{"id":1352,"date":"2026-06-25T06:23:06","date_gmt":"2026-06-25T06:23:06","guid":{"rendered":"https:\/\/worm-and-worm-wheel.com\/?p=1352"},"modified":"2026-06-25T06:23:06","modified_gmt":"2026-06-25T06:23:06","slug":"worm-and-worm-wheel-for-belt-conveyor-drives","status":"publish","type":"post","link":"https:\/\/worm-and-worm-wheel.com\/sk\/worm-and-worm-wheel-for-belt-conveyor-drives\/","title":{"rendered":"\u0160nek a z\u00e1vitovkov\u00e9 koleso pre pohony p\u00e1sov\u00fdch dopravn\u00edkov"},"content":{"rendered":"
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Korea Ever-Power \u00b7 Sprievodca aplika\u010dn\u00fdm in\u017einierstvom<\/p>\n

Z\u00e1vitovka a z\u00e1vitovkov\u00e9 koleso pre pohony p\u00e1sov\u00fdch dopravn\u00edkov \u2013 Sprievodca proti sp\u00e4tn\u00e9mu chodu<\/h1>\n

Horizont\u00e1lny dopravn\u00edk potrebuje \u00fa\u010dinnos\u0165. \u0160ikm\u00fd dopravn\u00edk potrebuje ochranu proti sp\u00e4tn\u00e9mu r\u00e1zu. Bod prevr\u00e1tenia sa nach\u00e1dza pri sklone okolo 10 stup\u0148ov \u2013 pod n\u00edm viacstup\u0148ov\u00fd z\u00e1vitovkov\u00fd prevod \u0161etr\u00ed energiu; nad n\u00edm jednostup\u0148ov\u00fd prevod zabra\u0148uje sp\u00e4tn\u00e9mu pohybu za\u0165a\u017een\u00e9ho p\u00e1su vplyvom gravit\u00e1cie, ke\u010f sa motor zastav\u00ed. Nespr\u00e1vne nastavenie prahu vedie bu\u010f k plytvaniu elektrinou, alebo k p\u00e1su pln\u00e9mu materi\u00e1lu vysypan\u00e9mu na v\u00fdrobn\u00fa halu.<\/p>\n

Porozpr\u00e1vajte sa s technikom pohonu dopravn\u00edka \u2192<\/a><\/p>\n<\/div>\n

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R\u00fdchla odpove\u010f<\/div>\n

P\u00e1sov\u00e9 dopravn\u00edky s\u00fa celosvetovo najv\u00e4\u010d\u0161\u00edm segmentom aplik\u00e1ci\u00ed pre p\u00e1ry z\u00e1vitovkov\u00fdch prevodov a predstavuj\u00fa pribli\u017ene 25 a\u017e 30 percent celkov\u00e9ho dopytu po priemyseln\u00fdch z\u00e1vitovkov\u00fdch prevodoch. Rozhodnutie o \u0161pecifik\u00e1cii sa rozde\u013euje pod\u013ea uhla sklonu: horizont\u00e1lne a mierne sklony (0 a\u017e 10 stup\u0148ov) uprednost\u0148uj\u00fa 2- alebo 3-stup\u0148ov\u00e9 p\u00e1ry pre vy\u0161\u0161iu \u00fa\u010dinnos\u0165 (75 a\u017e 88 percent); mierne sklony (10 a\u017e 25 stup\u0148ov) vy\u017eaduj\u00fa p\u00e1ry s jedn\u00fdm stup\u0148om pre samosvorn\u00fa ochranu proti sp\u00e4tn\u00e9mu chodu (\u00fa\u010dinnos\u0165 40 a\u017e 65 percent); strm\u00e9 sklony nad 25 stup\u0148ov vy\u017eaduj\u00fa p\u00e1ry s jedn\u00fdm stup\u0148om a samostatn\u00fa mechanick\u00fa brzdu bez oh\u013eadu na stav samosvornej brzdy. Sp\u00fa\u0161\u0165ac\u00ed kr\u00fatiaci moment na za\u0165a\u017eenom p\u00e1se zvy\u010dajne dosahuje 1,5 a\u017e 2,5-n\u00e1sobok ust\u00e1len\u00e9ho prev\u00e1dzkov\u00e9ho kr\u00fatiaceho momentu a neuplatnenie tohto sp\u00fa\u0161\u0165acieho faktora je naj\u010dastej\u0161ou chybou pri dimenzovan\u00ed p\u00e1rov z\u00e1vitovkov\u00fdch prevodov dopravn\u00edka. \u0160tandardn\u00e9 p\u00e1rovanie materi\u00e1lov je cementovan\u00e1 oce\u013eov\u00e1 z\u00e1vitovka oproti kolesu z fosforov\u00e9ho bronzu; mokr\u00e9 alebo koroz\u00edvne dopravn\u00edky by mali \u0161pecifikova\u0165 alternat\u00edvy z hlin\u00edkov\u00e9ho bronzu alebo nehrdzavej\u00facej ocele.<\/p>\n<\/div>\n

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Pre\u010do s\u00fa p\u00e1sov\u00e9 dopravn\u00edky najv\u00e4\u010d\u0161\u00edm trhom pre p\u00e1ry z\u00e1vitovkov\u00fdch prevodov<\/h2>\n

Tri vlastnosti z\u00e1vitovky a z\u00e1vitovkov\u00e9ho kolesa z nich robia predvolen\u00fa vo\u013ebu pre pohony p\u00e1sov\u00fdch dopravn\u00edkov v r\u00f4znych odvetviach, od logistick\u00fdch centier a\u017e po bansk\u00e9 prev\u00e1dzky.<\/p>\n

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Kompaktn\u00e9 rozlo\u017eenie s 90-stup\u0148ov\u00fdm uhlom<\/div>\n

Motor sa montuje kolmo na hriade\u013e val\u010deka dopravn\u00edka. T\u00fdm sa eliminuje zlo\u017eitos\u0165 sp\u00e1jania a zarovn\u00e1vania radov\u00e9ho pohonu a \u0161etr\u00ed sa 30 a\u017e 50 percent axi\u00e1lnej d\u013a\u017eky za hnac\u00edm val\u010dekom \u2013 \u010do je kritick\u00fd priestor v r\u00e1moch \u010deln\u00fdch koncov dopravn\u00edka.<\/p>\n<\/div>\n

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Vysok\u00fd pomer v jednom stupni<\/div>\n

P\u00e1sov\u00e9 dopravn\u00edky zvy\u010dajne pracuj\u00fa s r\u00fdchlos\u0165ou p\u00e1su 0,3 a\u017e 1,5 m\/s, \u010do vy\u017eaduje ot\u00e1\u010dky v\u00fdstupn\u00e9ho hriade\u013ea 20 a\u017e 80 ot.\/min. pri ot\u00e1\u010dkach motora 1 400 a\u017e 1 800 ot.\/min. Prevodov\u00e9 pomery 20:1 a\u017e 60:1 v jednom stupni z\u00e1vitovkov\u00e9ho prevodu eliminuj\u00fa potrebu dvojstup\u0148ov\u00e9ho \u0161pir\u00e1lov\u00e9ho alebo plan\u00e9tov\u00e9ho usporiadania.<\/p>\n<\/div>\n

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Samosvorn\u00fd syst\u00e9m proti sp\u00e4tn\u00e9mu chodu<\/div>\n

Na \u0161ikm\u00fdch dopravn\u00edkoch by gravita\u010dn\u00e1 zlo\u017eka za\u0165a\u017een\u00e9ho p\u00e1su po zastaven\u00ed motora tla\u010dila p\u00e1s dozadu. Samosvorn\u00fd p\u00e1r z\u00e1vitovky a z\u00e1vitovkov\u00e9ho kolesa tomu zabra\u0148uje bez nutnosti samostatnej brzdy \u2013 \u010d\u00edm sa zni\u017euje po\u010det dielov, n\u00e1klady a \u00fadr\u017eba.<\/p>\n<\/div>\n<\/div>\n

Tieto tri vlastnosti spolu vysvet\u013euj\u00fa, pre\u010do sa z\u00e1vitovkov\u00e9 ozuben\u00e9 koles\u00e1 pred\u00e1vaj\u00fa lep\u0161ie ako v\u0161etky ostatn\u00e9 typy ozuben\u00fdch kolies v dopravn\u00edkov\u00fdch aplik\u00e1ci\u00e1ch. \u0160pir\u00e1lov\u00e9 ozuben\u00e9 koles\u00e1 pon\u00fakaj\u00fa vy\u0161\u0161iu \u00fa\u010dinnos\u0165, ale nem\u00f4\u017eu sa samosvori\u0165. Plan\u00e9tov\u00e9 s\u00fakolesia pon\u00fakaj\u00fa kompaktnos\u0165, ale za vy\u0161\u0161iu cenu a bez 90-stup\u0148ov\u00e9ho usporiadania. Z\u00e1vitovka a z\u00e1vitovkov\u00e9 koleso sa nach\u00e1dzaj\u00fa v strede Vennovho diagramu \u2013 prijate\u013en\u00e1 \u00fa\u010dinnos\u0165, samosvornos\u0165, kompaktn\u00e1 pravouhl\u00e1 kon\u0161trukcia a mierne n\u00e1klady.<\/p>\n

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Rozhodnutie o uhle sklonu \u2013 ke\u010f anti-rollback zmen\u00ed \u0161pecifik\u00e1ciu<\/h2>\n
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Kritickou in\u017einierskou ot\u00e1zkou pre ka\u017ed\u00fa \u0161pecifik\u00e1ciu z\u00e1vitovkov\u00e9ho prevodu dopravn\u00edka je, \u010di aplik\u00e1cia potrebuje ochranu pred sp\u00e4tn\u00fdm chodom. Odpove\u010f z\u00e1vis\u00ed od uhla sklonu p\u00e1su a dopravovan\u00e9ho materi\u00e1lu. Horizont\u00e1lny dopravn\u00edk prepravuj\u00faci automobilov\u00e9 s\u00fa\u010diastky m\u00e1 nulov\u00e9 riziko sp\u00e4tn\u00e9ho chodu. Dopravn\u00edk s 20-stup\u0148ov\u00fdm sklonom prepravuj\u00faci v\u00e1penec m\u00e1 v\u00e1\u017ene riziko sp\u00e4tn\u00e9ho chodu \u2013 za\u0165a\u017een\u00fd p\u00e1s so sklonom 20 stup\u0148ov uklad\u00e1 zna\u010dn\u00fa gravita\u010dn\u00fa potenci\u00e1lnu energiu, ktor\u00e1 ho v momente, ke\u010f sa preru\u0161\u00ed nap\u00e1janie, pohne dozadu.<\/p>\n

V nasleduj\u00facej tabu\u013eke je zn\u00e1zornen\u00fd uhol sklonu pod\u013ea v\u00fdslednej \u0161pecifik\u00e1cie p\u00e1ru z\u00e1vitovkov\u00fdch prevodov. Toto je najd\u00f4le\u017eitej\u0161\u00ed n\u00e1stroj v\u00fdberu pri obstar\u00e1van\u00ed z\u00e1vitovkov\u00fdch prevodov dopravn\u00edka.<\/p>\n<\/div>\n

\"princ\u00edp<\/div>\n<\/div>\n
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Sklon<\/th>\nRiziko vr\u00e1tenia sp\u00e4\u0165<\/th>\nOdpor\u00fa\u010dan\u00e9 za\u010diatky<\/th>\nUhol n\u00e1behu \u03b3<\/th>\n\u00da\u010dinnos\u0165 \u03b7<\/th>\nPotrebn\u00e1 brzda<\/th>\n<\/tr>\n<\/thead>\n
0\u00b0 \u2013 5\u00b0 (horizont\u00e1lne a\u017e mierne)<\/td>\n\u017diadne<\/td>\n2 alebo 3 \u0161tarty<\/td>\n8\u00b0 \u2013 17\u00b0<\/td>\n75 \u2013 88%<\/td>\nNie<\/td>\n<\/tr>\n
5\u00b0 \u2013 10\u00b0 (mierny sklon)<\/td>\nN\u00edzka<\/td>\n2. \u0161tart<\/td>\n8\u00b0 \u2013 12\u00b0<\/td>\n70 \u2013 80%<\/td>\nOdpor\u00fa\u010da sa, ak je materi\u00e1l drobiv\u00fd<\/td>\n<\/tr>\n
10\u00b0 \u2013 18\u00b0 (mierny sklon)<\/td>\nMierne<\/td>\n1 \u0161tart (samosvorn\u00fd)<\/td>\n3\u00b0 \u2013 6\u00b0<\/td>\n45 \u2013 65%<\/td>\nVolite\u013en\u00e9 (geometrick\u00fd z\u00e1mok posta\u010duje)<\/td>\n<\/tr>\n
18\u00b0 \u2013 25\u00b0 (strm\u00fd sklon)<\/td>\nVysok\u00e1<\/td>\n1 \u0161tart (siln\u00e9 samosvorn\u00e9)<\/td>\n2\u00b0 \u2013 4\u00b0<\/td>\n35 \u2013 50%<\/td>\nOdpor\u00fa\u010dan\u00e9 (riziko vibra\u010dn\u00e9ho te\u010denia)<\/td>\n<\/tr>\n
25\u00b0 \u2013 45\u00b0 (ve\u013emi strm\u00e9 \/ vertik\u00e1lne)<\/td>\nKritick\u00fd<\/td>\n1 \u0161tart + q \u2265 14<\/td>\n1\u00b0 \u2013 3\u00b0<\/td>\n30 \u2013 42%<\/td>\nPovinn\u00e9 (samostatn\u00e1 brzda + samosvorn\u00fd mechanizmus)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Prechodov\u00e9 p\u00e1smo medzi 8 a 12 stup\u0148ami sklonu je oblas\u0165ou, kde je rozhodnutie o \u0161pecifik\u00e1cii najviac sporn\u00e9. Pod 8 stup\u0148ami dominuje \u00fa\u010dinnos\u0165 a viacstup\u0148ov\u00e9 p\u00e1ry s\u00fa jednozna\u010dne lep\u0161ie. Nad 12 stup\u0148ami dominuje ochrana proti sp\u00e4tn\u00e9mu pohybu a jednostup\u0148ov\u00e9 p\u00e1ry s\u00fa povinn\u00e9. Medzi 8 a 12 stup\u0148ami z\u00e1vis\u00ed odpove\u010f od dopravovan\u00e9ho materi\u00e1lu \u2013 \u0165a\u017ek\u00e9 sypk\u00e9 materi\u00e1ly (\u0161trk, ruda, obilie) ukladaj\u00fa viac gravita\u010dnej energie na meter p\u00e1su a pos\u00favaj\u00fa prah ni\u017e\u0161ie; \u013eahk\u00e9 polo\u017eky (bal\u00edky, kart\u00f3ny, plastov\u00e9 diely) ukladaj\u00fa menej energie a umo\u017e\u0148uj\u00fa umiestni\u0165 prah vy\u0161\u0161ie.<\/p>\n

Zn\u00ed\u017eenie \u00fa\u010dinnosti pri v\u00fdbere p\u00e1ru s jedn\u00fdm \u0161tartom na horizont\u00e1lnom dopravn\u00edku je zna\u010dn\u00e9. Troj\u0161tartov\u00fd p\u00e1r s \u00fa\u010dinnos\u0165ou 85 percent v porovnan\u00ed s p\u00e1rom s jedn\u00fdm \u0161tartom s \u00fa\u010dinnos\u0165ou 50 percent na rovnakom motore dopravn\u00edka s v\u00fdkonom 5,5 kW nepretr\u017eite plytv\u00e1 pribli\u017ene 1,9 kW \u2013 14 000 kWh ro\u010dne pri 7 500 prev\u00e1dzkov\u00fdch hodin\u00e1ch. Pri k\u00f3rejsk\u00fdch priemyseln\u00fdch sadzb\u00e1ch elektriny to predstavuje pribli\u017ene 1 800 USD ro\u010dne v strate energie na pohon. Stanovenie spr\u00e1vneho po\u010dtu \u0161tartov pre skuto\u010dn\u00fd sklon nie je mal\u00e1 optimaliz\u00e1cia; je to v\u00fdznamn\u00e9 rozhodnutie z h\u013eadiska prev\u00e1dzkov\u00fdch n\u00e1kladov.<\/p>\n

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Dimenzovanie p\u00e1ru z\u00e1vitovkov\u00fdch prevodov pre nepretr\u017eit\u00fa prev\u00e1dzku dopravn\u00edka<\/h2>\n

\"detail<\/p>\n

Dimenzovanie z\u00e1vitovkov\u00e9ho prevodu dopravn\u00edka vy\u017eaduje dva v\u00fdpo\u010dty, ktor\u00e9 sa v po\u010diato\u010dnej \u0161pecifik\u00e1cii \u010dasto vynech\u00e1vaj\u00fa: multiplik\u00e1tor kr\u00fatiaceho momentu pri spusten\u00ed a tepeln\u00fa kontrolu pre nepretr\u017eit\u00fa prev\u00e1dzku.<\/p>\n

Sp\u00fa\u0161\u0165ac\u00ed kr\u00fatiaci moment na za\u0165a\u017eenom remeni.<\/strong> P\u00e1sov\u00fd dopravn\u00edk, ktor\u00fd sa zastav\u00ed pod za\u0165a\u017een\u00edm a re\u0161tartuje s materi\u00e1lom na p\u00e1se, zaznamen\u00e1va pri \u0161tarte v\u00fdrazne vy\u0161\u0161\u00ed kr\u00fatiaci moment ako po\u010das ust\u00e1len\u00e9ho chodu. Prispieva k tomu statick\u00e9 trenie v p\u00e1se, usadzovanie materi\u00e1lu po\u010das zastavenia a n\u00e1beh zr\u00fdchlenia. Typick\u00fd multiplik\u00e1tor kr\u00fatiaceho momentu pri \u0161tarte za\u0165a\u017een\u00e9ho p\u00e1su sa pohybuje od 1,5-n\u00e1sobku (\u013eahk\u00e9 za\u0165a\u017eenie, kr\u00e1tke zastavenie) do 2,5-n\u00e1sobku (\u0165a\u017ek\u00fd sypk\u00fd materi\u00e1l, dlh\u0161ie zastavenie so zhutnen\u00edm materi\u00e1lu). Menovit\u00fd kr\u00fatiaci moment z\u00e1vitovkov\u00e9ho prevodu mus\u00ed prekro\u010di\u0165 kr\u00fatiaci moment pri \u0161tarte \u2013 nielen kr\u00fatiaci moment v ust\u00e1lenom stave \u2013 o rezervu servisn\u00e9ho faktora.<\/p>\n

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Vzorec na dimenzovanie z\u00e1vitovkov\u00e9ho prevodu dopravn\u00edka<\/div>\n
T_reme\u0148 = (F_reme\u0148 \u00d7 D_bubon) \/ 2<\/div>\n
T_spustenie = T_reme\u0148 \u00d7 K_spustenie \u00a0\u00a0 (K_start = 1,5 a\u017e 2,5)<\/span><\/div>\n
T_po\u017eadovan\u00e9 = T_spustenie \u00d7 SF \u00a0\u00a0 (SF = 1,25 a\u017e 2,0 na prev\u00e1dzkov\u00fa triedu)<\/span><\/div>\n
Menovit\u00fd kr\u00fatiaci moment p\u00e1ru z\u00e1vitovkov\u00fdch prevodov \u2265 T_required<\/div>\n
F_reme\u0148 = napnutie reme\u0148a (N), D_drum = priemer hnacieho bubna (m)<\/div>\n
K_start = multiplik\u00e1tor spustenia, SF = servisn\u00fd faktor<\/div>\n<\/div>\n

Tepeln\u00e1 kontrola pre nepretr\u017eit\u00fa prev\u00e1dzku.<\/strong> P\u00e1sov\u00e9 dopravn\u00edky \u010dasto be\u017eia 16 a\u017e 24 hod\u00edn denne a p\u00e1r z\u00e1vitovkov\u00fdch prevodov rozpty\u013euje pribli\u017ene 15 a\u017e 50 percent vstupn\u00e9ho v\u00fdkonu ako teplo (v z\u00e1vislosti od \u00fa\u010dinnosti). Pohon s v\u00fdkonom 5,5 kW s p\u00e1rom s jedn\u00fdm chodom pri 50-percentnej \u00fa\u010dinnosti generuje nepretr\u017eite 2,75 kW odpadov\u00e9ho tepla. Bez dostato\u010dn\u00e9ho chladenia \u2013 prirodzenou konvekciou, ventil\u00e1torom alebo cirkul\u00e1ciou oleja \u2013 m\u00f4\u017ee teplota krytu prekro\u010di\u0165 tepeln\u00fd limit maziva (zvy\u010dajne 90 a\u017e 100 stup\u0148ov Celzia pre syntetick\u00e9 mazivo), \u010do sp\u00f4sobuje zr\u00fdchlen\u00fa degrad\u00e1ciu. Ka\u017ed\u00fdch 10 stup\u0148ov nad referen\u010dnou teplotou maziva skracuje \u017eivotnos\u0165 maziva na polovicu. Pre ak\u00fdko\u013evek pohon z\u00e1vitovkov\u00fdch prevodov dopravn\u00edka s nepretr\u017eitou prev\u00e1dzkou s pr\u00edkonom nad 3 kW a p\u00e1rmi s jedn\u00fdm chodom \u0161pecifikujte rebrovan\u00e9 kryty alebo chladenie ventil\u00e1torom.<\/p>\n

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Pozn\u00e1mka k in\u017einierskemu stolu<\/div>\n

K\u00f3rejsk\u00e9 logistick\u00e9 centrum \u0161pecifikovalo pre nov\u00fa linku na triedenie bal\u00edkov dvojstup\u0148ov\u00e9 p\u00e1ry z\u00e1vitovkov\u00fdch prevodov s rozostupom 80 mm. V\u0161etk\u00fdch 24 dopravn\u00edkov bolo horizont\u00e1lnych. O \u0161es\u0165 mesiacov nesk\u00f4r zariadenie pridalo medziposchodie so \u0161tyrmi naklonen\u00fdmi prepravn\u00fdmi dopravn\u00edkmi s uhlom 15 stup\u0148ov \u2013 a t\u00edm pre obstar\u00e1vanie si objednal rovnak\u00e9 dvojstup\u0148ov\u00e9 p\u00e1ry, ak\u00e9 sa pou\u017e\u00edvaj\u00fa na horizont\u00e1lnych dopravn\u00edkoch. Do dvoch t\u00fd\u017ed\u0148ov oper\u00e1tori hl\u00e1sili sp\u00e4tn\u00fd chod bal\u00edkov po\u010das zastavenia motora pri zmene zmeny: krabice sa pri ka\u017edom zastaven\u00ed pos\u00favali dozadu o 0,5 a\u017e 1,5 metra. Dvojstup\u0148ov\u00fd p\u00e1r s uhlom 15 stup\u0148ov mal uhol n\u00e1behu pribli\u017ene 11 stup\u0148ov \u2013 \u010do je v\u00fdrazne viac ako uhol trenia pribli\u017ene 5 stup\u0148ov s nain\u0161talovan\u00fdm syntetick\u00fdm olejom PAG. P\u00e1ry boli geometricky neblokovacie. V\u00fdmena za jednostup\u0148ov\u00e9 p\u00e1ry s rovnakou rozostupom a modulom st\u00e1la 480 USD za pohon \u00d7 4 pohony = spolu 1 920 USD plus 2 dni mont\u00e1\u017enej pr\u00e1ce za 1 600 USD. N\u00e1hradn\u00e9 p\u00e1ry s uhlom n\u00e1behu 5,7 stup\u0148a boli za rovnak\u00fdch podmienok maziva na hranici samosvornosti. In\u017einieri pridali na ka\u017ed\u00fd pohon jednoduch\u00fd sp\u00e4tn\u00fd doraz ako dodato\u010dn\u00fa poistku \u2013 120 USD za jednotku. Celkov\u00e9 n\u00e1klady na opravu chyby v \u0161pecifik\u00e1cii boli 2 400 USD plus 2 dni oneskoren\u00e9ho uvedenia medziposchodia do prev\u00e1dzky. P\u00f4vodnej chybe sa dalo pred\u00eds\u0165 kontrolou tabu\u013eky rozhodovania o uhle sklonu pred objednan\u00edm. 4 \u0161ikm\u00e9 dopravn\u00edky potrebovali in\u00e9 p\u00e1ry z\u00e1vitovkov\u00fdch prevodov ako 24 horizont\u00e1lnych \u2013 rovnak\u00e1 stredov\u00e1 vzdialenos\u0165, rovnak\u00fd modul, in\u00fd po\u010det zapnut\u00ed.<\/p>\n<\/div>\n

<\/p>\n

V\u00fdber materi\u00e1lu pre p\u00e1ry z\u00e1vitovkov\u00fdch ozuben\u00fdch kolies dopravn\u00edka pod\u013ea prostredia<\/h2>\n
\n
\"z\u00e1vitovka<\/div>\n
\n

Prostredia dopravn\u00edkov siahaj\u00fa od \u010dist\u00fdch vn\u00fatorn\u00fdch logistick\u00fdch centier cez mokr\u00e9 haly na spracovanie potrav\u00edn a\u017e po pra\u0161n\u00e9 bane na otvorenom priestranstve. Materi\u00e1lov\u00e9 prevedenie z\u00e1vitovky a z\u00e1vitovkov\u00e9ho kolesa mus\u00ed zodpoveda\u0165 prostrediu \u2013 \u0161tandardn\u00fd fosforov\u00fd bronz funguje dobre v interi\u00e9ri, ale dopravn\u00edk na spracovanie r\u00fdb alebo p\u00e1s v lome vy\u017eaduje in\u00fa metalurgiu a ochranu povrchu.<\/p>\n

Praktick\u00fd rozsah v\u00fdberu materi\u00e1lu z\u00e1vitovkov\u00e9ho prevodu dopravn\u00edka pokr\u00fdvaj\u00fa tri kateg\u00f3rie prostredia.<\/p>\n<\/div>\n<\/div>\n

\n
\n
\u0160tandardn\u00e1 vn\u00fatorn\u00e1<\/div>\n

\u010cerv:<\/strong> Cementovan\u00e1 oce\u013e 16MnCr5, HRC 58-62, br\u00fasen\u00e1 Ra 0,4-0,8 \u00b5m.
\nKoleso:<\/strong> Fosforov\u00fd bronz CuSn12Ni, odvalcovan\u00fd Ra 1,6 \u00b5m.
\nMazivo:<\/strong> Syntetick\u00fd alebo miner\u00e1lny prevodov\u00fd olej PAG EP.
\nAplik\u00e1cia:<\/strong> Dopravn\u00edk automobilov\u00fdch dielov, triedenie bal\u00edkov, pod\u00e1vanie do baliacej linky.<\/p>\n<\/div>\n

\n
Mokr\u00e9 \/ Om\u00fdvanie<\/div>\n

\u010cerv:<\/strong> Nerezov\u00e1 oce\u013e AISI 304 alebo 316L alebo pozinkovan\u00e1 uhl\u00edkov\u00e1 oce\u013e.
\nKoleso:<\/strong> Hlin\u00edkov\u00fd bronz CuAl10Fe5Ni5 (vynikaj\u00faca odolnos\u0165 vo\u010di kor\u00f3zii v porovnan\u00ed s fosforov\u00fdm bronzom).
\nMazivo:<\/strong> Syntetick\u00e9 mazivo NSF H1 potravin\u00e1rskej kvality, utesnen\u00e9 puzdro.
\nAplik\u00e1cia:<\/strong> Spracovanie morsk\u00fdch plodov, mlie\u010dne v\u00fdrobky, n\u00e1poje, farmaceutick\u00fd priemysel.<\/p>\n<\/div>\n

\n
Pra\u0161n\u00e9 \/ Abraz\u00edvne<\/div>\n

\u010cerv:<\/strong> Prekalen\u00e1 oce\u013e 42CrMo4, HRC 28-34, br\u00fasen\u00e1 Ra 0,8 \u00b5m (odoln\u00e1 vo\u010di n\u00e1razu).
\nKoleso:<\/strong> Fosforov\u00fd bronz odlievan\u00fd odstredivo (hustej\u0161\u00ed, s men\u0161\u00edm mno\u017estvom p\u00f3rovit\u00fdch defektov ako pri gravita\u010dnom odlievan\u00ed).
\nMazivo:<\/strong> Utesnen\u00e9 mazivo na cel\u00fa dobu \u017eivotnosti s labyrintov\u00fdmi tesneniami, odvzdu\u0161\u0148ovac\u00ed filter.
\nAplik\u00e1cia:<\/strong> \u0164a\u017eba cementu, manipul\u00e1cia s uhl\u00edm, kamenivo.<\/p>\n<\/div>\n<\/div>\n

Vo\u013eba materi\u00e1lu je takmer v\u017edy dan\u00e1 sk\u00f4r prostred\u00edm ako za\u0165a\u017een\u00edm. Vn\u00fatorn\u00fd dopravn\u00edk s kr\u00fatiacim momentom 200 N\u00b7m a dopravn\u00edk na spracovanie r\u00fdb s kr\u00fatiacim momentom 200 N\u00b7m potrebuj\u00fa rovnak\u00fa kr\u00fatiacu kapacitu, ale ve\u013emi odli\u0161n\u00fa metalurgiu a tesnenie. Pou\u017eitie \u0161tandardn\u00e9ho fosforov\u00e9ho bronzu v prostred\u00ed mokr\u00e9ho um\u00fdvania vedie ku kor\u00f3zii sp\u00f4sobenej odzinkovan\u00edm na kolese \u2013 nevidite\u013enej, k\u00fdm hr\u00fabka zuba nestrat\u00ed 10 a\u017e 15 percent svojho p\u00f4vodn\u00e9ho rozmeru a n\u00e1hle sa nezv\u00fd\u0161i v\u00f4\u013ea.<\/p>\n

<\/p>\n

\u0160pecifik\u00e1cie troch p\u00e1rov z\u00e1vitovkov\u00fdch ozuben\u00fdch kolies dopravn\u00edka<\/h2>\n

\"aplik\u00e1cia<\/p>\n

Pr\u00edpad 1 \u2013 K\u00f3rejsk\u00fd dopravn\u00edk automobilov\u00fdch dielov: horizont\u00e1lny, priorita efekt\u00edvnosti<\/h3>\n

K\u00f3rejsk\u00fd dod\u00e1vate\u013e automobilov\u00e9ho priemyslu Tier 1 \u0161pecifikoval p\u00e1ry z\u00e1vitovkov\u00fdch prevodov pre 12 horizont\u00e1lnych dopravn\u00edkov prev\u00e1\u017eaj\u00facich lisovan\u00e9 panely karos\u00e9rie medzi lisovac\u00edmi linkami. R\u00fdchlos\u0165 p\u00e1su 0,8 m\/s, priemer hnacieho bubna 320 mm, napnutie reme\u0148a 2 200 N. Vypo\u010d\u00edtan\u00fd v\u00fdstupn\u00fd kr\u00fatiaci moment: T_belt = 2 200 \u00d7 0,32 \/ 2 = 352 N\u00b7m. N\u00e1sobite\u013e spustenia pre horizont\u00e1lny re\u0161tart s n\u00edzkym za\u0165a\u017een\u00edm: K_start = 1,3. Prev\u00e1dzkov\u00fd faktor pre mierny r\u00e1z (vari\u00e1cia \u010dasovania lisu): SF = 1,5. Po\u017eadovan\u00fd menovit\u00fd kr\u00fatiaci moment: 352 \u00d7 1,3 \u00d7 1,5 = 686 N\u00b7m. Sklon: 0 stup\u0148ov \u2013 \u017eiadne riziko sp\u00e4tn\u00e9ho chodu. \u0160pecifik\u00e1cia: 3-chodov\u00fd p\u00e1r z\u00e1vitovkov\u00fdch prevodov, modul 5, stredov\u00e1 vzdialenos\u0165 125 mm, q = 10, uhol n\u00e1behu 16,7 stup\u0148ov, prevodov\u00fd pomer 40:1. \u00da\u010dinnos\u0165 pri menovit\u00fdch podmienkach: 86 percent. Ro\u010dn\u00e1 \u00faspora elektriny v porovnan\u00ed so \u0161pecifik\u00e1ciou pre jeden \u0161tart pri 48-percentnej \u00fa\u010dinnosti: 16 200 kWh na pohon \u00d7 12 pohonov = 194 400 kWh = pribli\u017ene 24 000 USD ro\u010dne. Ponau\u010denie: pri horizont\u00e1lnych dopravn\u00edkoch nie je \u0161pecifikovanie viacn\u00e1sobn\u00fdch p\u00e1rov pre zv\u00fd\u0161enie efekt\u00edvnosti optimaliz\u00e1ciou \u2013 je to rozhodnutie o prev\u00e1dzkov\u00fdch n\u00e1kladoch s p\u00e4\u0165cifern\u00fdm ro\u010dn\u00fdm dopadom na typick\u00fa v\u00fdrobn\u00fa halu.<\/p>\n

Pr\u00edpad 2 \u2013 Japonsk\u00fd \u0161ikm\u00fd dopravn\u00edk potravin\u00e1rskej kvality: 18 stup\u0148ov, ochrana proti sp\u00e4tn\u00e9mu pohybu + oplachovanie<\/h3>\n

Japonsk\u00fd spracovate\u013e mrazen\u00fdch morsk\u00fdch plodov \u0161pecifikoval p\u00e1ry z\u00e1vitovkov\u00fdch prevodov pre 6 \u0161ikm\u00fdch prepravn\u00fdch dopravn\u00edkov prev\u00e1\u017eaj\u00facich mrazen\u00e9 t\u00e1cky s krevetami z um\u00fdvacej stanice na \u00farovni zeme do baliacej haly na medziposchod\u00ed. Sklon: 18 stup\u0148ov. Napnutie p\u00e1su pri plnom za\u0165a\u017een\u00ed: 1 800 N. Hnac\u00ed bubon: 250 mm. T_reme\u0148 = 225 N\u00b7m. K_\u0161tart = 2,0 (mrazen\u00e9 t\u00e1cky sa po\u010das re\u0161tartu prilepia k p\u00e1su). SF = 1,5 (mierny n\u00e1raz zo zmeny hmotnosti t\u00e1cok). T_po\u017eadovan\u00e9 = 225 \u00d7 2,0 \u00d7 1,5 = 675 N\u00b7m. Riziko sp\u00e4tn\u00e9ho chodu pri 18 stup\u0148och: vysok\u00e9 \u2013 gravita\u010dn\u00e1 zlo\u017eka na za\u0165a\u017eenom p\u00e1se by poh\u00e1\u0148ala p\u00e1s dozadu r\u00fdchlos\u0165ou pribli\u017ene 0,3 m\/s. \u0160pecifik\u00e1cia: p\u00e1r z\u00e1vitovkov\u00fdch prevodov s jedn\u00fdm chodom, modul 5, stredov\u00e1 vzdialenos\u0165 160 mm, prevodov\u00fd pomer 50:1, uhol n\u00e1behu 3,6 stup\u0148a (silne samosvorn\u00fd). Materi\u00e1l: z\u00e1vitovka z nehrdzavej\u00facej ocele AISI 316L, koleso z hlin\u00edkov\u00e9ho bronzu CuAl10Fe5Ni5. Povrchov\u00e1 \u00faprava: Ra 0,4 \u00b5m br\u00fasen\u00e1 (po\u017eiadavka pre potravin\u00e1rsku z\u00f3nu). Mazivo: Syntetick\u00e9 mazivo registrovan\u00e9 v NSF H1. Utesnen\u00e9 puzdro IP65. \u00da\u010dinnos\u0165: 42 percent \u2013 \u200b\u200b\u010do znamen\u00e1, \u017ee 3 kW motor poskytuje iba 1,26 kW u\u017eito\u010dn\u00e9ho v\u00fdkonu. Nev\u00fdhodou \u00fa\u010dinnosti s\u00fa n\u00e1klady na ochranu pred sp\u00e4tn\u00fdm chodom aj na \u0161pecifik\u00e1ciu pre potravin\u00e1rsku triedu. Ponau\u010denie: v aplik\u00e1ci\u00e1ch \u0161ikm\u00e9ho dopravn\u00edka pre potravin\u00e1rsku triedu je \u00fa\u010dinnos\u0165 poslednou prioritou \u2013 ochrana pred sp\u00e4tn\u00fdm chodom a zhoda s materi\u00e1lmi s\u00fa nevyhnutn\u00e9. Prehliada\u0165 reduk\u010dn\u00fd ventil so z\u00e1vitovkov\u00fdm prevodom<\/a> mo\u017enosti, ktor\u00e9 zodpovedaj\u00fa \u0161pecifik\u00e1ci\u00e1m pre potravin\u00e1rsku triedu a um\u00fdvanie pre pohony \u0161ikm\u00fdch dopravn\u00edkov.<\/p>\n

Pr\u00edpad 3 \u2013 Vietnamsk\u00fd bansk\u00fd dopravn\u00edk: 30 stup\u0148ov, jednorazov\u00fd + p\u00e1sov\u00e1 brzda<\/h3>\n

Vietnamsk\u00fd v\u00e1pencov\u00fd lom \u0161pecifikoval p\u00e1ry z\u00e1vitovkov\u00fdch ozuben\u00fdch kolies pre p\u00e1sov\u00fd dopravn\u00edk so sklonom 30 stup\u0148ov, ktor\u00fd prepravuje drven\u00fd kame\u0148 z prim\u00e1rneho \u010de\u013eus\u0165ov\u00e9ho drvi\u010da do sekund\u00e1rnej triediacej stanice. Napnutie p\u00e1su pri plnom za\u0165a\u017een\u00ed: 6 500 N. Hnac\u00ed bubon: 400 mm. T_reme\u0148 = 1 300 N\u00b7m. K_\u0161tart = 2,5 (zhutnen\u00fd kame\u0148 na p\u00e1se po\u010das dlh\u0161\u00edch zast\u00e1vok). SF = 2,0 (siln\u00fd n\u00e1raz z kame\u0148a nerovnomernej ve\u013ekosti). T_po\u017eadovan\u00e1 = 1 300 \u00d7 2,5 \u00d7 2,0 = 6 500 N\u00b7m. Riziko sp\u00e4tn\u00e9ho chodu pri 30 stup\u0148och: kritick\u00e9 \u2013 plne za\u0165a\u017een\u00fd 30-stup\u0148ov\u00fd p\u00e1s uklad\u00e1 dostatok energie na prudk\u00e9 zr\u00fdchlenie dozadu a sp\u00f4sobenie zlyhania spoja p\u00e1su. \u0160pecifik\u00e1cia: p\u00e1r z\u00e1vitovkov\u00fdch ozuben\u00fdch kolies s jedn\u00fdm chodom, modul 10, stredov\u00e1 vzdialenos\u0165 250 mm, q = 14, uhol n\u00e1behu 2,0 stup\u0148a (siln\u00e9 samosvorn\u00e9). Z\u00e1vitovka: kalen\u00e1 oce\u013e 42CrMo4, HRC 30. Koleso: odstredivo liaty fosforov\u00fd bronz CuSn12Ni. Doplnkov\u00e9: p\u00e1sov\u00e1 brzda na vysokor\u00fdchlostnom vstupnom hriadeli ako redundantn\u00e9 dr\u017eanie. Brzda sa aktivuje automaticky pri otvoren\u00ed styka\u010da motora a zabezpe\u010duje sekund\u00e1rne dr\u017eanie nez\u00e1visle od samosvorn\u00e9ho z\u00e1vitovkov\u00e9ho prevodu. Tesnenie: trojit\u00fd labyrint s odvzdu\u0161\u0148ovac\u00edm filtrom (v\u00e1pencov\u00fd prach). Chladenie: ventil\u00e1tor s n\u00faten\u00fdm obehom vzduchu na kryte (nepretr\u017eit\u00e1 prev\u00e1dzka pri teplote okolia 38 stup\u0148ov Celzia, jednorazov\u00fd \u0161tart s \u00fa\u010dinnos\u0165ou 38 percent generuje pribli\u017ene 5,6 kW odpadov\u00e9ho tepla). Ponau\u010denie: strm\u00e9 bansk\u00e9 dopravn\u00edky pracuj\u00fa na priese\u010dn\u00edku maxim\u00e1lneho rizika sp\u00e4tn\u00e9ho chodu, maxim\u00e1lneho rozbehov\u00e9ho kr\u00fatiaceho momentu, maxim\u00e1lneho tepeln\u00e9ho za\u0165a\u017eenia a maxim\u00e1lneho vystavenia kontamin\u00e1cii. Ka\u017ed\u00fd parameter je tla\u010den\u00fd na svoje limity \u2013 a z\u00e1vitovkov\u00fd prevod mus\u00ed zvl\u00e1dnu\u0165 v\u0161etky \u0161tyri s\u00fa\u010dasne.<\/p>\n

<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
\n
\nOt\u00e1zka: M\u00f4\u017eem pou\u017ei\u0165 rovnak\u00fd p\u00e1r z\u00e1vitovkov\u00fdch prevodov pre horizont\u00e1lne aj \u0161ikm\u00e9 dopravn\u00edky na tej istej v\u00fdrobnej linke?<\/summary>\n

Iba ak oba dopravn\u00edky dok\u00e1\u017eu akceptova\u0165 rovnak\u00fd po\u010det \u0161tartov. Ak s\u00fa niektor\u00e9 dopravn\u00edky horizont\u00e1lne a in\u00e9 s\u00fa naklonen\u00e9 nad 10 stup\u0148ov, horizont\u00e1lne by mali kv\u00f4li efekt\u00edvnosti pou\u017e\u00edva\u0165 viac\u0161tartov\u00e9 p\u00e1ry, zatia\u013e \u010do \u0161ikm\u00e9 by mali pou\u017e\u00edva\u0165 jedno\u0161tartov\u00e9 p\u00e1ry kv\u00f4li zabr\u00e1neniu sp\u00e4tn\u00e9ho chodu. Pou\u017eitie jedno\u0161tartov\u00fdch p\u00e1rov na horizont\u00e1lnych dopravn\u00edkoch plytv\u00e1 30 a\u017e 40 percentami vstupn\u00e9ho v\u00fdkonu. Pou\u017eitie viac\u0161tartov\u00fdch p\u00e1rov na \u0161ikm\u00fdch dopravn\u00edkoch predstavuje riziko sp\u00e4tn\u00e9ho chodu. \u0160tandardiz\u00e1cia na z\u00e1klade \u0161pecifik\u00e1cie jedn\u00e9ho p\u00e1ru naprie\u010d zmie\u0161an\u00fdmi sklonmi je be\u017en\u00e9 zjednodu\u0161enie obstar\u00e1vania, ktor\u00e9 stoj\u00ed podstatne viac z h\u013eadiska plytvania energiou alebo rizika sp\u00e4tn\u00e9ho chodu ako zachovanie dvoch \u0161pecifik\u00e1ci\u00ed.<\/p>\n<\/details>\n

\nOt\u00e1zka: \u010co sa stane so spo\u013eahlivos\u0165ou samosvoru po\u010das \u017eivotnosti z\u00e1vitovkov\u00e9ho ozuben\u00e9ho kolesa dopravn\u00edka?<\/summary>\n

Ako sa bronzov\u00e9 koleso opotrebov\u00e1va, efekt\u00edvny koeficient trenia v mieste kontaktu sa men\u00ed \u2013 a t\u00e1to zmena m\u00f4\u017ee prebieha\u0165 v oboch smeroch. Z\u00e1beh po\u010das prv\u00fdch 100 a\u017e 300 hod\u00edn zvy\u010dajne vyhlad\u00ed bronzov\u00fd povrch a mierne zn\u00ed\u017ei trenie, \u010do m\u00f4\u017ee u p\u00e1ru s hrani\u010dn\u00fdm samosvorn\u00fdm mechanizmom sp\u00f4sobi\u0165, \u017ee sa nezablokuje. Po z\u00e1behu sa koeficient trenia stabilizuje a zost\u00e1va konzistentn\u00fd tis\u00edce hod\u00edn. Pre kritick\u00e9 \u0161ikm\u00e9 dopravn\u00edky \u0161pecifikujte uhol n\u00e1behu aspo\u0148 o 1 a\u017e 2 stupne pod o\u010dak\u00e1van\u00fdm uhlom trenia po z\u00e1behu (pou\u017eite dynamick\u00fd uhol trenia, nie statick\u00fd). T\u00e1to rezerva zabezpe\u010duje, \u017ee samosvorn\u00e9 mechanizmy sa zachovaj\u00fa po\u010das celej \u017eivotnosti. Ak p\u00e1r pracuje do 1 stup\u0148a od prahu blokovania, pridajte ako poistku samostatn\u00fa brzdu.<\/p>\n<\/details>\n

\nOt\u00e1zka: Ako ovplyv\u0148uje r\u00fdchlos\u0165 p\u00e1su \u0161pecifik\u00e1ciu p\u00e1ru z\u00e1vitovkov\u00fdch prevodov pre dopravn\u00edky?<\/summary>\n

R\u00fdchlos\u0165 p\u00e1su ur\u010duje po\u017eadovan\u00e9 ot\u00e1\u010dky v\u00fdstupn\u00e9ho hriade\u013ea a teda aj prevodov\u00fd pomer potrebn\u00fd pri danej r\u00fdchlosti motora. Typick\u00e9 p\u00e1sov\u00e9 dopravn\u00edky be\u017eia pri r\u00fdchlosti 0,3 a\u017e 2,0 m\/s. Pre hnac\u00ed bubon s priemerom 300 mm zodpoved\u00e1 1,0 m\/s pribli\u017ene 64 ot\u00e1\u010dkam za min\u00fatu v\u00fdstupu. Z motora s ot\u00e1\u010dkami 1 450 za min\u00fatu je po\u017eadovan\u00fd pomer pribli\u017ene 23:1 \u2013 dosiahnute\u013en\u00fd v jednom stupni z\u00e1vitovkov\u00e9ho prevodu. R\u00fdchlej\u0161ie p\u00e1sy (nad 2 m\/s) m\u00f4\u017eu vy\u017eadova\u0165 ni\u017e\u0161ie pomery, ktor\u00e9 aj tak ved\u00fa k 2 alebo 3 \u0161tartom. Pomal\u0161ie p\u00e1sy (pod 0,3 m\/s) vy\u017eaduj\u00fa vy\u0161\u0161ie pomery, ktor\u00e9 uprednost\u0148uj\u00fa p\u00e1ry s jedn\u00fdm \u0161tartom s dodato\u010dn\u00fdm pr\u00edspevkom prevodu. R\u00fdchlos\u0165 p\u00e1su priamo nemen\u00ed rozhodnutie o ochrane pred sp\u00e4tn\u00fdm chodom (ktor\u00e9 z\u00e1vis\u00ed od sklonu), ale ovplyv\u0148uje, \u010di po\u017eadovan\u00fd pomer prirodzene spad\u00e1 do rozsahu samosvorn\u00fdch alebo neblokuj\u00facich \u0161tartov.<\/p>\n<\/details>\n

\nOt\u00e1zka: Mal by som okrem samosvorn\u00e9ho z\u00e1vitovkov\u00e9ho prevodu pre \u0161ikm\u00e9 dopravn\u00edky \u0161pecifikova\u0165 aj sp\u00e4tn\u00fd chod?<\/summary>\n

Pre sklony nad 15 stup\u0148ov, pri ktor\u00fdch sa prepravuje \u0165a\u017ek\u00fd sypk\u00fd materi\u00e1l, \u00e1no. Sp\u00e4tn\u00fd doraz (tie\u017e naz\u00fdvan\u00fd zariadenie proti sp\u00e4tn\u00e9mu chodu alebo z\u00e1dr\u017e) je samostatn\u00e9 mechanick\u00e9 zariadenie namontovan\u00e9 na hnacom hriadeli, ktor\u00e9 umo\u017e\u0148uje ot\u00e1\u010danie v smere dopredu, ale blokuje sa v smere sp\u00e4tn\u00e9ho chodu. Cena je zvy\u010dajne 80 a\u017e 200 USD za jednotku. Sp\u00e4tn\u00fd doraz poskytuje redundantn\u00fa ochranu proti sp\u00e4tn\u00e9mu chodu, aj ke\u010f je samosvorn\u00fd mechanizmus z\u00e1vitovkov\u00e9ho prevodu naru\u0161en\u00fd vibr\u00e1ciami, zmenou mazania alebo zmenou koeficientu trenia sp\u00f4sobenou opotreben\u00edm. Pre dopravn\u00edky pr\u00edstupn\u00e9 \u013eu\u010fom (obsluha stojaca v bl\u00edzkosti p\u00e1su) je sp\u00e4tn\u00fd doraz \u010dasto predp\u00edsan\u00fd bezpe\u010dnostn\u00fdmi predpismi bez oh\u013eadu na stav blokovania z\u00e1vitovkov\u00e9ho prevodu. Pre vzdialen\u00e9 alebo bezobslu\u017en\u00e9 dopravn\u00edky je sp\u00e4tn\u00fd doraz rozhodnut\u00edm zalo\u017een\u00fdm na n\u00e1sledkoch udalosti sp\u00e4tn\u00e9ho chodu \u2013 rozsypan\u00ed materi\u00e1lu, po\u0161koden\u00ed p\u00e1su alebo bezpe\u010dnostnom riziku.<\/p>\n<\/details>\n

\nOt\u00e1zka: Ako vypo\u010d\u00edtam napnutie reme\u0148a pre dimenzovanie p\u00e1ru z\u00e1vitovkov\u00fdch ozuben\u00fdch kolies?<\/summary>\n

Napnutie reme\u0148a pre dimenzovanie z\u00e1vitovkov\u00e9ho prevodu je efekt\u00edvne nap\u00e4tie na hnacom bubne \u2013 rozdiel medzi nap\u00e4t\u00edm na tesnej a uvo\u013enenej strane vyn\u00e1soben\u00fd koeficientom trenia na povrchu bubna. Pre odhad pri prvom prechode: F_eff = (hmotnos\u0165 na meter \u00d7 d\u013a\u017eka reme\u0148a \u00d7 g \u00d7 (\u00b5_r \u00d7 cos \u03b8 + sin \u03b8)) + (F_materi\u00e1l \u00d7 r\u00fdchlos\u0165 reme\u0148a), kde \u00b5_r je koeficient trenia val\u010dekov (0,02 a\u017e 0,05 pre \u0161tandardn\u00e9 val\u010deky), \u03b8 je uhol sklonu a F_materi\u00e1l je odpor \u0161pecifick\u00fd pre dan\u00fd materi\u00e1l. Pre presn\u00fd v\u00fdpo\u010det pou\u017eite metodiku DIN 22101 (norma pre p\u00e1sov\u00e9 dopravn\u00edky) alebo CEMA (Asoci\u00e1cia v\u00fdrobcov dopravn\u00edkov\u00fdch zariaden\u00ed). Renomovan\u00ed dod\u00e1vatelia z\u00e1vitovkov\u00fdch prevodov overia v\u00e1\u0161 v\u00fdpo\u010det napnutia reme\u0148a ako s\u00fa\u010das\u0165 slu\u017eby dimenzovania ozuben\u00fdch kolies, ak poskytnete d\u013a\u017eku reme\u0148a, r\u00fdchlos\u0165, sklon a hustotu materi\u00e1lu.<\/p>\n<\/details>\n

\nOt\u00e1zka: Ak\u00e1 je typick\u00e1 \u017eivotnos\u0165 z\u00e1vitovkov\u00e9ho prevodov\u00e9ho p\u00e1ru na dopravn\u00edku, ktor\u00fd pracuje na dve zmeny denne?<\/summary>\n

Pri spr\u00e1vne \u0161pecifikovanom p\u00e1re (spr\u00e1vny menovit\u00fd kr\u00fatiaci moment s prev\u00e1dzkov\u00fdm faktorom, spr\u00e1vny po\u010det \u0161tartov pre dan\u00fd sklon, spr\u00e1vny materi\u00e1l pre dan\u00e9 prostredie) je typick\u00e1 \u017eivotnos\u0165 4 a\u017e 8 rokov pri dvojzmennej prev\u00e1dzke (5 000 a\u017e 6 000 hod\u00edn ro\u010dne). Prim\u00e1rnym prvkom podliehaj\u00facim opotrebovaniu je bronzov\u00e9 koleso \u2013 oce\u013eov\u00fd z\u00e1vitovka zvy\u010dajne vydr\u017e\u00ed dlh\u0161ie ako 2 a\u017e 3 v\u00fdmeny kolies. V\u00f4\u013eu monitorujte ka\u017edoro\u010dne; ke\u010f v\u00f4\u013ea dosiahne dvojn\u00e1sobok hodnoty uvedenej v dodacom certifik\u00e1te, napl\u00e1nujte v\u00fdmenu kolesa v nasleduj\u00facom obdob\u00ed \u00fadr\u017eby. Pri trojzmennej prev\u00e1dzke alebo nepretr\u017eitej prev\u00e1dzke 24 hod\u00edn denne, 7 dn\u00ed v t\u00fd\u017edni skr\u00e1\u0165te o\u010dak\u00e1van\u00fa \u017eivotnos\u0165 na 2,5 a\u017e 5 rokov v d\u00f4sledku akumulovan\u00e9ho tepeln\u00e9ho za\u0165a\u017eenia a opotrebenia. \u0160pecifikovanie br\u00fasenej povrchovej \u00fapravy (Ra 0,4 \u00b5m) z\u00e1vitovky predl\u017euje \u017eivotnos\u0165 kolesa pribli\u017ene o 30 a\u017e 50 percent v porovnan\u00ed s povrchovou \u00fapravou iba odva\u013eovan\u00edm (Ra 1,6 \u00b5m) v\u010faka zlep\u0161enej tvorbe mazacieho filmu.<\/p>\n<\/details>\n<\/div>\n

<\/p>\n

P\u00e1sov\u00e9 dopravn\u00edky s\u00fa chrbticou priemyselnej manipul\u00e1cie s materi\u00e1lom a p\u00e1r z\u00e1vitovkov\u00fdch prevodov je hnac\u00edm komponentom, ktor\u00fd zabezpe\u010duje funk\u010dnos\u0165 v\u00e4\u010d\u0161iny z nich. Tabu\u013eka rozhodovania o uhle sklonu rozde\u013euje \u0161pecifik\u00e1ciu na dve jasn\u00e9 cesty: horizont\u00e1lne a mierne sklony pou\u017e\u00edvaj\u00fa viacstup\u0148ov\u00e9 p\u00e1ry pre efektivitu; mierne a strm\u00e9 sklony pou\u017e\u00edvaj\u00fa p\u00e1ry s jedn\u00fdm stup\u0148om pre samosvorn\u00fa ochranu proti sp\u00e4tn\u00e9mu pohybu. Medzi 8 a 12 stup\u0148ami z\u00e1vis\u00ed rozhodnutie od hmotnosti materi\u00e1lu a n\u00e1sledkov sp\u00e4tn\u00e9ho pohybu. Sp\u00fa\u0161\u0165ac\u00ed kr\u00fatiaci moment na za\u0165a\u017eenom p\u00e1se dosahuje 1,5 a\u017e 2,5-n\u00e1sobok ust\u00e1len\u00e9ho kr\u00fatiaceho momentu v chode \u2013 naj\u010dastej\u0161ie prehliadan\u00fd faktor ve\u013ekosti pri obstar\u00e1van\u00ed z\u00e1vitovkov\u00fdch prevodov dopravn\u00edka. P\u00e1rovanie materi\u00e1lov sa riadi prostred\u00edm: \u0161tandardn\u00fd fosforov\u00fd bronz pre \u010dist\u00e9 vn\u00fatorn\u00e9 priestory, hlin\u00edkov\u00fd bronz alebo nehrdzavej\u00faca oce\u013e pre mokr\u00e9 a um\u00fdvate\u013en\u00e9 aplik\u00e1cie, kalen\u00fd oce\u013eov\u00fd z\u00e1vitovkov\u00fd dopravn\u00edk s odstredivo liatym bronzom pre pra\u0161n\u00e9 bansk\u00e9 aplik\u00e1cie. Rozdiel v n\u00e1kladoch medzi spr\u00e1vnym a nespr\u00e1vnym rozhodnut\u00edm sa meria v plytvan\u00ed energiou, incidentoch sp\u00e4tn\u00e9ho pohybu alebo pred\u010dasnom zlyhan\u00ed \u2013 to v\u0161etko prevy\u0161uje n\u00e1klady na samotn\u00e9 p\u00e1ry ozuben\u00fdch kolies v prvom roku prev\u00e1dzky.<\/p>\n

Pre k\u00f3rejsk\u00fdch a japonsk\u00fdch v\u00fdrobcov dopravn\u00edkov, ktor\u00ed \u0161pecifikuj\u00fa p\u00e1ry z\u00e1vitovkov\u00fdch prevodov pre nov\u00e9 v\u00fdrobn\u00e9 linky alebo programy v\u00fdmeny, na\u0161e technick\u00e9 oddelenie vykon\u00e1 tabu\u013eku rozhodovania o uhle sklonu a v\u00fdpo\u010det rozbehov\u00e9ho kr\u00fatiaceho momentu s oh\u013eadom na va\u0161e \u0161pecifick\u00e9 parametre reme\u0148a. \u0160tandardn\u00fd katal\u00f3g z\u00e1vitovkov\u00e9 prevody z fosforov\u00e9ho bronzu<\/a> Pokr\u00fdvaj\u00fa rozostupy os\u00ed od 50 do 250 mm v konfigur\u00e1ci\u00e1ch s jedn\u00fdm a\u017e \u0161tyrmi chodmi. K dispoz\u00edcii s\u00fa aj z\u00e1kazkov\u00e9 kombin\u00e1cie materi\u00e1lov (nehrdzavej\u00faca oce\u013e, hlin\u00edkov\u00fd bronz, kalen\u00e9) s dodacou lehotou 4 a\u017e 6 t\u00fd\u017ed\u0148ov \u2013 odo\u0161lite \u017eiados\u0165 \u0161pecifik\u00e1cia pohonu dopravn\u00edka<\/a> po\u017eiadavku s parametrami v\u00e1\u0161ho reme\u0148a a n\u00e1\u0161 t\u00edm v\u00e1m do jedn\u00e9ho k\u00f3rejsk\u00e9ho pracovn\u00e9ho d\u0148a vr\u00e1ti kompletn\u00e9 odpor\u00fa\u010danie pre p\u00e1r z\u00e1vitovkov\u00fdch prevodov.<\/p>\n

<\/p>\n

\n

Dimenzovanie z\u00e1vitovkov\u00e9ho prevodov\u00e9ho p\u00e1ru pre nov\u00fd alebo existuj\u00faci p\u00e1sov\u00fd dopravn\u00edk?<\/h3>\n

Po\u0161lite n\u00e1m r\u00fdchlos\u0165 reme\u0148a, napnutie reme\u0148a (alebo v\u00fdkon a prevodov\u00fd pomer motora), uhol sklonu a popis prostredia. Skontrolujeme tabu\u013eku uhlov sklonu, vypo\u010d\u00edtame \u0161tartovac\u00ed kr\u00fatiaci moment, odporu\u010d\u00edme spr\u00e1vny po\u010det \u0161tartov a pon\u00fakneme \u0161tandardn\u00e9 aj z\u00e1kazkov\u00e9 materi\u00e1lov\u00e9 mo\u017enosti \u2013 zvy\u010dajne do jedn\u00e9ho k\u00f3rejsk\u00e9ho pracovn\u00e9ho d\u0148a.<\/p>\n

Vy\u017eiadajte si \u0161pecifik\u00e1ciu pohonu dopravn\u00edka \u2192<\/a><\/p>\n<\/div>\n

upravi\u0165 pou\u017e\u00edvate\u013eom cxm<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Korea Ever-Power \u00b7 Application Engineering Guide Worm and Worm Wheel for Belt Conveyor Drives \u2014 Anti-Rollback Guide A horizontal conveyor needs efficiency. An inclined conveyor needs anti-rollback. The tipping point sits around 10 degrees of incline \u2014 below it, a multi-start worm gear pair saves energy; above it, a single-start pair prevents the loaded belt […]<\/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":[2821],"tags":[],"class_list":["post-1352","post","type-post","status-publish","format-standard","hentry","category-worm-and-worm-wheel"],"_links":{"self":[{"href":"https:\/\/worm-and-worm-wheel.com\/sk\/wp-json\/wp\/v2\/posts\/1352","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/worm-and-worm-wheel.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/worm-and-worm-wheel.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/sk\/wp-json\/wp\/v2\/comments?post=1352"}],"version-history":[{"count":1,"href":"https:\/\/worm-and-worm-wheel.com\/sk\/wp-json\/wp\/v2\/posts\/1352\/revisions"}],"predecessor-version":[{"id":1354,"href":"https:\/\/worm-and-worm-wheel.com\/sk\/wp-json\/wp\/v2\/posts\/1352\/revisions\/1354"}],"wp:attachment":[{"href":"https:\/\/worm-and-worm-wheel.com\/sk\/wp-json\/wp\/v2\/media?parent=1352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/sk\/wp-json\/wp\/v2\/categories?post=1352"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/sk\/wp-json\/wp\/v2\/tags?post=1352"}],"curies":[{"name":"pracovn\u00fd list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}