{"id":1202,"date":"2026-05-20T03:45:20","date_gmt":"2026-05-20T03:45:20","guid":{"rendered":"https:\/\/pto-gearbox.net\/?p=1202"},"modified":"2026-05-20T03:45:20","modified_gmt":"2026-05-20T03:45:20","slug":"pto-gearbox-for-post-hole-diggers-sizing-torque","status":"publish","type":"post","link":"https:\/\/pto-gearbox.net\/cs\/pto-gearbox-for-post-hole-diggers-sizing-torque\/","title":{"rendered":"PTO Gearbox for Post Hole Diggers: Sizing & Torque"},"content":{"rendered":"
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P\u0159evodovka PTO pro vrt\u00e1ky na sloupky: Dimenzov\u00e1n\u00ed a to\u010div\u00fd moment<\/h1>\n

Dodavatel plot\u016f vrtaj\u00edc\u00ed do kansask\u00e9ho v\u00e1pence \u010del\u00ed z\u00e1sadn\u011b odli\u0161n\u00e9 technick\u00e9 v\u00fdzv\u011b ne\u017e spr\u00e1vce vinice vrtaj\u00edc\u00ed do rozlo\u017een\u00e9 \u017euly v Ji\u017en\u00ed Austr\u00e1lii \u2013 oba v\u0161ak z\u00e1vis\u00ed na stejn\u00e9m kritick\u00e9m komponentu pro p\u0159em\u011bnu v\u00fdkonu v\u00fdvodov\u00e9ho h\u0159\u00eddele traktoru na to\u010div\u00fd moment \u0161neku. V\u00fdb\u011br nespr\u00e1vn\u00e9 p\u0159evodovky pro vrt\u00e1ky na sloupky vede k zablokov\u00e1n\u00ed \u0161nek\u016f, st\u0159i\u017een\u00ed dr\u00e1\u017eek a praskl\u00fdm pouzdr\u016fm ji\u017e v prvn\u00ed sez\u00f3n\u011b pou\u017e\u00edv\u00e1n\u00ed.<\/p>\n

Promluvte si s na\u0161imi odborn\u00edky na p\u0159evodovky<\/a><\/p>\n<\/div>\n<\/div>\n

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Pro\u010d je p\u0159evodovka nejd\u016fle\u017eit\u011bj\u0161\u00ed sou\u010d\u00e1st\u00ed rypadla na sloupy<\/h2>\n

Bagr na sloupov\u00e9 j\u00e1my je mechanicky p\u0159\u00edmo\u010dar\u00fd \u2013 vrt\u00e1k namontovan\u00fd na h\u0159\u00eddeli, spojen\u00fd s p\u0159evodovkou, poh\u00e1n\u011bn\u00fd v\u00fdvodov\u00fdm h\u0159\u00eddelem traktoru prost\u0159ednictv\u00edm hnac\u00edho \u00fastroj\u00ed. Neexistuje \u017e\u00e1dn\u00e9 hydraulick\u00e9 tlumen\u00ed, u v\u011bt\u0161iny ekonomick\u00fdch model\u016f \u017e\u00e1dn\u00e1 kluzn\u00e1 spojka a \u017e\u00e1dn\u00fd setrva\u010dn\u00edk s akumulac\u00ed energie pro vyrovn\u00e1v\u00e1n\u00ed \u0161pi\u010dkov\u00e9ho to\u010div\u00e9ho momentu. Ka\u017ed\u00e1 p\u0159ek\u00e1\u017eka, na kterou se vrt\u00e1k naraz\u00ed \u2013 zakopan\u00fd ko\u0159en, sloj rozpukan\u00e9 horniny, kapsa zhutn\u011bn\u00e9 hl\u00edny \u2013 p\u0159en\u00e1\u0161\u00ed okam\u017eitou reakci to\u010div\u00e9ho momentu p\u0159\u00edmo p\u0159es h\u0159\u00eddel \u0161neku do materi\u00e1lu. p\u0159evodovka pro r\u00fdpadla na sloupky<\/a>.<\/p>\n

D\u00edky tomu je p\u0159evodovka nejzraniteln\u011bj\u0161\u00ed sou\u010d\u00e1st\u00ed syst\u00e9mu. Vrh \u0161neku je vym\u011bniteln\u00fd za m\u00e9n\u011b ne\u017e sto dolar\u016f. Pohonn\u00e9 \u00fastroj\u00ed je standardn\u00ed sestava v\u00fdvodov\u00e9ho h\u0159\u00eddele. Mont\u00e1\u017en\u00ed r\u00e1m je sva\u0159ovan\u00fd z ocelov\u00e9ho plechu. P\u0159evodovka \u2013 obsahuj\u00edc\u00ed p\u0159esn\u011b obroben\u00e1 spir\u00e1lov\u00e1 ku\u017eelov\u00e1 ozuben\u00e1 kola, kalen\u00e9 h\u0159\u00eddele, ku\u017eel\u00edkov\u00e1 lo\u017eiska a t\u011bsn\u011bn\u00ed s p\u0159esnou toleranc\u00ed \u2013 v\u0161ak p\u0159edstavuje v\u011bt\u0161inu v\u00fdrobn\u00edch n\u00e1klad\u016f na stroj a v\u011bt\u0161inu n\u00e1klad\u016f na jeho opravu v p\u0159\u00edpad\u011b selh\u00e1n\u00ed. Oprava praskl\u00e9ho krytu nebo po\u0161kozen\u00e9ho soukol\u00ed obvykle stoj\u00ed v\u00edce ne\u017e oprava \u0161neku, pohonn\u00e9ho \u00fastroj\u00ed a r\u00e1mu dohromady.<\/p>\n

\"P\u0159evodovka<\/p>\n

Pochopen\u00ed spr\u00e1vn\u00e9ho dimenzov\u00e1n\u00ed t\u00e9to p\u0159evodovky \u2013 p\u0159izp\u016fsoben\u00ed p\u0159evodov\u00e9ho pom\u011bru, to\u010div\u00e9ho momentu a konfigurace dr\u00e1\u017eek specifick\u00e9 kombinaci pr\u016fm\u011bru \u0161neku, p\u016fdn\u00edch podm\u00ednek a v\u00fdkonu traktoru \u2013 je rozd\u00edlem mezi vrta\u010dkou, kter\u00e1 vyvrt\u00e1 tis\u00edce d\u011br b\u011bhem n\u011bkolika sez\u00f3n, a takovou, kter\u00e1 katastrof\u00e1ln\u011b sel\u017ee je\u0161t\u011b p\u0159ed dokon\u010den\u00edm prvn\u00ed linie plotu.<\/p>\n

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Mapov\u00e1n\u00ed typu p\u016fdy a kroutic\u00edho momentu: Kvantifikace popt\u00e1vky<\/h2>\n

To\u010div\u00fd moment pot\u0159ebn\u00fd k vyvrt\u00e1n\u00ed otvoru z\u00e1vis\u00ed na t\u0159ech prom\u011bnn\u00fdch, kter\u00e9 na sebe neline\u00e1rn\u011b p\u016fsob\u00ed: pr\u016fm\u011br vrt\u00e1ku, smykov\u00e1 pevnost p\u016fdy a hloubka vrt\u00e1n\u00ed. Zdvojn\u00e1soben\u00ed pr\u016fm\u011bru vrt\u00e1ku neznamen\u00e1 pouze zdvojn\u00e1soben\u00ed po\u017eadavku na to\u010div\u00fd moment \u2013 \u200b\u200bzhruba jej z\u010dty\u0159n\u00e1sob\u00ed, proto\u017ee \u0159ezn\u00e1 plocha se zv\u011bt\u0161uje s druhou mocninou pr\u016fm\u011bru, zat\u00edmco pr\u016fm\u011brn\u00fd polom\u011br, na kter\u00e9m p\u016fsob\u00ed \u0159ezn\u00e1 s\u00edla, se tak\u00e9 line\u00e1rn\u011b zv\u011bt\u0161uje. Vrt\u00e1k o pr\u016fm\u011bru 150 mm (6 palc\u016f) v j\u00edlu m\u016f\u017ee vy\u017eadovat trval\u00fd to\u010div\u00fd moment 250 Nm; vrt\u00e1k o pr\u016fm\u011bru 300 mm (12 palc\u016f) ve stejn\u00e9m j\u00edlu vy\u017eaduje a\u017e 1 000 Nm.<\/p>\n

Smykov\u00e1 pevnost p\u016fdy se v r\u016fzn\u00fdch klasifikac\u00edch p\u016fd enormn\u011b li\u0161\u00ed. Kyp\u0159iv\u00e1 p\u00eds\u010dit\u00e1 p\u016fda klade minim\u00e1ln\u00ed odpor \u2013 \u0161nek se pohybuje pod vahou bagru, kdy\u017e je p\u0159evodovka zat\u00ed\u017eena sotva nad hranic\u00ed t\u0159en\u00ed bez zat\u00ed\u017een\u00ed. Tuh\u00e1 hl\u00edna s obsahem vlhkosti pod 15% m\u016f\u017ee generovat specifick\u00e9 energetick\u00e9 n\u00e1roky 15 a\u017e 25 MJ\/m\u00b3, co\u017e se prom\u00edt\u00e1 do trval\u00fdch to\u010div\u00fdch moment\u016f, kter\u00e9 jsou v\u00fdzvou i pro t\u011b\u017ek\u00e9 p\u0159evodovky. Kamenit\u00e9 p\u016fdy p\u0159id\u00e1vaj\u00ed faktor n\u00e1hodnosti, kter\u00e9mu je t\u00e9m\u011b\u0159 nemo\u017en\u00e9 se zcela vyhnout: dla\u017eebn\u00ed kostka zachycen\u00e1 mezi rameny \u0161neku a st\u011bnou vrtu m\u016f\u017ee generovat \u0161pi\u010dku to\u010div\u00e9ho momentu \u010dty\u0159ikr\u00e1t a\u017e \u0161estkr\u00e1t vy\u0161\u0161\u00ed ne\u017e ust\u00e1len\u00fd to\u010div\u00fd moment p\u0159i vrt\u00e1n\u00ed, kter\u00e1 trv\u00e1 jen milisekundy, ale dostate\u010dn\u011b dlouho na to, aby po\u0161kodila zuby ozuben\u00e9ho kola nebo utrhla pojistku, pokud syst\u00e9m neobsahuje dostate\u010dnou ochranu proti p\u0159et\u00ed\u017een\u00ed.<\/p>\n

Hloubka v\u0161echny tyto \u00fa\u010dinky zesiluje. Jak vrt\u00e1k kles\u00e1, nahromad\u011bn\u00e1 hlu\u0161ina stoupaj\u00edc\u00ed po ramenech vrtu vytv\u00e1\u0159\u00ed dodate\u010dn\u00fd t\u0159ec\u00ed moment proti st\u011bn\u011b vrtu. V hloubk\u00e1ch nad 900 mm (36 palc\u016f) se tato t\u0159ec\u00ed slo\u017eka m\u016f\u017ee rovnat nebo p\u0159ekro\u010dit samotn\u00fd \u0159ezn\u00fd moment, \u010d\u00edm\u017e se efektivn\u011b zdvojn\u00e1sob\u00ed zat\u00ed\u017een\u00ed p\u0159evodovky ve srovn\u00e1n\u00ed s prvn\u00edmi 300 mm vrt\u00e1n\u00ed. Oper\u00e1to\u0159i, kte\u0159\u00ed vrtaj\u00ed hlubok\u00e9 otvory v soudr\u017en\u00fdch zemin\u00e1ch, by m\u011bli cyklicky ot\u00e1\u010det vrt\u00e1kem \u2013 vrtat 300 mm, zvedat hlu\u0161inu a pot\u00e9 vrtat dal\u0161\u00edch 300 mm \u2013 sp\u00ed\u0161e ne\u017e se pokou\u0161et o jeden souvisl\u00fd pr\u016fchod, kter\u00fd maximalizuje hloubkov\u00e9 t\u0159ec\u00ed zat\u00ed\u017een\u00ed p\u0159evodovky.<\/p>\n

\n\n\n\n\n\n\n\n\n
Typ p\u016fdy<\/th>\nTo\u010div\u00fd moment \u0161neku 150 mm<\/th>\nTo\u010div\u00fd moment \u0161neku 225 mm<\/th>\nTo\u010div\u00fd moment \u0161neku 300 mm<\/th>\nDoporu\u010den\u00e1 jmenovit\u00e1 hodnota p\u0159evodovky<\/th>\n<\/tr>\n<\/thead>\n
Sypk\u00fd p\u00edsek \/ hl\u00edna<\/td>\n80\u2013150 Nm<\/td>\n180\u2013340 Nm<\/td>\n350\u2013600 Nm<\/td>\nLehk\u00fd provoz (\u2265800 Nm)<\/td>\n<\/tr>\n
Pevn\u00e1 hl\u00edna<\/td>\n200\u2013350 Nm<\/td>\n450\u2013800 Nm<\/td>\n900\u20131 400 Nm<\/td>\nSt\u0159edn\u00ed zat\u00ed\u017een\u00ed (\u22652 000 Nm)<\/td>\n<\/tr>\n
Tvrd\u00fd j\u00edl \/ b\u0159idlice<\/td>\n350\u2013600 Nm<\/td>\n800\u20131 300 Nm<\/td>\n1 400\u20132 400 Nm<\/td>\nVysoce odoln\u00e9 (\u22653 500 Nm)<\/td>\n<\/tr>\n
Skalnat\u00fd \/ rozl\u00e1man\u00fd k\u00e1men<\/td>\n400\u2013800 Nm + hroty<\/td>\n900\u20131 800 Nm + hroty<\/td>\n1 800\u20133 500 Nm + \u0161pi\u010dky<\/td>\nVysoce odoln\u00e9 se st\u0159i\u017en\u00fdm \u0161roubem (\u22655 000 Nm)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Hodnoty kroutic\u00edho momentu v t\u00e9to tabulce p\u0159edstavuj\u00ed trval\u00e9 kroutic\u00ed momenty p\u0159i vrt\u00e1n\u00ed v hloubce p\u0159ibli\u017en\u011b 600 mm. \u0160pi\u010dkov\u00e9 kroutic\u00ed momenty p\u0159i kontaktu s horninou mohou tyto hodnoty po dobu milisekund p\u0159ekro\u010dit faktorem 3\u00d7 a\u017e 6\u00d7. Jmenovit\u00fd v\u00fdkon p\u0159evodovky mus\u00ed tyto p\u0159echodn\u00e9 \u0161pi\u010dky zvl\u00e1dat bez trval\u00e9 deformace zub\u016f ozuben\u00e9ho kola \u2013 to znamen\u00e1, \u017ee sk\u0159\u00ed\u0148 p\u0159evodovky a soukol\u00ed mus\u00ed b\u00fdt dimenzov\u00e1ny na podstatn\u011b v\u00edce ne\u017e samotn\u00fd trval\u00fd kroutic\u00ed moment.<\/p>\n

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Volba p\u0159evodov\u00e9ho pom\u011bru: Vyva\u017eov\u00e1n\u00ed ot\u00e1\u010dek a to\u010div\u00e9ho momentu<\/h2>\n

P\u0159evodovky bagr\u016f pou\u017e\u00edvaj\u00ed pravo\u00fahl\u00e1 spir\u00e1lov\u00e1 ku\u017eelov\u00e1 ozuben\u00e1 kola k p\u0159esm\u011brov\u00e1n\u00ed horizont\u00e1ln\u00ed osy pohonu v\u00fdvodov\u00e9ho h\u0159\u00eddele o 90 stup\u0148\u016f vzhledem k vertik\u00e1ln\u00ed ose \u0161neku. P\u0159evodov\u00fd pom\u011br zabudovan\u00fd v tomto pravo\u00fahl\u00e9m pohonu ur\u010duje kompromis mezi ot\u00e1\u010dkami \u0161neku a dostupn\u00fdm to\u010div\u00fdm momentem na h\u0159\u00eddeli \u0161neku.<\/p>\n

P\u0159evod 1:1 p\u0159en\u00e1\u0161\u00ed ot\u00e1\u010dky v\u00fdvodov\u00e9ho h\u0159\u00eddele p\u0159\u00edmo na \u0161nekov\u00fd dopravn\u00edk \u2013 540 ot.\/min u standardn\u00edho v\u00fdvodov\u00e9ho h\u0159\u00eddele kategorie I\/II. P\u0159i t\u00e9to rychlosti se \u0161nek v m\u011bkk\u00fdch p\u016fd\u00e1ch rychle pohybuje, co\u017e z p\u0159evodovek 1:1 \u010din\u00ed obl\u00edben\u00e9 pro oplocovatele pracuj\u00edc\u00ed v p\u00eds\u010dit\u00e9 nebo hlinit\u00e9 p\u016fd\u011b, kde je produktivita (po\u010det otvor\u016f za hodinu) d\u016fle\u017eit\u011bj\u0161\u00ed ne\u017e to\u010div\u00fd moment. Vysok\u00e1 rychlost ot\u00e1\u010den\u00ed v\u0161ak generuje vy\u0161\u0161\u00ed odst\u0159ediv\u00e9 s\u00edly na hloubi, kter\u00e9 mohou nepravideln\u011b vymr\u0161\u0165ovat materi\u00e1l z otvoru a zanech\u00e1vat otvor s hrub\u00fdmi st\u011bnami, kter\u00fd vy\u017eaduje v\u00edce betonu k vypln\u011bn\u00ed kolem sloupku.<\/p>\n

Sn\u00ed\u017een\u00e9 p\u0159evodov\u00e9 pom\u011bry \u2013 b\u011b\u017en\u00e9 jsou 2,5:1, 3:1 a 4:1 \u2013 zpomaluj\u00ed \u0161nek a z\u00e1rove\u0148 proporcion\u00e1ln\u011b zn\u00e1sobuj\u00ed to\u010div\u00fd moment. P\u0159evod 3:1 u v\u00fdvodov\u00e9ho h\u0159\u00eddele s 540 ot.\/min. ot\u00e1\u010d\u00ed \u0161nek rychlost\u00ed 180 ot.\/min. a z\u00e1rove\u0148 ztrojn\u00e1sobuje dostupn\u00fd to\u010div\u00fd moment ve srovn\u00e1n\u00ed s v\u00fdstupn\u00edm h\u0159\u00eddelem v\u00fdvodov\u00e9ho h\u0159\u00eddele. Tato pomalej\u0161\u00ed a v\u00fdkonn\u011bj\u0161\u00ed rotace je nezbytn\u00e1 pro vrt\u00e1n\u00ed v j\u00edlu, b\u0159idlici a \u010d\u00e1ste\u010dn\u011b kamenit\u00e9m ter\u00e9nu. Pomalej\u0161\u00ed rotace tak\u00e9 d\u00e1v\u00e1 obsluze v\u00edce \u010dasu na reakci na p\u0159ek\u00e1\u017eky \u2013 p\u0159i 540 ot.\/min. \u0161nek vykon\u00e1 dev\u011bt ot\u00e1\u010dek za sekundu, tak\u017ee prakticky nezb\u00fdv\u00e1 \u010das na vypnut\u00ed v\u00fdvodov\u00e9ho h\u0159\u00eddele, ne\u017e se p\u0159i n\u00e1hl\u00e9m zastaven\u00ed p\u0159eru\u0161\u00ed ozuben\u00ed nebo se zkrout\u00ed h\u0159\u00eddel. V\u00fdvodov\u00fd h\u0159\u00eddel<\/a> hnac\u00ed \u00fastroj\u00ed. P\u0159i 180 ot.\/min (t\u0159i ot\u00e1\u010dky za sekundu) je setrva\u010dn\u00e1 energie ulo\u017een\u00e1 v rota\u010dn\u00edm syst\u00e9mu ni\u017e\u0161\u00ed a obsluha m\u00e1 znateln\u011b del\u0161\u00ed reak\u010dn\u00ed \u010das.<\/p>\n

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\u2699\ufe0f Stru\u010dn\u00fd p\u0159ehled v\u00fdb\u011bru pom\u011bru<\/p>\n

Pom\u011br 1:1 (v\u00fdstup 540 ot.\/min):<\/strong> P\u00edsek, lehk\u00e1 hl\u00edna, pob\u0159e\u017en\u00ed p\u016fdy. Pr\u016fm\u011br \u0161neku a\u017e 200 mm. Up\u0159ednost\u0148uje rychlost p\u0159ed to\u010div\u00fdm momentem. Nedoporu\u010duje se pro j\u00edlovit\u00e9 nebo skalnat\u00e9 podm\u00ednky.<\/p>\n

Pom\u011br 2,5:1 (v\u00fdstup 216 ot.\/min):<\/strong> Pevn\u00e1 hl\u00edna, st\u0159edn\u011b j\u00edlovit\u00e1 p\u016fda, sm\u00ed\u0161en\u00e9 p\u016fdy. Pr\u016fm\u011br \u0161neku 200 a\u017e 300 mm. Dobr\u00e1 univerz\u00e1ln\u00ed volba pro pr\u00e1ci ve sm\u00ed\u0161en\u00e9m ter\u00e9nu.<\/p>\n

P\u0159evodov\u00fd pom\u011br 3:1 (v\u00fdstup 180 ot.\/min):<\/strong> T\u011b\u017ek\u00fd j\u00edl, zv\u011btral\u00e1 hornina, kali\u0161. Pr\u016fm\u011bry vrt\u00e1k\u016f 250 a\u017e 350 mm. Standardn\u00ed doporu\u010den\u00ed pro profesion\u00e1ln\u00ed dodavatele plot\u016f.<\/p>\n

P\u0159evodov\u00fd pom\u011br 4:1 (v\u00fdstup 135 ot.\/min):<\/strong> Hust\u00e1 b\u0159idlice, \u010d\u00e1ste\u010dn\u011b stmelen\u00fd zem, vrt\u00e1n\u00ed o velk\u00e9m pr\u016fm\u011bru (350 a\u017e 600 mm). Maxim\u00e1ln\u00ed to\u010div\u00fd moment; \u010dasto v kombinaci s vrt\u00e1ky s horninov\u00fdmi zuby a hydraulick\u00fdm p\u0159\u00edtlakem.<\/p>\n<\/div>\n

<\/p>\n

V\u00fdb\u011br spline: Rozhran\u00ed 6-spline, 20-spline a 21-spline<\/h2>\n

Dr\u00e1\u017ekovan\u00e9 spojen\u00ed mezi \u010depem v\u00fdvodov\u00e9ho h\u0159\u00eddele traktoru a vstupn\u00edm h\u0159\u00eddelem p\u0159evodovky je rozhran\u00edm pro p\u0159enos kroutic\u00edho momentu, kter\u00e9 mus\u00ed odolat ve\u0161ker\u00e9mu zat\u00ed\u017een\u00ed, kter\u00e9 syst\u00e9m generuje \u2013 v\u010detn\u011b nejprud\u0161\u00edch n\u00e1hl\u00fdch zastaven\u00ed. Specifikace dr\u00e1\u017ekov\u00e1n\u00ed p\u0159evodovek bagr\u016f se \u0159\u00edd\u00ed normami \u0159ady ISO 500 (konkr\u00e9tn\u011b normou ISO 500-1 pro rozm\u011bry v\u00fdvodov\u00e9ho h\u0159\u00eddele), kter\u00e1 definuje t\u0159i hlavn\u00ed konfigurace pou\u017e\u00edvan\u00e9 po cel\u00e9m sv\u011bt\u011b.<\/p>\n

6dr\u00e1\u017ekov\u00e9 rozhran\u00ed o rozm\u011brech 1-3\/8 palce (34,9 mm) je spojov\u00e1no se syst\u00e9my v\u00fdvodov\u00e9ho h\u0159\u00eddele s 540 ot.\/min a nach\u00e1z\u00ed se u v\u011bt\u0161iny kompaktn\u00edch a u\u017eitkov\u00fdch traktor\u016f s v\u00fdkonem do 65 kon\u00ed. Ka\u017ed\u00fd dr\u00e1\u017ekovan\u00fd zub je relativn\u011b \u0161irok\u00fd, co\u017e poskytuje velkou kontaktn\u00ed plochu na zub. Vzhledem k tomu, \u017ee v\u0161ak kroutic\u00ed moment rozkl\u00e1d\u00e1 pouze \u0161est zub\u016f, ka\u017ed\u00fd zub nese v\u00fdznamn\u00fd pod\u00edl celkov\u00e9ho zat\u00ed\u017een\u00ed. P\u0159i extr\u00e9mn\u00edch \u0161pi\u010dk\u00e1ch kroutic\u00edho momentu \u2013 ke kter\u00fdm doch\u00e1z\u00ed p\u0159i zaseknut\u00ed vrt\u00e1ku v hornin\u011b \u2013 m\u016f\u017ee smykov\u00e9 nap\u011bt\u00ed na zub p\u0159ekro\u010dit mez kluzu materi\u00e1lu, co\u017e zp\u016fsobuje trvalou deformaci profilu dr\u00e1\u017eky. Tato plastick\u00e1 deformace se projevuje jako \u201ezaoblen\u00ed\u201c dr\u00e1\u017ekovan\u00fdch zub\u016f, kter\u00e9 se s ka\u017ed\u00fdm dal\u0161\u00edm p\u0159et\u00ed\u017een\u00edm postupn\u011b zhor\u0161uje, dokud spojen\u00ed voln\u011b neproklouzne.<\/p>\n

21dr\u00e1\u017ekov\u00e9 rozhran\u00ed 1-3\/8 palce je standardem pro syst\u00e9my v\u00fdvodov\u00e9ho h\u0159\u00eddele s ot\u00e1\u010dkami 1 000 ot.\/min. D\u00edky 21 u\u017e\u0161\u00edm zub\u016fm rozd\u011bluj\u00edc\u00edm to\u010div\u00fd moment kles\u00e1 zat\u00ed\u017een\u00ed na zub zhruba na jednu t\u0159etinu ekvivalentu 6dr\u00e1\u017ekov\u00e9ho spojen\u00ed p\u0159i stejn\u00e9m celkov\u00e9m to\u010div\u00e9m momentu. D\u00edky tomu jsou 21dr\u00e1\u017ekov\u00e1 spojen\u00ed ze sv\u00e9 podstaty odoln\u011bj\u0161\u00ed v\u016f\u010di po\u0161kozen\u00ed p\u0159et\u00ed\u017een\u00edm \u2013 co\u017e je d\u016fle\u017eit\u00e1 v\u00fdhoda pro rypadla pracuj\u00edc\u00ed v kamenit\u00fdch p\u016fd\u00e1ch, kde jsou \u0161pi\u010dky to\u010div\u00e9ho momentu nep\u0159edv\u00eddateln\u00e9 a siln\u00e9. Mnoho t\u011b\u017ek\u00fdch p\u0159evodovek rypadel specifikuje 21dr\u00e1\u017ekov\u00e9 vstupn\u00ed spojen\u00ed i u traktor\u016f, kter\u00e9 tak\u00e9 nab\u00edzej\u00ed 6dr\u00e1\u017ekovou variantu s ot\u00e1\u010dkami 540 ot.\/min, a to pr\u00e1v\u011b kv\u016fli t\u00e9to vylep\u0161en\u00e9 odolnosti v\u016f\u010di p\u0159et\u00ed\u017een\u00ed.<\/p>\n

20dr\u00e1\u017ekov\u00e9 rozhran\u00ed 1-3\/4 palce (44,5 mm) se pou\u017e\u00edv\u00e1 u traktor\u016f s vysok\u00fdm v\u00fdkonem (obvykle nad 100 HP) s v\u00fdvodov\u00fdm h\u0159\u00eddelem s ot\u00e1\u010dkami 1 000 ot.\/min. V\u011bt\u0161\u00ed pr\u016fm\u011br h\u0159\u00eddele a 20dr\u00e1\u017ekovan\u00e9 dr\u00e1\u017ekov\u00e1n\u00ed poskytuj\u00ed nejvy\u0161\u0161\u00ed to\u010div\u00fd moment ze t\u0159\u00ed standard\u016f \u2013 vhodn\u00e9 pro aplikace s vrt\u00e1ky velk\u00e9ho pr\u016fm\u011bru (400 a\u017e 600 mm) poh\u00e1n\u011bn\u00fdmi traktory s v\u00fdkonem 100 a\u017e 200 HP. P\u0159evodovky pro vrt\u00e1n\u00ed otvor\u016f pro sloupy s 20dr\u00e1\u017ekov\u00fdmi vstupn\u00edmi h\u0159\u00eddeli jsou specializovan\u00e9 t\u011b\u017ek\u00e9 jednotky ur\u010den\u00e9 pro komer\u010dn\u00ed vrt\u00e1n\u00ed z\u00e1klad\u016f, instalaci sloup\u016f ve\u0159ejn\u00e9 dopravy a vrt\u00e1n\u00ed konstruk\u010dn\u00edch pil\u00ed\u0159\u016f, sp\u00ed\u0161e ne\u017e pro b\u011b\u017en\u00e9 pr\u00e1ce na plotov\u00fdch sloupc\u00edch.<\/p>\n

\n
\"P\u0159evodovka<\/div>\n

P\u0159evodovka pro rypadlo \u2013 pravo\u00fahl\u00fd spir\u00e1lov\u00fd ku\u017eelov\u00fd pohon s v\u00fdstupn\u00ed h\u0159\u00eddel\u00ed vertik\u00e1ln\u00edho \u0161neku<\/p>\n<\/div>\n

<\/p>\n

Anal\u00fdza p\u0159eru\u0161ovan\u00e9ho pracovn\u00edho cyklu<\/h2>\n

Na rozd\u00edl od p\u0159evodovky rota\u010dn\u00ed fr\u00e9zy nebo kultiv\u00e1toru, kter\u00e1 b\u011b\u017e\u00ed nep\u0159etr\u017eit\u011b cel\u00e9 hodiny, pracuje p\u0159evodovka vrta\u010dky v kr\u00e1tk\u00fdch, vysoce intenzivn\u00edch cyklech: 15 a\u017e 90 sekund vrt\u00e1n\u00ed p\u0159i pln\u00e9m zat\u00ed\u017een\u00ed, n\u00e1sledovan\u00e9 pauzou, zat\u00edmco obsluha p\u0159em\u00edst\u00ed traktor, nastav\u00ed \u0161nek na dal\u0161\u00ed zna\u010dku a znovu zapne v\u00fdvodov\u00fd h\u0159\u00eddel. Typick\u00e1 operace oplocov\u00e1n\u00ed m\u016f\u017ee za pracovn\u00ed den vyvrtat 50 a\u017e 80 d\u011br, p\u0159i\u010dem\u017e ka\u017ed\u00fd cyklus vrt\u00e1n\u00ed trv\u00e1 m\u00e9n\u011b ne\u017e dv\u011b minuty. Celkov\u00e1 doba sepnut\u00ed v\u00fdvodov\u00e9ho h\u0159\u00eddele m\u016f\u017ee b\u00fdt pouze 60 a\u017e 100 minut denn\u011b \u2013 mnohem m\u00e9n\u011b ne\u017e u seka\u010dky nebo lisu na bal\u00edky \u2013 ale intenzita b\u011bhem ka\u017ed\u00e9ho cyklu se bl\u00ed\u017e\u00ed nebo p\u0159ekra\u010duje jmenovitou kapacitu p\u0159evodovky.<\/p>\n

Tento p\u0159eru\u0161ovan\u00fd provozn\u00ed re\u017eim m\u00e1 specifick\u00e9 d\u016fsledky pro konstrukci p\u0159evodovek. Tepeln\u00fd management je m\u00e9n\u011b kritick\u00fd ne\u017e v aplikac\u00edch s nep\u0159etr\u017eit\u00fdm provozem, proto\u017ee p\u0159evodovka se mezi cykly ochlazuje. Teplota oleje p\u0159i b\u011b\u017en\u00e9m provozu s vrt\u00e1n\u00edm po vrt\u00e1n\u00ed z\u0159\u00eddka p\u0159ekro\u010d\u00ed 50 \u00b0C a\u017e 60 \u00b0C, a to i v hork\u00fdch dnech, proto\u017ee kr\u00e1tk\u00e9 provozn\u00ed cykly nikdy neumo\u017en\u00ed olejov\u00e9 hmot\u011b absorbovat dostatek tepla k dosa\u017een\u00ed problematick\u00fdch teplot. To znamen\u00e1, \u017ee v\u00fdb\u011br maziva p\u0159evodovky m\u016f\u017ee up\u0159ednostnit stabilitu viskozity a v\u00fdkon p\u0159i extr\u00e9mn\u00edch tlac\u00edch p\u0159ed tepelnou vodivost\u00ed \u2013 standardn\u00edm doporu\u010den\u00edm je p\u0159evodov\u00fd olej ISO VG 220 EP a vy\u0161\u0161\u00ed viskozita poskytuje lep\u0161\u00ed ochranu p\u0159i vysok\u00fdch to\u010div\u00fdch momentech a n\u00edzk\u00fdch ot\u00e1\u010dk\u00e1ch p\u0159i vrt\u00e1n\u00ed \u0161nekem ne\u017e leh\u010d\u00ed olej.<\/p>\n

Z\u00e1sadn\u00edm probl\u00e9mem je v\u0161ak \u00fanavov\u00e9 zat\u00ed\u017een\u00ed. Ka\u017ed\u00fd vyvrt\u00e1vac\u00ed cyklus vystavuje spir\u00e1lov\u00e1 ku\u017eelov\u00e1 ozuben\u00e1 kola stovk\u00e1m vysoce nam\u00e1han\u00fdch kontakt\u016f zub\u016f p\u0159i \u0161pi\u010dkov\u00e9m zat\u00ed\u017een\u00ed nebo v jeho bl\u00edzkosti. Kumulativn\u00ed \u00fanavov\u00e9 po\u0161kozen\u00ed z 50 a\u017e 80 takov\u00fdch cykl\u016f denn\u011b, po dobu stovek pracovn\u00edch dn\u016f, je to, co nakonec ur\u010duje \u017eivotnost ozuben\u00e9ho kola. Norma Americk\u00e9 asociace v\u00fdrobc\u016f ozuben\u00fdch kol (AGMA) 2001-D04 klasifikuje tento vzorec jako \u201ep\u0159eru\u0161ovan\u00fd t\u011b\u017ek\u00fd provoz\u201c a doporu\u010duje jmenovit\u00e9 kontaktn\u00ed nap\u011bt\u00ed ozuben\u00e9ho kola 15% a\u017e 20% nad vypo\u010d\u00edtan\u00fdm \u0161pi\u010dkov\u00fdm trval\u00fdm nap\u011bt\u00edm, aby byla zaji\u0161t\u011bna dostate\u010dn\u00e1 \u00fanavov\u00e1 \u017eivotnost. P\u0159i specifikaci zem\u011bd\u011blsk\u00e1 p\u0159evodovka<\/a> U vrt\u00e1n\u00ed do otvoru pro sloupky ov\u011b\u0159te, zda jmenovit\u00fd kroutic\u00ed moment od v\u00fdrobce odr\u00e1\u017e\u00ed klasifikaci pro p\u0159eru\u0161ovan\u00fd t\u011b\u017ek\u00fd provoz, nikoli pro trval\u00fd provoz, co\u017e by nadhodnotilo schopnosti p\u0159evodovky pro tento konkr\u00e9tn\u00ed zp\u016fsob pou\u017eit\u00ed.<\/p>\n

\"Typ<\/p>\n

Ochrana proti p\u0159et\u00ed\u017een\u00ed: St\u0159i\u017en\u00e9 \u0161rouby, kluzn\u00e9 spojky a pojistn\u00e9 ventily<\/h2>\n

Bagry na vrt\u00e1n\u00ed sloup\u016f nar\u00e1\u017eej\u00ed na nep\u0159edv\u00eddateln\u00e9 podzemn\u00ed p\u0159ek\u00e1\u017eky, kter\u00e9 mohou generovat okam\u017eit\u00e9 to\u010div\u00e9 momenty t\u0159ikr\u00e1t a\u017e \u0161estkr\u00e1t vy\u0161\u0161\u00ed ne\u017e ust\u00e1len\u00fd to\u010div\u00fd moment p\u0159i vrt\u00e1n\u00ed. Bez n\u011bjak\u00e9 formy ochrany proti p\u0159et\u00ed\u017een\u00ed se tyto hroty p\u0159en\u00e1\u0161ej\u00ed p\u0159\u00edmo p\u0159es ozuben\u00e9 soukol\u00ed, hnac\u00ed \u00fastroj\u00ed v\u00fdvodov\u00e9ho h\u0159\u00eddele a do spojky a p\u0159evodovky v\u00fdvodov\u00e9ho h\u0159\u00eddele traktoru. V\u00fdsledn\u00e9 po\u0161kozen\u00ed m\u016f\u017ee sahat daleko za samotnou p\u0159evodovku \u2013 zlomen\u00e9 kardanov\u00e9 klouby hnac\u00edho \u00fastroj\u00ed, po\u0161kozen\u00e9 lamely spojky v\u00fdvodov\u00e9ho h\u0159\u00eddele a dokonce i praskl\u00e9 sk\u0159\u00edn\u011b p\u0159evodovky traktoru byly vysledov\u00e1ny a\u017e k jedin\u00e9mu prudk\u00e9mu zaseknut\u00ed \u0161neku v bagru na vrt\u00e1n\u00ed sloup\u016f bez ochrany proti p\u0159et\u00ed\u017een\u00ed.<\/p>\n

Nejjednodu\u0161\u0161\u00ed a nejlevn\u011bj\u0161\u00ed ochranou je st\u0159i\u017en\u00fd \u0161roub. Kalen\u00fd \u0161roub kalibrovan\u00e9ho pr\u016fm\u011bru spojuje h\u0159\u00eddel \u0161neku s v\u00fdstupem p\u0159evodovky. Kdy\u017e to\u010div\u00fd moment p\u0159ekro\u010d\u00ed smykovou pevnost \u0161roubu, \u0161roub se zlom\u00ed a odd\u011bl\u00ed \u0161nek od p\u0159evodovky b\u011bhem jedin\u00e9 ot\u00e1\u010dky. P\u0159evodovka, hnac\u00ed \u00fastroj\u00ed a traktor jsou chr\u00e1n\u011bny. Nev\u00fdhodou je provozn\u00ed aspekt: \u200b\u200bv\u00fdm\u011bna st\u0159i\u017en\u00e9ho \u0161roubu na poli trv\u00e1 5 a\u017e 15 minut a pokud je st\u0159ih\u00e1n\u00ed \u010dast\u00e9 (b\u011b\u017en\u00e9 v kamenit\u00e9m ter\u00e9nu), st\u00e1v\u00e1 se to v\u00fdznamnou ztr\u00e1tou produktivity. No\u0161en\u00ed 20 a\u017e 30 n\u00e1hradn\u00edch st\u0159i\u017en\u00fdch \u0161roub\u016f denn\u011b je standardn\u00ed prax\u00ed pro pr\u00e1ci v kamenit\u00e9m ter\u00e9nu.<\/p>\n

Prokluzovac\u00ed spojky poskytuj\u00ed opakovan\u011b pou\u017eitelnou ochranu proti p\u0159et\u00ed\u017een\u00ed. Pru\u017einov\u00e1 sada spojky na v\u00fdstupn\u00edm h\u0159\u00eddeli p\u0159evodovky umo\u017e\u0148uje prokluzov\u00e1n\u00ed pohonu, kdy\u017e to\u010div\u00fd moment p\u0159ekro\u010d\u00ed nastaven\u00ed spojky, a absorbuje tak r\u00e1zy, ani\u017e by do\u0161lo k po\u0161kozen\u00ed jak\u00e9koli sou\u010d\u00e1sti. Jakmile p\u0159ek\u00e1\u017eka pomine, spojka se znovu zapne a vrt\u00e1n\u00ed pokra\u010duje. Nev\u00fdhodou jsou n\u00e1klady (mechanismus prokluzovac\u00ed spojky p\u0159id\u00e1v\u00e1 k cen\u011b p\u0159evodovky 30% a\u017e 50%) a nutnost pravideln\u00e9ho se\u0159izov\u00e1n\u00ed spojky \u2013 t\u0159ec\u00ed kotou\u010de se s ka\u017ed\u00fdm prokluzem opot\u0159ebov\u00e1vaj\u00ed, \u010d\u00edm\u017e se postupn\u011b sni\u017euje z\u00e1b\u011brov\u00fd moment spojky, dokud neza\u010dne prokluzovat i p\u0159i b\u011b\u017en\u00e9m vrt\u00e1n\u00ed, a nikoli pouze p\u0159i p\u0159et\u00ed\u017een\u00ed. Pro udr\u017een\u00ed spr\u00e1vn\u00e9 prahov\u00e9 hodnoty prokluzu je nutn\u00e1 ka\u017edoro\u010dn\u00ed kontrola a se\u0159\u00edzen\u00ed stla\u010den\u00ed pru\u017einy sady spojky.<\/p>\n

Hydraulick\u00e9 bagry s p\u0159etlakov\u00fdmi ventily p\u0159edstavuj\u00ed nejvy\u0161\u0161\u00ed \u00farove\u0148 ochrany. M\u00edsto mechanick\u00e9 p\u0159evodovky poh\u00e1n\u011bj\u00edc\u00ed \u0161nek p\u0159\u00edmo poh\u00e1n\u00ed p\u0159evodovka s v\u00fdvodov\u00fdm h\u0159\u00eddelem hydraulick\u00e9 \u010derpadlo (konfigurace s p\u0159evodovkou se zvy\u0161uj\u00edc\u00edm se po\u010dtem ot\u00e1\u010dek v\u00fdvodov\u00e9ho h\u0159\u00eddele) a hydraulick\u00fd motor na v\u0159etenu \u0161neku je chr\u00e1n\u011bn p\u0159etlakov\u00fdm ventilem syst\u00e9mu, kter\u00fd omezuje maxim\u00e1ln\u00ed tlak \u2013 a tedy i maxim\u00e1ln\u00ed to\u010div\u00fd moment \u2013 \u200b\u200bbez ohledu na z\u00e1va\u017enost ucp\u00e1n\u00ed. P\u0159etlakov\u00fd ventil se okam\u017eit\u011b otev\u0159e, odklon\u00ed tok zp\u011bt do z\u00e1sobn\u00edku a zastav\u00ed \u0161nek b\u011bhem zlomku sekundy. Doba odezvy je milisekundy, rychlej\u0161\u00ed ne\u017e u jak\u00e9hokoli mechanick\u00e9ho ochrann\u00e9ho za\u0159\u00edzen\u00ed. Proto profesion\u00e1ln\u00ed instalat\u00e9\u0159i sloup\u016f elektrick\u00e9ho veden\u00ed a dodavatel\u00e9 konstruk\u010dn\u00edch pil\u00ed\u0159\u016f t\u00e9m\u011b\u0159 univerz\u00e1ln\u011b pou\u017e\u00edvaj\u00ed hydraulick\u00e9 bagry na vrt\u00e1n\u00ed otvor\u016f pro sloupy s velk\u00fdm pr\u016fm\u011brem v nep\u0159edv\u00eddateln\u00e9m ter\u00e9nu.<\/p>\n

\"P\u0159evodovka<\/div>\n

<\/p>\n

Pr\u016fm\u011br \u0161neku vs. kapacita p\u0159evodovky: Pr\u016fvodce dimenzov\u00e1n\u00edm<\/h2>\n

Nej\u010dast\u011bj\u0161\u00ed chybou p\u0159i v\u00fdb\u011bru vrt\u00e1ku na sloupky je p\u0159izp\u016fsoben\u00ed p\u0159evodovky v\u00fdkonu traktoru, ani\u017e by se zohlednil pr\u016fm\u011br vrt\u00e1ku. Traktor s v\u00fdkonem 50 kon\u00ed dok\u00e1\u017ee cel\u00fd den ot\u00e1\u010det vrt\u00e1kem o pr\u016fm\u011bru 150 mm v j\u00edlu, ani\u017e by se p\u0159ibl\u00ed\u017eil limit\u016fm p\u0159evodovky. Pokud v\u0161ak na stejn\u00fd stroj namontujete vrt\u00e1k na sk\u00e1lu o pr\u016fm\u011bru 350 mm, stane se p\u0159\u00ed\u010dinou selh\u00e1n\u00ed p\u0159evodovka \u2013 i kdy\u017e m\u00e1 traktor dostatek v\u00fdkonu k ot\u00e1\u010den\u00ed vrt\u00e1ku, to\u010div\u00fd moment p\u0159evodovky nen\u00ed dostate\u010dn\u00fd pro s\u00edly, kter\u00e9 vrt\u00e1k s velk\u00fdm pr\u016fm\u011brem generuje v odoln\u00e9m materi\u00e1lu.<\/p>\n

Vztah je zhruba kubick\u00fd: po\u017eadavek na to\u010div\u00fd moment se zvy\u0161uje s druhou mocninou pr\u016fm\u011bru \u0161neku (zv\u011bt\u0161en\u00e1 \u0159ezn\u00e1 plocha a polom\u011br \u0159ezu) a line\u00e1rn\u011b s rychlost\u00ed pr\u016fniku (hlub\u0161\u00ed z\u00e1b\u011br na ot\u00e1\u010dku = v\u00edce zeminy p\u0159em\u00edst\u011bn\u00e9 na ot\u00e1\u010dku). \u0160nek o pr\u016fm\u011bru 300 mm ve stejn\u00fdch p\u016fdn\u00edch podm\u00ednk\u00e1ch jako \u0161nek o pr\u016fm\u011bru 150 mm vy\u017eaduje p\u0159ibli\u017en\u011b \u010dty\u0159n\u00e1sobek trval\u00e9ho to\u010div\u00e9ho momentu. Pokud v\u011bt\u0161\u00ed \u0161nek tla\u010d\u00edte tak\u00e9 rychlej\u0161\u00ed rychlost\u00ed pr\u016fniku, abyste udr\u017eeli produktivitu, po\u017eadavek na to\u010div\u00fd moment se d\u00e1le zvy\u0161uje.<\/p>\n

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\ud83d\udd29<\/p>\n

Lehk\u00e1 p\u0159evodovka (\u22641 200 Nm)<\/p>\n

\u0160neky do 200 mm. Traktory 15\u201335 HP. Pouze p\u00eds\u010dit\u00e9 a hlinit\u00e9 p\u016fdy. Lit\u00e1 hlin\u00edkov\u00e1 sk\u0159\u00ed\u0148, 6dr\u00e1\u017ekov\u00fd vstup, p\u0159evodov\u00fd pom\u011br 1:1 a\u017e 2:1. Typick\u00e9 pou\u017eit\u00ed: zahradn\u00ed oplocen\u00ed, sloupky pro vinice v m\u011bkk\u00e9 p\u016fd\u011b, j\u00e1my pro v\u00fdsadbu strom\u016f.<\/p>\n<\/div>\n

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\u2699\ufe0f<\/p>\n

St\u0159edn\u011b t\u011b\u017ek\u00e1 p\u0159evodovka (1 200\u20133 000 Nm)<\/p>\n

\u0160neky 200\u2013300 mm. Traktory 35\u201365 HP. J\u00edlovit\u00e9 a sm\u00ed\u0161en\u00e9 p\u016fdy. Litinov\u00e1 sk\u0159\u00ed\u0148, 6- nebo 21dr\u00e1\u017ekov\u00fd vstup, p\u0159evodov\u00fd pom\u011br 2,5:1 a\u017e 3:1. Typick\u00e9 pou\u017eit\u00ed: zem\u011bd\u011blsk\u00e9 oplocen\u00ed, instalace vinic, sloupky s dopravn\u00edky.<\/p>\n<\/div>\n

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\ud83c\udfd7\ufe0f<\/p>\n

Vysoce odoln\u00e1 p\u0159evodovka (3 000\u20137 000+ Nm)<\/p>\n

\u0160neky 300\u2013600 mm. Traktory 65\u2013200 HP. Sk\u0159\u00ed\u0148ovit\u00fd ter\u00e9n, b\u0159idlice, \u010d\u00e1ste\u010dn\u011b stmelen\u00e9 zeminy. Tv\u00e1rn\u00e1 litinov\u00e1 sk\u0159\u00ed\u0148, 21 nebo 20dr\u00e1\u017ekov\u00fd vstup, p\u0159evodov\u00fd pom\u011br 3:1 a\u017e 4:1. Typick\u00e9 pou\u017eit\u00ed: vrt\u00e1n\u00ed sloup\u016f elektrick\u00e9ho veden\u00ed, vrt\u00e1n\u00ed konstruk\u010dn\u00edch pil\u00ed\u0159\u016f, komer\u010dn\u00ed oplocen\u00ed ve sk\u00e1le.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Konstrukce p\u0159evodovky: Co odli\u0161uje kvalitu od kompromisu<\/h2>\n

Uvnit\u0159 p\u0159evodovky vrtac\u00edho stroje na sloupy jsou kl\u00ed\u010dov\u00fdmi komponenty slad\u011bn\u00e1 sada spir\u00e1lov\u00fdch ku\u017eelov\u00fdch ozuben\u00fdch kol, horizont\u00e1ln\u00ed vstupn\u00ed h\u0159\u00eddel ulo\u017een\u00fd ve dvou ku\u017eel\u00edkov\u00fdch lo\u017eisk\u00e1ch, vertik\u00e1ln\u00ed v\u00fdstupn\u00ed h\u0159\u00eddel ulo\u017een\u00fd ve dvou ku\u017eel\u00edkov\u00fdch lo\u017eisk\u00e1ch a d\u011blen\u00e1 nebo jednod\u00edln\u00e1 sk\u0159\u00ed\u0148, kter\u00e1 obsahuje ozuben\u00fd z\u00e1b\u011br, lo\u017eiska, t\u011bsn\u011bn\u00ed a mazivo. Kvalita ka\u017ed\u00e9 komponenty p\u0159\u00edmo ur\u010duje \u017eivotnost p\u0159evodovky v n\u00e1ro\u010dn\u00e9m cyklu p\u0159eru\u0161ovan\u00e9ho p\u0159et\u00ed\u017een\u00ed p\u0159i vrt\u00e1n\u00ed sloup\u016f.<\/p>\n

M\u00edsto p\u0159\u00edm\u00fdch ku\u017eelov\u00fdch ozuben\u00fdch kol se pou\u017e\u00edvaj\u00ed spir\u00e1lov\u00e1 ku\u017eelov\u00e1 ozuben\u00e1 kola, proto\u017ee zak\u0159iven\u00e1 geometrie zub\u016f umo\u017e\u0148uje postupn\u00fd z\u00e1b\u011br zub\u016f \u2013 ka\u017ed\u00fd zub vstupuje do z\u00e1b\u011bru postupn\u011b po cel\u00e9 \u0161\u00ed\u0159ce sv\u00e9 \u010deln\u00ed plochy, sp\u00ed\u0161e ne\u017e aby narazil najednou. Tento postupn\u00fd z\u00e1b\u011br rozkl\u00e1d\u00e1 r\u00e1zov\u00e9 zat\u00ed\u017een\u00ed na \u0161ir\u0161\u00ed kontaktn\u00ed p\u00e1s, \u010d\u00edm\u017e se sni\u017euje \u0161pi\u010dkov\u00e9 kontaktn\u00ed nap\u011bt\u00ed o 15% a\u017e 25% ve srovn\u00e1n\u00ed s p\u0159\u00edm\u00fdmi ku\u017eelov\u00fdmi ozuben\u00fdmi koly p\u0159i stejn\u00e9m to\u010div\u00e9m momentu. V\u00fdrobn\u00ed n\u00e1klady na spir\u00e1lov\u00e1 ku\u017eelov\u00e1 ozuben\u00e1 kola jsou vy\u0161\u0161\u00ed, proto\u017ee profil zubu vy\u017eaduje specializovan\u00e9 obr\u00e1b\u011bc\u00ed stroje (obvykle gener\u00e1tory Gleason nebo Klingelnberg), ale zlep\u0161en\u00ed odolnosti proti r\u00e1z\u016fm je nezbytn\u00e9 pro aplikace s otvory pro sloupky.<\/p>\n

V\u00fdb\u011br lo\u017eiska odli\u0161uje pr\u00e9miov\u00e9 p\u0159evodovky od levn\u011bj\u0161\u00edch alternativ. Ku\u017eel\u00edkov\u00e1 lo\u017eiska jsou standardem pro aplikace s p\u0159evodovkami PTO, proto\u017ee sou\u010dasn\u011b p\u0159en\u00e1\u0161ej\u00ed radi\u00e1ln\u00ed zat\u00ed\u017een\u00ed (ze sil v z\u00e1b\u011bru ozuben\u00fdch kol) a axi\u00e1ln\u00ed axi\u00e1ln\u00ed zat\u00ed\u017een\u00ed (ze slo\u017eky axi\u00e1ln\u00edho zat\u00ed\u017een\u00ed spir\u00e1lov\u00e9ho ku\u017eelov\u00e9ho kola). Dynamick\u00e1 \u00fanosnost lo\u017eiska \u2013 uveden\u00e1 v katalogu v\u00fdrobce lo\u017eiska \u2013 mus\u00ed p\u0159ekro\u010dit vypo\u010d\u00edtan\u00e9 ekvivalentn\u00ed zat\u00ed\u017een\u00ed lo\u017eiska p\u0159i maxim\u00e1ln\u00edm o\u010dek\u00e1van\u00e9m to\u010div\u00e9m momentu vyn\u00e1soben\u00e9 po\u017eadovan\u00fdm sou\u010dinitelem \u017eivotnosti. U p\u0159evodovek vrtn\u00fdch stroj\u016f s jejich p\u0159eru\u0161ovan\u00fdm re\u017eimem p\u0159et\u00ed\u017een\u00ed by v\u00fdpo\u010dty \u017eivotnosti lo\u017eiska m\u011bly pou\u017e\u00edvat aplika\u010dn\u00ed sou\u010dinitel 2,0 a\u017e 2,5, co\u017e znamen\u00e1, \u017ee dynamick\u00e1 kapacita lo\u017eiska by m\u011bla b\u00fdt alespo\u0148 dvojn\u00e1sobkem vypo\u010d\u00edtan\u00e9ho ust\u00e1len\u00e9ho zat\u00ed\u017een\u00ed, aby byla zaji\u0161t\u011bna dostate\u010dn\u00e1 \u00fanavov\u00e1 \u017eivotnost p\u0159i cyklick\u00e9m \u0161pi\u010dkov\u00e9m zat\u00ed\u017een\u00ed.<\/p>\n

Materi\u00e1l pouzdra ovliv\u0148uje pevnost i opravitelnost. Standardem pro p\u0159evodovky st\u0159edn\u011b t\u011b\u017ek\u00fdch a t\u011b\u017ek\u00fdch vrtac\u00edch stroj\u016f je litina (jakost FCD 450 nebo ekvivalentn\u00ed). Tv\u00e1rn\u00e1 litina dod\u00e1v\u00e1 ocel\u00edm 40% a\u017e 80% v\u011bt\u0161\u00ed odolnost proti n\u00e1razu ve srovn\u00e1n\u00ed se \u0161edou litinou, co\u017e je d\u016fle\u017eit\u00e9, proto\u017ee praskliny v pouzd\u0159e zp\u016fsoben\u00e9 n\u00e1razov\u00fdm p\u0159et\u00ed\u017een\u00edm jsou b\u011b\u017en\u00fdm zp\u016fsobem selh\u00e1n\u00ed \u2013 cel\u00e9 pouzdro se oh\u00fdb\u00e1 p\u0159i extr\u00e9mn\u00edch kroutic\u00edch momentech a n\u00edzk\u00e9 prodlou\u017een\u00ed \u0161ed\u00e9 litiny (pod 1%) znamen\u00e1, \u017ee se sp\u00ed\u0161e prask\u00e1, ne\u017e aby se plasticky deformovala. Tv\u00e1rn\u00e1 litina s prodlou\u017een\u00edm 5% a\u017e 18% v z\u00e1vislosti na jakosti absorbuje stejnou energii m\u00edrnou deformac\u00ed bez prask\u00e1n\u00ed a pot\u00e9 se po uvoln\u011bn\u00ed z\u00e1t\u011b\u017ee vr\u00e1t\u00ed do sv\u00e9ho tvaru. N\u011bkte\u0159\u00ed v\u00fdrobci pou\u017e\u00edvaj\u00ed hlin\u00edkov\u00e1 pouzdra pro lehk\u00e9 p\u0159evodovky, aby se sn\u00ed\u017eila hmotnost \u2013 je to p\u0159ijateln\u00e9 pro aplikace v m\u011bkk\u00fdch p\u016fd\u00e1ch s mal\u00fdmi vrt\u00e1ky, ale nevhodn\u00e9 pro jak\u00e9koli podm\u00ednky zahrnuj\u00edc\u00ed kontakt s horninou.<\/p>\n

\"D\u00edlna<\/p>\n

P\u0159izp\u016fsoben\u00ed p\u0159evodovky kategorii v\u00fdvodov\u00e9ho h\u0159\u00eddele traktoru<\/h2>\n

Norma ISO 500 definuje kategorie v\u00fdvodov\u00fdch h\u0159\u00eddel\u016f na z\u00e1klad\u011b v\u00fdkonov\u00e9 t\u0159\u00eddy traktoru, pr\u016fm\u011bru v\u00fdvodov\u00e9ho h\u0159\u00eddele, konfigurace dr\u00e1\u017eek a ot\u00e1\u010dek. Spr\u00e1vn\u00e9 slad\u011bn\u00ed p\u0159evodovky rypadla s kategori\u00ed v\u00fdvodov\u00e9ho h\u0159\u00eddele traktoru zaji\u0161\u0165uje mechanickou kompatibilitu a zabra\u0148uje p\u0159et\u00ed\u017een\u00ed hnac\u00edho \u00fastroj\u00ed.<\/p>\n

Traktory kategorie I (15 a\u017e 35 HP) pou\u017e\u00edvaj\u00ed v\u00fdvodov\u00fd h\u0159\u00eddel s 540 ot.\/min. a 6dr\u00e1\u017ekov\u00fdm \u010depem o rozm\u011bru 1-3\/8 palce. Jedn\u00e1 se o nejleh\u010d\u00ed t\u0159\u00eddu v\u00fdvodov\u00fdch h\u0159\u00eddel\u00ed, kter\u00e1 je v kombinaci s lehk\u00fdmi p\u0159evodovkami pro vrtn\u00e9 rypadla poh\u00e1n\u011bna vrt\u00e1ky do hloubky 200 mm v m\u011bkk\u00e9m ter\u00e9nu. To\u010div\u00fd moment v\u00fdvodov\u00e9ho h\u0159\u00eddele v t\u00e9to v\u00fdkonov\u00e9 a ot\u00e1\u010dkov\u00e9 t\u0159\u00edd\u011b je p\u0159ibli\u017en\u011b 390 a\u017e 460 Nm \u2013 co\u017e je dob\u0159e slad\u011bno s p\u0159evodovkou s p\u0159evodov\u00fdm pom\u011brem 1:1 nebo 2:1, kter\u00e1 poh\u00e1n\u00ed mal\u00fd vrt\u00e1k v nen\u00e1ro\u010dn\u00e9 p\u016fd\u011b.<\/p>\n

Traktory kategorie II (35 a\u017e 75 HP) tak\u00e9 pou\u017e\u00edvaj\u00ed 540 ot.\/min s 6dr\u00e1\u017ekov\u00fdm p\u0159evodem 1-3\/8 palce, ale poskytuj\u00ed podstatn\u011b v\u011bt\u0161\u00ed to\u010div\u00fd moment \u2013 \u200b\u200ba\u017e p\u0159ibli\u017en\u011b 1 000 Nm na \u010depu v\u00fdvodov\u00e9ho h\u0159\u00eddele. Toto je nejb\u011b\u017en\u011bj\u0161\u00ed kategorie pro zem\u011bd\u011blsk\u00e9 operace s vrt\u00e1n\u00edm do otvor\u016f pro sloupky. St\u0159edn\u011b t\u011b\u017ek\u00e1 p\u0159evodovka s p\u0159evodem 2,5:1 a\u017e 3:1 zn\u00e1sobuje tento to\u010div\u00fd moment na 2 500 a\u017e 3 000 Nm na \u0161neku, co\u017e sta\u010d\u00ed pro \u0161neky o pr\u016fm\u011bru 225 a\u017e 300 mm v pevn\u00e9m j\u00edlu.<\/p>\n

Traktory kategorie III a IV (75 a\u017e 200+ HP) nab\u00edzej\u00ed v\u00fdvodov\u00fd h\u0159\u00eddel s ot\u00e1\u010dkami 1 000 ot.\/min. a 21dr\u00e1\u017ekov\u00fdm rozhran\u00edm 1-3\/8 palce nebo 20dr\u00e1\u017ekov\u00fdm rozhran\u00edm 1-3\/4 palce. Vy\u0161\u0161\u00ed ot\u00e1\u010dky v\u00fdvodov\u00e9ho h\u0159\u00eddele p\u0159i stejn\u00e9m v\u00fdkonu znamenaj\u00ed ni\u017e\u0161\u00ed to\u010div\u00fd moment na \u010depu v\u00fdvodov\u00e9ho h\u0159\u00eddele (to\u010div\u00fd moment je p\u0159i konstantn\u00edm v\u00fdkonu nep\u0159\u00edmo \u00fam\u011brn\u00fd ot\u00e1\u010dk\u00e1m), ale p\u0159evodov\u00fd pom\u011br to kompenzuje agresivn\u011bj\u0161\u00edm n\u00e1soben\u00edm to\u010div\u00e9ho momentu. Pom\u011br 4:1 u v\u00fdvodov\u00e9ho h\u0159\u00eddele s ot\u00e1\u010dkami 1 000 ot.\/min. poskytuje 250 ot.\/min. u \u0161neku se \u010dty\u0159n\u00e1sobn\u00fdm vstupn\u00edm to\u010div\u00fdm momentem \u2013 ide\u00e1ln\u00ed pro n\u00e1ro\u010dn\u00e9 komer\u010dn\u00ed vrtac\u00ed operace. Kontakt n\u00e1\u0161 in\u017een\u00fdrsk\u00fd t\u00fdm<\/a> pro konkr\u00e9tn\u00ed doporu\u010den\u00ed ohledn\u011b p\u0159evodovky odpov\u00eddaj\u00edc\u00ed kategorii v\u00fdvodov\u00e9ho h\u0159\u00eddele va\u0161eho traktoru a p\u016fdn\u00edm podm\u00ednk\u00e1m na staveni\u0161ti va\u0161eho projektu.<\/p>\n

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\"Sestava<\/div>\n

Sestava p\u0159evodovky a v\u00fdvodov\u00e9ho h\u0159\u00eddele \u2013 demonstrace p\u0159ipojen\u00ed hnac\u00edho \u00fastroj\u00ed od traktoru k n\u00e1\u0159ad\u00ed<\/p>\n<\/div>\n

<\/p>\n

Z\u00e1kladn\u00ed \u00fadr\u017eba pro dlouhou \u017eivotnost p\u0159evodovky<\/h2>\n

P\u0159evodovky vrtac\u00edch stroj\u016f na v\u00fdkopov\u00e9 rampy akumuluj\u00ed skute\u010dn\u00e9 provozn\u00ed hodiny pomalu \u2013 stroj, kter\u00fd vrt\u00e1 60 d\u011br denn\u011b po dobu 100 pracovn\u00edch dn\u016f v roce, m\u016f\u017ee ro\u010dn\u011b zaznamenat pouze 150 a\u017e 200 hodin se zapnut\u00fdm v\u00fdvodov\u00fdm h\u0159\u00eddelem. Tento n\u00edzk\u00fd po\u010det hodin sv\u00e1d\u00ed obsluhu k zanedb\u00e1v\u00e1n\u00ed \u00fadr\u017eby s p\u0159edpokladem, \u017ee p\u0159evodovka \u201enebyla p\u0159\u00edli\u0161 pou\u017e\u00edv\u00e1na\u201c. Realita je takov\u00e1, \u017ee t\u011bchto 150 hodin bylo str\u00e1veno p\u0159i maxim\u00e1ln\u00edm nebo t\u00e9m\u011b\u0159 maxim\u00e1ln\u00edm to\u010div\u00e9m momentu v pra\u0161n\u00e9m, bl\u00e1tiv\u00e9m a sutinov\u00e9m prost\u0159ed\u00ed a p\u0159evodovka za\u017eila tis\u00edce to\u010div\u00fdch momentov\u00fdch \u0161pi\u010dek zp\u016fsoben\u00fdch podzemn\u00edmi p\u0159ek\u00e1\u017ekami. \u010casov\u00e9 intervaly \u00fadr\u017eby jsou proto u v\u011bt\u0161iny p\u0159evodovek vrtac\u00edch stroj\u016f na v\u00fdkopov\u00e9 rampy vhodn\u011bj\u0161\u00ed ne\u017e hodinov\u00e9 intervaly.<\/p>\n

Vym\u011b\u0148te olej v p\u0159evodovce na za\u010d\u00e1tku ka\u017ed\u00e9 vrtac\u00ed sez\u00f3ny, bez ohledu na nasb\u00edran\u00e9 hodiny. Olej vypus\u0165te, kdy\u017e je tepl\u00fd (ihned po posledn\u00edm pou\u017eit\u00ed v p\u0159edchoz\u00ed sez\u00f3n\u011b nebo po kr\u00e1tk\u00e9m zah\u0159\u00e1t\u00ed stroje), propl\u00e1chn\u011bte sk\u0159\u00ed\u0148 \u010dist\u00fdm olejem a dopl\u0148te \u010derstv\u00fd p\u0159evodov\u00fd olej ISO VG 220 EP na spr\u00e1vnou hladinu. P\u0159epln\u011bn\u00ed je t\u00e9m\u011b\u0159 stejn\u011b \u0161kodliv\u00e9 jako nedostate\u010dn\u00e9: nadm\u011brn\u00fd objem oleje zvy\u0161uje ztr\u00e1ty m\u00edch\u00e1n\u00edm, zvy\u0161uje provozn\u00ed teplotu a m\u016f\u017ee zp\u016fsobit dostate\u010dn\u00fd tlak v sk\u0159\u00edni, kter\u00fd by mohl zp\u016fsobit prasknut\u00ed t\u011bsn\u011bn\u00ed vstupn\u00edho nebo v\u00fdstupn\u00edho h\u0159\u00eddele.<\/p>\n

P\u0159i ka\u017ed\u00e9 v\u00fdm\u011bn\u011b oleje kontrolujte t\u011bsn\u011bn\u00ed v\u00fdstupn\u00edho h\u0159\u00eddele. V\u00fdstupn\u00ed t\u011bsn\u011bn\u00ed u vrt\u00e1ku pracuje v nejhor\u0161\u00edm mo\u017en\u00e9m prost\u0159ed\u00ed \u2013 vertik\u00e1ln\u00ed orientace znamen\u00e1, \u017ee jak\u00fdkoli \u00fanik z t\u011bsn\u011bn\u00ed kape olej p\u0159\u00edmo na h\u0159\u00eddel \u0161neku a do vrtu, kontaminuje zeminu a signalizuje bezprost\u0159edn\u00ed vystaven\u00ed lo\u017eiska ne\u010distot\u00e1m a vlhkosti. V\u00fdm\u011bna t\u011bsn\u011bn\u00ed $5 p\u0159i ro\u010dn\u00ed prohl\u00eddce zabra\u0148uje selh\u00e1n\u00ed lo\u017eiska a p\u0159evodu $500+ uprost\u0159ed sez\u00f3ny.<\/p>\n

Ka\u017edoro\u010dn\u011b kontrolujte v\u016fli zub\u016f ozuben\u00e9ho kola zablokov\u00e1n\u00edm vstupn\u00ed h\u0159\u00eddele a kyvn\u00fdm pohybem v\u00fdstupn\u00ed h\u0159\u00eddele. Nadm\u011brn\u00e1 v\u016fle (v\u011bt\u0161\u00ed ne\u017e maximum specifikovan\u00e9 v\u00fdrobcem, obvykle 0,15 a\u017e 0,30 mm u spir\u00e1lov\u00fdch ku\u017eelov\u00fdch ozuben\u00fdch kol) nazna\u010duje opot\u0159eben\u00ed zub\u016f nebo lo\u017eiska, kter\u00e9 umo\u017enilo otev\u0159en\u00ed z\u00e1b\u011bru ozuben\u00e9ho kola nad konstruk\u010dn\u00ed toleranci. Pokra\u010duj\u00edc\u00ed provoz s nadm\u011brnou v\u016fl\u00ed urychluje d\u016flkovou korozi na povrchu zub\u016f a m\u016f\u017ee v\u00e9st k jejich zlomen\u00ed p\u0159i dal\u0161\u00edm v\u00fdznamn\u00e9m n\u00e1r\u016fstu kroutic\u00edho momentu.<\/p>\n

<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
\n
\nJak\u00fd p\u0159evodov\u00fd pom\u011br pot\u0159ebuji pro vrt\u00e1n\u00ed v kamenit\u00e9m ter\u00e9nu?
\n+<\/span><\/summary>\n
\n

Pro kamenit\u00fd ter\u00e9n se doporu\u010duje pom\u011br 3:1 nebo 4:1. Sn\u00ed\u017een\u00e1 rychlost vrt\u00e1ku (135 a\u017e 180 ot.\/min.) poskytuje v\u00fdrazn\u011b v\u011bt\u0161\u00ed to\u010div\u00fd moment pro pr\u016fnik odoln\u00fdm materi\u00e1lem a pomalej\u0161\u00ed ot\u00e1\u010den\u00ed d\u00e1v\u00e1 vrt\u00e1k\u016fm s kamenn\u00fdmi zuby \u010das na od\u0161t\u00edp\u00e1v\u00e1n\u00ed a drcen\u00ed kamene, sp\u00ed\u0161e ne\u017e na kluz\u00e1n\u00ed po jeho povrchu. Sn\u00ed\u017een\u00fd pom\u011br pou\u017eijte s robustn\u00ed p\u0159evodovkou s jmenovit\u00fdm v\u00fdkonem alespo\u0148 dvojn\u00e1sobku vypo\u010d\u00edtan\u00e9ho trval\u00e9ho to\u010div\u00e9ho momentu, aby se absorbovaly nep\u0159edv\u00eddateln\u00e9 n\u00e1r\u016fsty to\u010div\u00e9ho momentu, kter\u00e9 kameny generuj\u00ed.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nMohu pou\u017e\u00edt \u0161nek o pr\u016fm\u011bru 300 mm na traktoru o v\u00fdkonu 30 HP?
\n+<\/span><\/summary>\n
\n

V p\u00eds\u010dit\u00e9 nebo kypr\u00e9 hlinit\u00e9 p\u016fd\u011b ano \u2013 po\u017eadovan\u00fd to\u010div\u00fd moment je v r\u00e1mci mo\u017enost\u00ed v\u00fdvodov\u00e9ho h\u0159\u00eddele traktoru o v\u00fdkonu 30 HP s p\u0159evodovkou s p\u0159evodov\u00fdm pom\u011brem 3:1. V j\u00edlovit\u00e9 nebo sm\u00ed\u0161en\u00e9 p\u016fd\u011b se traktor pravd\u011bpodobn\u011b zastav\u00ed, kdy\u017e \u0161nekov\u00fd dopravn\u00edk naraz\u00ed v hloubce na pevn\u00fd materi\u00e1l. Pr\u016fm\u011br \u0161nekov\u00e9ho dopravn\u00edku 300 mm je vhodn\u011bj\u0161\u00ed pro traktory s v\u00fdkonem 45 a\u017e 65 HP pro j\u00edlovit\u00e9 podm\u00ednky a 65+ HP pro kamenit\u00fd nebo \u010d\u00e1ste\u010dn\u011b zpevn\u011bn\u00fd ter\u00e9n.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nJak pozn\u00e1m, kdy je pot\u0159eba vym\u011bnit lo\u017eiska p\u0159evodovky?
\n+<\/span><\/summary>\n
\n

Opot\u0159eben\u00ed lo\u017eiska signalizuj\u00ed t\u0159i indik\u00e1tory: zv\u00fd\u0161en\u00e1 v\u016fle ozuben\u00e9ho kola nad r\u00e1mec tolerance v\u00fdrobce (m\u011b\u0159iteln\u00e1 \u00fachylkom\u011brem), drsn\u00fd nebo p\u00edskav\u00fd pocit p\u0159i ru\u010dn\u00edm ot\u00e1\u010den\u00ed v\u00fdstupn\u00edho h\u0159\u00eddele s odpojen\u00fdm v\u00fdvodov\u00fdm h\u0159\u00eddelem a kovov\u00e9 \u010d\u00e1stice viditeln\u00e9 v oleji b\u011bhem b\u011b\u017en\u00e9 v\u00fdm\u011bny oleje. Sly\u0161iteln\u00fd hluk lo\u017eiska \u2013 dun\u011bn\u00ed nebo vr\u010den\u00ed \u2013 obvykle nazna\u010duje, \u017ee lo\u017eisko je ji\u017e za ide\u00e1ln\u00edm bodem v\u00fdm\u011bny a pracuje s povrchov\u00fdm po\u0161kozen\u00edm, kter\u00e9 se bude rychle zhor\u0161ovat.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nVyplat\u00ed se kluzn\u00e1 spojka za ty p\u0159\u00edplatky oproti st\u0159i\u017en\u00fdm \u0161roub\u016fm?
\n+<\/span><\/summary>\n
\n

Pro obsluhu pracuj\u00edc\u00ed p\u0159ev\u00e1\u017en\u011b v m\u011bkk\u00fdch a\u017e st\u0159edn\u011b tvrd\u00fdch p\u016fd\u00e1ch s ob\u010dasn\u00fdm v\u00fdskytem kamen\u016f jsou st\u0159i\u017en\u00e9 \u0161rouby dostate\u010dn\u00e9 a cenov\u011b dostupn\u00e9. Pro dodavatele vrtaj\u00edc\u00ed v kamenit\u00e9m ter\u00e9nu, kde by v\u00fdm\u011bna st\u0159i\u017en\u00fdch \u0161roub\u016f prob\u00edhala n\u011bkolikr\u00e1t denn\u011b, se kluzn\u00e1 spojka zaplat\u00ed b\u011bhem jedn\u00e9 pracovn\u00ed sez\u00f3ny d\u00edky eliminaci prostoj\u016f a sn\u00ed\u017een\u00ed n\u00e1klad\u016f na skladov\u00e1n\u00ed \u0161roub\u016f. Ro\u010dn\u00ed se\u0159\u00edzen\u00ed spojky sice vy\u017eaduje malou \u00fadr\u017ebu, ale zv\u00fd\u0161en\u00ed produktivity v n\u00e1ro\u010dn\u00fdch ter\u00e9nn\u00edch podm\u00ednk\u00e1ch je zna\u010dn\u00e9.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nDo jak\u00e9 hladiny oleje by se m\u011bla p\u0159evodovka naplnit?
\n+<\/span><\/summary>\n
\n

Napl\u0148te olej po \u00farove\u0148 ozna\u010denou kontroln\u00ed z\u00e1tkou na sk\u0159\u00edni p\u0159evodovky \u2013 obvykle se nach\u00e1z\u00ed ve v\u00fd\u0161ce, kde hladina oleje dosahuje st\u0159edu z\u00e1b\u011bru zub\u016f spodn\u00edho ozuben\u00e9ho kola. P\u0159epln\u011bn\u00ed nut\u00ed ozuben\u00e1 kola proch\u00e1zet hlub\u0161\u00ed olejovou l\u00e1zn\u00ed, co\u017e zvy\u0161uje tvorbu tepla a vnit\u0159n\u00ed tlak, kter\u00fd m\u016f\u017ee zp\u016fsobit prasknut\u00ed t\u011bsn\u011bn\u00ed. Nedostate\u010dn\u00e9 napln\u011bn\u00ed zp\u016fsob\u00ed, \u017ee horn\u00ed \u010d\u00e1sti zub\u016f ozuben\u00e9ho kola a lo\u017eisko v\u00fdstupn\u00edho h\u0159\u00eddele nedostanou maz\u00e1n\u00ed rozst\u0159ikem, co\u017e urychluje opot\u0159eben\u00ed. Hladinu oleje kontrolujte s p\u0159evodovkou namontovanou svisle (jak je nainstalov\u00e1na na bagru) a p\u0159i okoln\u00ed teplot\u011b.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nPasuje p\u0159evodovka bagru na sloupky od jedn\u00e9 zna\u010dky na r\u00e1m bagru jin\u00e9 zna\u010dky?
\n+<\/span><\/summary>\n
\n

Mnoho p\u0159evodovek bagr\u016f na sloupky sd\u00edl\u00ed spole\u010dn\u00e9 mont\u00e1\u017en\u00ed sch\u00e9mata \u0161roub\u016f, proto\u017ee se odv\u011btv\u00ed shodlo na mal\u00e9m po\u010dtu standardn\u00edch konstrukc\u00ed r\u00e1m\u016f. Dva nejb\u011b\u017en\u011bj\u0161\u00ed sch\u00e9mata jsou troj\u00faheln\u00edkov\u00fd \u00fachyt se 3 \u0161rouby a \u010dtvercov\u00fd \u00fachyt se 4 \u0161rouby. Pokud se pr\u016fm\u011br rozte\u010dn\u00e9 kru\u017enice \u0161roub\u016f, velikost \u0161roub\u016f a pr\u016fm\u011br v\u00fdstupn\u00edho h\u0159\u00eddele p\u0159evodovky shoduj\u00ed, lze na st\u00e1vaj\u00edc\u00ed r\u00e1m p\u0159i\u0161roubovat n\u00e1hradn\u00ed p\u0159evodovku od jin\u00e9ho v\u00fdrobce. Zkontrolujte tak\u00e9 sm\u011br ot\u00e1\u010den\u00ed vstupn\u00edho h\u0159\u00eddele \u2013 n\u011bkter\u00e9 p\u0159evodovky jsou navr\u017eeny pro ot\u00e1\u010den\u00ed v\u00fdvodov\u00e9ho h\u0159\u00eddele ve sm\u011bru hodinov\u00fdch ru\u010di\u010dek, zat\u00edmco jin\u00e9 proti sm\u011bru hodinov\u00fdch ru\u010di\u010dek a sm\u011br \u0159ez\u00e1n\u00ed \u0161neku se mus\u00ed shodovat.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

<\/p>\n

\n

Pot\u0159ebujete pomoc s v\u00fdb\u011brem p\u0159evodovky pro bagr na sloupky?<\/h2>\n

Od lehk\u00fdch instalac\u00ed zahradn\u00edch sloupk\u016f a\u017e po t\u011b\u017ek\u00e9 komer\u010dn\u00ed vrt\u00e1n\u00ed pil\u00ed\u0159\u016f, n\u00e1\u0161 technick\u00fd t\u00fdm nab\u00edz\u00ed odborn\u00fd v\u00fdb\u011br p\u0159evodovek, konfigurace p\u0159evodov\u00fdch pom\u011br\u016f na m\u00edru a n\u00e1hradn\u00ed d\u00edly OEM s v\u00edce ne\u017e 20 lety zku\u0161enost\u00ed s v\u00fdrobou zem\u011bd\u011blsk\u00fdch p\u0159evodovek.<\/p>\n

Promluvte si s na\u0161imi odborn\u00edky na p\u0159evodovky<\/a><\/p>\n<\/div>\n

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

PTO Gearbox for Post Hole Diggers: Sizing & Torque A fence contractor drilling through Kansas limestone faces a fundamentally different engineering challenge than a vineyard manager boring into decomposed granite in South Australia \u2014 yet both depend on the same critical component to convert tractor PTO power into auger torque. Selecting the wrong gearbox for […]<\/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-1202","post","type-post","status-publish","format-standard","hentry","category-agricultural-gearbox"],"_links":{"self":[{"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/posts\/1202","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=1202"}],"version-history":[{"count":2,"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/posts\/1202\/revisions"}],"predecessor-version":[{"id":1204,"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/posts\/1202\/revisions\/1204"}],"wp:attachment":[{"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/media?parent=1202"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/categories?post=1202"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pto-gearbox.net\/cs\/wp-json\/wp\/v2\/tags?post=1202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}