\u00e9ho pojistn\u00e9ho ventilu, d\u00edky \u010demu\u017e je vhodn\u011bj\u0161\u00ed pro p\u0159\u00edslu\u0161enstv\u00ed, kter\u00e9 mus\u00ed pracovat s r\u016fzn\u00fdmi rychlostmi nebo kter\u00e9 se montuje na stroje bez v\u00fdstupu v\u00fdvodov\u00e9ho h\u0159\u00eddele.<\/p>\n

Hybridn\u00ed p\u0159\u00edstup pou\u017e\u00edvan\u00fd u n\u011bkter\u00fdch pr\u00e9miov\u00fdch dmychadel montovan\u00fdch na n\u00e1kladn\u00ed automobily kombinuje V\u00fdvodov\u00fd h\u0159\u00eddel<\/a> z p\u0159evodovky n\u00e1kladn\u00edho vozu poh\u00e1n\u011bj\u00edc\u00ed mechanickou p\u0159evodovku pro \u0161nekov\u00fd dopravn\u00edk a ob\u011b\u017en\u00e9 kolo, se samostatn\u00fdm hydraulick\u00fdm okruhem pro ot\u00e1\u010den\u00ed skluzu a polohov\u00e1n\u00ed krytu deflektoru. Toto uspo\u0159\u00e1d\u00e1n\u00ed poskytuje maxim\u00e1ln\u00ed foukac\u00ed v\u00fdkon prost\u0159ednictv\u00edm efektivn\u00ed mechanick\u00e9 dr\u00e1hy, zat\u00edmco hydraulika se pou\u017e\u00edv\u00e1 pouze pro n\u00edzkop\u0159\u00edkonov\u00e9 polohovac\u00ed funkce, kde je d\u016fle\u017eit\u00e1 regulace prom\u011bnn\u00fdch ot\u00e1\u010dek a ztr\u00e1ta \u00fa\u010dinnosti je zanedbateln\u00e1.<\/p>\n

<\/p>\n

Protokoly \u00fadr\u017eby pro sn\u011bhovou povinnost v soln\u00e9m prost\u0159ed\u00ed<\/h2>\n

P\u0159evodovky sn\u011b\u017en\u00fdch pluh\u016f vy\u017eaduj\u00ed \u00fadr\u017ebu p\u0159izp\u016fsobenou jejich jedine\u010dn\u00e9 kombinaci n\u00edzk\u00fdch teplot, p\u0159eru\u0161ovan\u00fdch pracovn\u00edch cykl\u016f a extr\u00e9mn\u00edho vystaven\u00ed vn\u011bj\u0161\u00ed korozi. Standardn\u00ed \u00fadr\u017eba zem\u011bd\u011blsk\u00fdch p\u0159evodovek<\/a> Intervaly pou\u017e\u00edvan\u00e9 pro letn\u00ed n\u00e1\u0159ad\u00ed nejsou pro sn\u011bhov\u00e9 vybaven\u00ed dostate\u010dn\u00e9 \u2013 intervaly by m\u011bly b\u00fdt krat\u0161\u00ed a je nutn\u00e9 prov\u00e9st n\u011bkolik dal\u0161\u00edch kontroln\u00edch bod\u016f.<\/p>\n

<\/p>\n

\n
1<\/span><\/p>\n
\n

P\u0159ed ka\u017edou sn\u011bhovou ud\u00e1lost\u00ed<\/p>\n

Zkontrolujte hladinu oleje pomoc\u00ed pr\u016fzoru nebo m\u011brky. Ov\u011b\u0159te, zda odvzdu\u0161\u0148ovac\u00ed otvor nen\u00ed ledov\u00fd. Zkontrolujte, zda v oblasti t\u011bsn\u011bn\u00ed v\u00fdstupn\u00edho h\u0159\u00eddele nevyt\u00e9k\u00e1 olej, kter\u00fd mohl zmrznout do viditeln\u00e9ho filmu. Ov\u011b\u0159te, zda je st\u0159i\u017en\u00fd \u0161roub (pokud je pou\u017eit) neporu\u0161en\u00fd.<\/p>\n<\/div>\n<\/div>\n

2<\/span><\/p>\n
\n

Ka\u017ed\u00fdch 25 provozn\u00edch hodin<\/p>\n

Zbytky soli z vn\u011bj\u0161\u00ed strany pouzdra omyjte \u010distou vodou. Zkontrolujte v\u0161echny upev\u0148ovac\u00ed prvky, zda nejsou korozivn\u00ed, a v p\u0159\u00edpad\u011b pot\u0159eby je dot\u00e1hn\u011bte. Zkontrolujte napnut\u00ed \u0159emenu (u model\u016f s \u0159emenov\u00fdm pohonem). V\u0161echny vn\u011bj\u0161\u00ed spoje nama\u017ete mazivem NLGI #1 pro n\u00edzk\u00e9 teploty.<\/p>\n<\/div>\n<\/div>\n

3<\/span><\/p>\n
\n

Ka\u017ed\u00fdch 75 provozn\u00edch hodin<\/p>\n

Vypus\u0165te a kompletn\u011b vym\u011b\u0148te p\u0159evodov\u00fd olej. Zkontrolujte vypu\u0161t\u011bn\u00fd olej, zda neobsahuje vodu (ml\u00e9\u010dn\u00fd vzhled) a kovov\u00e9 \u010d\u00e1stice. Pokud je p\u0159\u00edtomna voda, propl\u00e1chn\u011bte sk\u0159\u00ed\u0148 \u010derstv\u00fdm olejem p\u0159ed dopln\u011bn\u00edm. Vym\u011b\u0148te filtra\u010dn\u00ed vlo\u017eku odvzdu\u0161\u0148ovac\u00edho vzduchu.<\/p>\n<\/div>\n<\/div>\n

4<\/span><\/p>\n
\n

Konec sn\u011bhov\u00e9 sez\u00f3ny<\/p>\n

Kompletn\u00ed v\u00fdm\u011bna oleje za \u010derstv\u00fd syntetick\u00fd p\u0159evodov\u00fd olej. D\u016fkladn\u00e9 vn\u011bj\u0161\u00ed umyt\u00ed pro odstran\u011bn\u00ed v\u0161ech zbytk\u016f soli. Zkontrolujte t\u011bsn\u011bn\u00ed, zda nejsou opot\u0159ebovan\u00e1 a ztvrdl\u00e1. Zm\u011b\u0159te v\u016fli ozuben\u00e9ho kola a lo\u017eiska. Naneste antikorozn\u00ed sprej na exponovan\u00e9 povrchy sk\u0159\u00edn\u011b. Skladujte na such\u00e9m a chr\u00e1n\u011bn\u00e9m m\u00edst\u011b s otvorem vstupn\u00edho h\u0159\u00eddele ut\u011bsn\u011bn\u00fdm proti vniknut\u00ed vlhkosti.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

Vnik\u00e1n\u00ed vody je nejz\u00e1ke\u0159n\u011bj\u0161\u00edm probl\u00e9mem \u00fadr\u017eby p\u0159evodovek sn\u011b\u017en\u00fdch pluh\u016f. Ka\u017ed\u00fd tepeln\u00fd cyklus \u2013 od chladn\u00e9ho venkovn\u00edho skladov\u00e1n\u00ed po teplou provozn\u00ed teplotu a zp\u011bt \u2013 vytv\u00e1\u0159\u00ed tlakov\u00fd rozd\u00edl uvnit\u0159 sk\u0159\u00edn\u011b p\u0159evodovky, kter\u00fd nas\u00e1v\u00e1 vlhk\u00fd vzduch odvzdu\u0161\u0148ovac\u00edm otvorem. Tato vlhkost kondenzuje na chladn\u00fdch vnit\u0159n\u00edch povr\u0161\u00edch a m\u00eds\u00ed se s p\u0159evodov\u00fdm olejem. B\u011bhem cel\u00e9 zimn\u00ed sez\u00f3ny m\u016f\u017ee kumulativn\u00ed kontaminace vodou dos\u00e1hnout 2\u201351 TP3T objemu oleje, co\u017e je dostate\u010dn\u00e9 k tomu, aby zp\u016fsobilo rez na zubech ozuben\u00fdch kol, lept\u00e1n\u00ed lo\u017eisek a urychlen\u00e9 vy\u010derp\u00e1n\u00ed aditiv. Pravideln\u00e9 v\u00fdm\u011bny oleje (ka\u017ed\u00fdch 75 hodin nam\u00edsto standardu 100 hodin u letn\u00edho n\u00e1\u0159ad\u00ed) tuto nahromad\u011bnou vlhkost odstra\u0148uj\u00ed d\u0159\u00edve, ne\u017e zp\u016fsob\u00ed trval\u00e9 po\u0161kozen\u00ed.<\/p>\n

<\/p>\n

Specifikace v\u00fdb\u011bru p\u0159evodovek pro sn\u011b\u017en\u00e9 pluhy<\/h2>\n

P\u0159i v\u00fdb\u011bru p\u0159evodovky pro sn\u011b\u017en\u00fd pluh \u2013 a\u0165 u\u017e pro novou konstrukci za\u0159\u00edzen\u00ed nebo jako n\u00e1hradu \u2013 mus\u00ed tyto specifikace p\u0159esn\u011b odpov\u00eddat va\u0161\u00ed aplikaci. Neshoda jak\u00e9hokoli jednotliv\u00e9ho parametru riskuje p\u0159ed\u010dasn\u00e9 selh\u00e1n\u00ed v prost\u0159ed\u00ed, kter\u00e9 neposkytuje prostor pro chyby.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
Parametr<\/th>\nLehk\u00fd pluh<\/th>\nSt\u0159edn\u011b v\u00fdkonn\u00fd dmychadlo<\/th>\nT\u011b\u017ek\u00e1 komun\u00e1ln\u00ed<\/th>\n<\/tr>\n<\/thead>\n
Rozsah HP<\/td>\n15\u201335 kon\u00ed<\/td>\n35\u201380 kon\u00ed<\/td>\n80\u2013200+ kon\u00ed<\/td>\n<\/tr>\n
Typ vstupu<\/td>\nV\u00fdvodov\u00fd h\u0159\u00eddel 540 ot.\/min. nebo hydraulick\u00fd pohon<\/td>\nV\u00fdvodov\u00fd h\u0159\u00eddel 540\/1000 ot.\/min.<\/td>\nV\u00fdvodov\u00fd h\u0159\u00eddel 1000 ot.\/min. nebo v\u00fdvodov\u00fd h\u0159\u00eddel n\u00e1kladn\u00edho vozidla<\/td>\n<\/tr>\n
P\u0159evodov\u00fd pom\u011br<\/td>\n1:1 a\u017e 1:1,5<\/td>\n1:1 a\u017e 1:2<\/td>\n1:1,5 a\u017e 1:3<\/td>\n<\/tr>\n
Materi\u00e1l pouzdra<\/td>\nTv\u00e1rn\u00e1 litina<\/td>\nTv\u00e1rn\u00e1 litina<\/td>\nTv\u00e1rn\u00e1 litina nebo lit\u00e1 ocel<\/td>\n<\/tr>\n
Materi\u00e1l t\u011bsn\u011bn\u00ed<\/td>\nHNBR<\/td>\nN\u00edzkoteplotn\u00ed FKM<\/td>\nN\u00edzkoteplotn\u00ed FKM + odst\u0159ikovac\u00ed prost\u0159edek<\/td>\n<\/tr>\n
Specifikace oleje<\/td>\nSyntetick\u00fd 75W-90 EP<\/td>\nSyntetick\u00fd 75W-90 EP<\/td>\nPln\u011b syntetick\u00fd 75W EP<\/td>\n<\/tr>\n
Minim\u00e1ln\u00ed provozn\u00ed teplota<\/td>\n\u221225 \u00b0C<\/td>\n\u221230 \u00b0C<\/td>\n\u221240 \u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Pokud pot\u0159ebujete pomoc s v\u00fdb\u011brem spr\u00e1vn\u00e9 p\u0159evodovky pro sn\u011b\u017en\u00fd pluh pro v\u00e1\u0161 konkr\u00e9tn\u00ed stroj \u2013 a\u0165 u\u017e se jedn\u00e1 o fr\u00e9zu s v\u00fdvodov\u00fdm h\u0159\u00eddelem namontovanou na traktoru, rota\u010dn\u00ed jednotku namontovanou na n\u00e1kladn\u00edm automobilu nebo p\u0159\u00edslu\u0161enstv\u00ed pro smykem \u0159\u00edzen\u00e9 naklada\u010de \u2013 kontaktujte n\u00e1\u0161 technick\u00fd t\u00fdm<\/a> se zna\u010dkou za\u0159\u00edzen\u00ed, modelem, mont\u00e1\u017en\u00edm sch\u00e9matem a rozsahem provozn\u00edch teplot. P\u0159ed odesl\u00e1n\u00edm porovn\u00e1me rozm\u011bry a ov\u011b\u0159\u00edme kompatibilitu, v\u010detn\u011b ov\u011b\u0159en\u00ed specifikac\u00ed t\u011bsn\u011bn\u00ed a maziva pro pou\u017eit\u00ed za n\u00edzk\u00fdch teplot.<\/p>\n

<\/p>\n

Ukazatele kvality: Co ov\u011b\u0159it p\u0159ed n\u00e1kupem<\/h2>\n

Rozd\u00edl v cen\u011b mezi standardn\u00ed zem\u011bd\u011blskou p\u0159evodovkou upravenou pro sn\u011b\u017en\u00e9 pr\u00e1ce a \u00fa\u010delov\u011b navr\u017eenou p\u0159evodovkou pro sn\u011b\u017en\u00fd pluh je obvykle 20\u201335%. Rozd\u00edl v \u017eivotnosti m\u016f\u017ee b\u00fdt 3\u00d7 nebo v\u00edce. P\u0159i hodnocen\u00ed p\u0159evodovky pro sn\u011b\u017en\u00fd pluh od jak\u00e9hokoli dodavatele ov\u011b\u0159te tyto specifick\u00e9 konstruk\u010dn\u00ed vlastnosti pro chladn\u00e9 po\u010das\u00ed:<\/p>\n

<\/p>\n

\n
\u2705<\/span><\/p>\n

Certifikace materi\u00e1l\u016f pro bydlen\u00ed<\/strong> \u2014 Vy\u017e\u00e1dejte si specifikaci odlitkov\u00e9ho materi\u00e1lu. Tv\u00e1rn\u00e1 litina (minim\u00e1ln\u011b EN-GJS-400-18 nebo EN-GJS-500-7) poskytuje r\u00e1zovou hou\u017eevnatost pot\u0159ebnou pro provoz v chladn\u00e9m po\u010das\u00ed. \u0160ed\u00e1 litina (EN-GJL-250) nen\u00ed vhodn\u00e1 pro teploty pod \u221210 \u00b0C.<\/p>\n<\/div>\n

\u2705<\/span><\/p>\n

Specifikace materi\u00e1lu t\u011bsn\u011bn\u00ed<\/strong> \u2014 Ov\u011b\u0159te, zda je t\u011bsnic\u00ed hmota h\u0159\u00eddele dimenzov\u00e1na na va\u0161i minim\u00e1ln\u00ed provozn\u00ed teplotu, nikoli pouze na obecn\u00fd \u0161t\u00edtek \u201eFKM\u201c. Vy\u017e\u00e1dejte si konkr\u00e9tn\u00ed t\u0159\u00eddu t\u011bsnic\u00ed hmoty a jej\u00ed zdokumentovan\u00fd n\u00edzkoteplotn\u00ed limit.<\/p>\n<\/div>\n

\u2705<\/span><\/p>\n

Ochrana proti korozi<\/strong> \u2014 Ov\u011b\u0159te, zda je vn\u011bj\u0161\u00ed povrch pouzdra opat\u0159en epoxidov\u00fdm nebo pr\u00e1\u0161kov\u00fdm n\u00e1t\u011brem, zda jsou spojovac\u00ed prvky odoln\u00e9 proti korozi a zda je odvzdu\u0161\u0148ovac\u00ed otvor opat\u0159en ochranou proti st\u0159\u00edkaj\u00edc\u00ed vod\u011b nebo ochrann\u00fdm krytem proti soln\u00e9 mlze.<\/p>\n<\/div>\n

\u2705<\/span><\/p>\n

Dokumentace k z\u00e1t\u011b\u017eov\u00e9mu testov\u00e1n\u00ed<\/strong> \u2014 Kvalitn\u00ed v\u00fdrobce testuje ka\u017edou p\u0159evodovku sn\u011b\u017en\u00e9ho pluhu p\u0159ed odesl\u00e1n\u00edm pod zat\u00ed\u017een\u00edm, p\u0159i\u010dem\u017e ov\u011b\u0159uje hladinu hluku, vibrace, n\u00e1r\u016fst teploty a neporu\u0161enost t\u011bsn\u011bn\u00ed. Zodpov\u011bdn\u00fd dodavatel, jako je P\u0159evodovka Ever-Power PTO<\/a> ke ka\u017ed\u00e9 jednotce poskytuje zku\u0161ebn\u00ed dokumentaci, kter\u00e1 potvrzuje, \u017ee konkr\u00e9tn\u00ed p\u0159evodovka, kterou obdr\u017e\u00edte \u2013 nejen jej\u00ed konstrukce \u2013 spl\u0148uje jmenovit\u00e9 v\u00fdkonov\u00e9 specifikace.<\/p>\n<\/div>\n<\/div>\n

\"P\u0159ehled<\/div>\n

<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
\n
\nJak\u00fd p\u0159evodov\u00fd olej bych m\u011bl pou\u017e\u00edt do p\u0159evodovky sn\u011b\u017en\u00e9ho pluhu?+<\/span><\/summary>\n
\n

Pou\u017eijte pln\u011b syntetick\u00fd nebo polosyntetick\u00fd p\u0159evodov\u00fd olej s vysok\u00fdm v\u00fdkonem (EP) se zimn\u00ed viskozitou 75W (75W-90 nebo 75W-80) a bodem tuhnut\u00ed alespo\u0148 o 10 \u00b0C ni\u017e\u0161\u00edm, ne\u017e je nejni\u017e\u0161\u00ed o\u010dek\u00e1van\u00e1 spou\u0161t\u011bc\u00ed teplota. Miner\u00e1ln\u00ed olej 80W-90 je pro studen\u00e9 starty pod -15 \u00b0C p\u0159\u00edli\u0161 hust\u00fd a b\u011bhem prvn\u00edch minut provozu vy\u010derp\u00e1 lo\u017eiska.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nMohu na sn\u011b\u017en\u00e9m pluhu pou\u017e\u00edt standardn\u00ed zem\u011bd\u011blskou p\u0159evodovku?+<\/span><\/summary>\n
\n

Nedoporu\u010duje se. Standardn\u00ed zem\u011bd\u011blsk\u00e9 p\u0159evodovky pou\u017e\u00edvaj\u00ed t\u011bsn\u011bn\u00ed z NBR, kter\u00e1 tvrdnou pod -15 \u00b0C, miner\u00e1ln\u00ed olej, kter\u00fd nadm\u011brn\u011b houstne, a \u010dasto i pouzdra z \u0161ed\u00e9 litiny, kter\u00e1 v chladu k\u0159ehnou. Mo\u017en\u00e1 p\u0159e\u017eijete jednu m\u00edrnou zimu, ale opakovan\u00e9 pou\u017e\u00edv\u00e1n\u00ed p\u0159i teplot\u00e1ch pod bodem mrazu zp\u016fsob\u00ed p\u0159ed\u010dasn\u00e9 selh\u00e1n\u00ed t\u011bsn\u011bn\u00ed, opot\u0159eben\u00ed lo\u017eisek a riziko prasknut\u00ed pouzdra v d\u016fsledku r\u00e1zov\u00e9ho zat\u00ed\u017een\u00ed zmrzl\u00fdm materi\u00e1lem.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nJak \u010dasto bych m\u011bl m\u011bnit olej v p\u0159evodovce sn\u011b\u017en\u00e9ho pluhu?+<\/span><\/summary>\n
\n

Ka\u017ed\u00fdch 75 provozn\u00edch hodin \u2013 25% krat\u0161\u00ed ne\u017e standardn\u00ed 100hodinov\u00fd interval pro letn\u00ed zem\u011bd\u011blsk\u00e9 p\u0159evodovky. Opakovan\u00e9 tepeln\u00e9 cykly ve sn\u011bhov\u00e9m provozu zp\u016fsobuj\u00ed kondenzaci vlhkosti uvnit\u0159 sk\u0159\u00edn\u011b, kter\u00e1 rychleji kontaminuje olej. Pokud p\u0159i jak\u00e9koli kontrole zjist\u00edte ml\u00e9\u010dn\u00fd nebo zakalen\u00fd olej, okam\u017eit\u011b jej vym\u011b\u0148te bez ohledu na provozn\u00ed hodiny.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nCo zp\u016fsobuje praskliny ve sk\u0159\u00edni p\u0159evodovky u sn\u011bhov\u00fdch stroj\u016f?+<\/span><\/summary>\n
\n

Dv\u011b hlavn\u00ed p\u0159\u00ed\u010diny: r\u00e1zov\u00e9 zat\u00ed\u017een\u00ed od n\u00e1razu na zamrzl\u00e9 p\u0159ek\u00e1\u017eky (obrubn\u00edky, \u0161achty, ledov\u00e9 h\u0159ebeny) p\u0159i zapojen\u00ed radlice nebo \u0161neku a n\u00edzkoteplotn\u00ed k\u0159ehnut\u00ed materi\u00e1lu pouzdra. Pouzdra z \u0161ed\u00e9 litiny jsou obzvl\u00e1\u0161t\u011b zraniteln\u00e1 p\u0159i teplot\u00e1ch pod -15 \u00b0C. Pouzdra z tv\u00e1rn\u00e9 litiny nebo ocelolitiny mnohem \u00fa\u010dinn\u011bji odol\u00e1vaj\u00ed n\u00e1raz\u016fm i k\u0159ehnut\u00ed za studena.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nPot\u0159ebuji st\u0159i\u017en\u00fd \u0161roub na sn\u011bhov\u00e9 fr\u00e9ze poh\u00e1n\u011bn\u00e9 v\u00fdvodov\u00fdm h\u0159\u00eddelem?+<\/span><\/summary>\n
\n

Ano \u2013 d\u016frazn\u011b doporu\u010deno. St\u0159i\u017en\u00fd \u0161roub nebo kluzn\u00e1 spojka na hnac\u00edm \u00fastroj\u00ed v\u00fdvodov\u00e9ho h\u0159\u00eddele funguje jako ob\u011btn\u00ed pojistka, kter\u00e1 chr\u00e1n\u00ed ozuben\u00e1 kola a lo\u017eiska p\u0159evodovky p\u0159ed katastrofick\u00fdm p\u0159et\u00ed\u017een\u00edm, kdy\u017e \u0161nek naraz\u00ed na skrytou p\u0159ek\u00e1\u017eku. V\u00fdm\u011bna st\u0159i\u017en\u00e9ho \u0161roubu $2 trv\u00e1 p\u011bt minut; oprava p\u0159evodovky se zlomen\u00fdmi zuby kola trv\u00e1 dny a stoj\u00ed stovkykr\u00e1t v\u00edce.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nJak mohu chr\u00e1nit p\u0159evodovku p\u0159ed koroz\u00ed zp\u016fsobenou posypovou sol\u00ed?+<\/span><\/summary>\n
\n

Po ka\u017ed\u00fdch 25 provozn\u00edch hodin\u00e1ch omyjte vn\u011bj\u0161\u00ed povrch p\u0159evodovky \u010distou vodou, abyste odstranili nahromad\u011bnou s\u016fl. Zkontrolujte, zda je sk\u0159\u00ed\u0148 opat\u0159ena ochrann\u00fdm n\u00e1t\u011brem (epoxidov\u00fdm nebo pr\u00e1\u0161kov\u00fdm n\u00e1t\u011brem) a zda jsou spojovac\u00ed prvky z nerezov\u00e9 oceli nebo zinkov\u00fdmi vlo\u010dkami. Na konci sez\u00f3ny naneste na nepota\u017een\u00e9 povrchy antikorozn\u00ed sprej. B\u011bhem del\u0161\u00edho skladov\u00e1n\u00ed ut\u011bsn\u011bte odvzdu\u0161\u0148ovac\u00ed otvor, abyste zabr\u00e1nili vniknut\u00ed vlhkosti kontaminovan\u00e9 sol\u00ed do sk\u0159\u00edn\u011b.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

<\/p>\n

\n

Jste p\u0159ipraveni naj\u00edt \u0159e\u0161en\u00ed pro va\u0161i p\u0159evodovku s v\u00fdvodov\u00fdm h\u0159\u00eddelem?<\/h2>\n

Od kompaktn\u00edch traktorov\u00fdch fukar\u016f s v\u00fdvodov\u00fdm h\u0159\u00eddelem a\u017e po vysoce v\u00fdkonn\u00e9 komun\u00e1ln\u00ed rota\u010dn\u00ed syst\u00e9my odkl\u00edzen\u00ed sn\u011bhu, zem\u011bd\u011blsk\u00e1 p\u0159evodovka<\/a> \u0158e\u0161en\u00ed navr\u017een\u00e1 pro extr\u00e9mn\u011b n\u00edzk\u00fd v\u00fdkon \u2013 podpo\u0159en\u00e1 v\u00edce ne\u017e 20 lety zku\u0161enost\u00ed s v\u00fdrobou a z\u00e1t\u011b\u017eov\u00fdm testov\u00e1n\u00edm 100% v tov\u00e1rn\u011b na ka\u017ed\u00e9 jednotce.<\/p>\n

Kontaktujte na\u0161e in\u017een\u00fdry<\/a><\/p>\n<\/div>\n

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

Snow Plow Gearbox: Engineering for Sub-Zero Duty The temperature reads \u221225 \u00b0C, forty centimeters of wet snow have fallen overnight, and a municipal plow truck is expected to clear twelve kilometers of road before the morning commute begins. Every component in that plow’s drivetrain must perform flawlessly \u2014 starting with the gearbox that converts engine […]<\/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":[4042],"tags":[],"class_list":["post-1244","post","type-post","status-publish","format-standard","hentry","category-agricultural-gearbox"],"_links":{"self":[{"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/posts\/1244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/comments?post=1244"}],"version-history":[{"count":1,"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/posts\/1244\/revisions"}],"predecessor-version":[{"id":1245,"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/posts\/1244\/revisions\/1245"}],"wp:attachment":[{"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/media?parent=1244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/categories?post=1244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/tags?post=1244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}