{"id":1922,"date":"2026-04-09T05:39:49","date_gmt":"2026-04-09T05:39:49","guid":{"rendered":"https:\/\/wormwheelgear.top\/?p=1922"},"modified":"2026-04-09T05:39:49","modified_gmt":"2026-04-09T05:39:49","slug":"worm-gear-noise-and-vibration-what-the-sound-reveals-and-how-to-engineer-it-out","status":"publish","type":"post","link":"https:\/\/wormwheelgear.top\/cs\/worm-gear-noise-and-vibration-what-the-sound-reveals-and-how-to-engineer-it-out\/","title":{"rendered":"Worm Gear Noise and Vibration — What the Sound Reveals and How to Engineer It Out"},"content":{"rendered":"
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Znalostn\u00ed \u0159ada \u00b7 B9 \u00b7 Hluk a vibrace<\/p>\n

\u0160nekov\u00fd p\u0159evod Hluk a vibrace<\/span> \u2014 Co zvuk prozrazuje a jak to zpracovat<\/h1>\n

Periodick\u00e9 klep\u00e1n\u00ed s frekvenc\u00ed 91 Hz, kter\u00e9 se objevilo v \u0161nekov\u00e9m p\u0159evodu po t\u0159ech letech tich\u00e9ho provozu. Samotn\u00e1 frekvence identifikovala hlavn\u00ed p\u0159\u00ed\u010dinu bez nutnosti demont\u00e1\u017ee. Hluk \u0161nekov\u00e9ho p\u0159evodu nen\u00ed jen nep\u0159\u00edjemn\u00fd \u2013 je to diagnostick\u00e1 informace zak\u00f3dovan\u00e1 v akustick\u00e9 frekvenci.<\/p>\n

Anal\u00fdza frekven\u010dn\u00ed s\u00edt\u011b<\/span>
\nLo\u017eisko vs. \u0161um s\u00edt\u011b<\/span>
\nSn\u00ed\u017een\u00ed ve f\u00e1zi n\u00e1vrhu<\/span>
\nOpravy po instalaci<\/span><\/div>\n<\/div>\n<\/section>\n
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\u2699 Korea Ever-Power Worm Gear Co., LtdAnsan-si, Gyeonggi-do, Koreasales@wormwheelgear.top<\/div>\n<\/div>\n
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Knock 91 Hz: Jak frekvence identifikuje re\u017eim selh\u00e1n\u00ed<\/h2>\n

\u0160nekov\u00fd p\u0159evodov\u00fd rohov\u00fd pohon dopravn\u00edku bal\u00edk\u016f v logistick\u00e9m centru b\u011b\u017eel ti\u0161e t\u0159i roky, ne\u017e si \u00fadr\u017eb\u00e1\u0159 v\u0161iml periodick\u00e9ho kovov\u00e9ho klep\u00e1n\u00ed. Ne nep\u0159etr\u017eit\u00e9ho \u2013 periodick\u00e9ho, v pravideln\u00fdch intervalech. Aplikace pro m\u011b\u0159en\u00ed vibrac\u00ed v chytr\u00e9m telefonu nam\u011b\u0159ila frekvenci klep\u00e1n\u00ed p\u0159ibli\u017en\u011b 91 Hz.<\/p>\n

Matematika: ot\u00e1\u010dky \u0161nekov\u00e9ho h\u0159\u00eddele 1 450 ot\/min = 24,2 ot\u00e1\u010dek za sekundu. Dvojit\u00fd \u0161nekov\u00fd pohon (z1=2): frekvence z\u00e1b\u011bru = 24,2 x 2 = 48,3 Hz. Po\u010det zub\u016f kola z2=40, ot\u00e1\u010dky kola = 1 450\/40 = 36,25 ot\/min = 0,604 ot\u00e1\u010dek za sekundu. Ani 48,3 Hz, ani 0,604 Hz neodpov\u00eddaj\u00ed 91 Hz. Ale frekvence lo\u017eiska vnit\u0159n\u00edho krou\u017eku \u0161nekov\u00e9ho h\u0159\u00eddele p\u0159i 1 450 ot\/min, se specifick\u00fdm lo\u017eiskem (12 valiv\u00fdch t\u011bles, kontaktn\u00ed \u00fahel 0) = p\u0159ibli\u017en\u011b 8,8 x 1 450\/60 = 212 Hz. St\u00e1le \u017e\u00e1dn\u00e1 shoda. Odpov\u011b\u010f: 91 Hz je p\u0159ibli\u017en\u011b \u010dty\u0159n\u00e1sobek frekvence ot\u00e1\u010den\u00ed kola (4 x 0,604 Hz x 60 = ekvivalent 144 ot.\/min \u2013 ne tak docela), ale velmi bl\u00edzko frekvenci defektu vn\u011bj\u0161\u00edho krou\u017eku lo\u017eiska (BPFO) pro lo\u017eisko \u0161nekov\u00e9ho h\u0159\u00eddele p\u0159i 1 450 ot.\/min se 7prvkov\u00fdm lo\u017eiskem: 3,5 x 1 450\/60 = 84,6 Hz \u2013 nen\u00ed to p\u0159esn\u00e9, ale je to v rozsahu.<\/p>\n

\u00dadr\u017eb\u00e1\u0159sk\u00fd t\u00fdm rozebral pohon a zjistil: vn\u011bj\u0161\u00ed krou\u017eek lo\u017eiska \u0161nekov\u00e9ho h\u0159\u00eddele m\u011bl jedinou \u00fanavovou vadu o d\u00e9lce p\u0159ibli\u017en\u011b 2 mm. Poka\u017ed\u00e9, kdy\u017e valiv\u00fd element p\u0159ejel p\u0159es tuto vadu, zp\u016fsobil klep\u00e1n\u00ed. Samotn\u00e9 \u0161nekov\u00e9 kolo bylo ve v\u00fdborn\u00e9m stavu. Bez frekven\u010dn\u00ed anal\u00fdzy by standardn\u00edm kontroln\u00edm postupem byla v\u00fdm\u011bna \u0161nekov\u00e9ho kola. D\u00edky frekven\u010dn\u00ed anal\u00fdze byla nalezena spr\u00e1vn\u00e1 a mnohem levn\u011bj\u0161\u00ed oprava \u2013 pouze v\u00fdm\u011bna lo\u017eiska \u2013 bez demont\u00e1\u017ee kola.<\/p>\n

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Co v\u00e1m \u0159ekne diagnostika hluku:<\/strong> Frekvence s\u00edt\u011b a jej\u00ed harmonick\u00e9 = chyby geometrie ozuben\u00e9ho kola (odchylka profilu, chyba stoup\u00e1n\u00ed). Subharmonick\u00e9 frekvence s\u00edt\u011b = odchylka mezi zuby (chyba stoup\u00e1n\u00ed, rozd\u00edln\u00e9 zat\u00ed\u017een\u00ed zubu). Frekvence vad lo\u017eisek (BPFI, BPFO, BSF) = opot\u0159eben\u00ed nebo po\u0161kozen\u00ed lo\u017eiska. Harmonick\u00e9 frekvence ot\u00e1\u010den\u00ed h\u0159\u00eddele = excentricita, nevyv\u00e1\u017eenost nebo nesouosost. \u0160irokop\u00e1smov\u00fd \u0161um pozad\u00ed = kvalita mazac\u00edho filmu. Ka\u017ed\u00e1 z nich m\u00e1 jinou, vypo\u010d\u00edtatelnou frekvenci.<\/p>\n<\/div>\n

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V\u00fdpo\u010det frekvence s\u00edt\u011b \u2013 z\u00e1klad anal\u00fdzy hluku \u0161nekov\u00e9ho p\u0159evodu<\/h2>\n

S\u00ed\u0165ov\u00e1 frekvence je rychlost, s jakou se z\u00e1vit \u0161neku za\u010d\u00edn\u00e1 dot\u00fdkat zub\u016f kola. Je to z\u00e1kladn\u00ed frekvence ve\u0161ker\u00e9ho hluku a vibrac\u00ed souvisej\u00edc\u00edch s p\u0159evodem v \u0161nekov\u00e9m pohonu. Ve\u0161ker\u00fd hluk generovan\u00fd p\u0159evodem se vyskytuje na s\u00ed\u0165ov\u00e9 frekvenci a jej\u00edch celo\u010d\u00edseln\u00fdch harmonick\u00fdch (2x, 3x, 4x s\u00ed\u0165ov\u00e1 frekvence).<\/p>\n

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Vzorec pro s\u00ed\u0165ovou frekvenci<\/div>\n
f_s\u00ed\u0165 (Hz) = n_\u010derv\u016f (ot.\/min.) x z1 \/ 60<\/div>\n
n_worm = ot\u00e1\u010dky \u0161nekov\u00e9ho h\u0159\u00eddele (ot.\/min)<\/span>
\nz1 = po\u010det za\u010d\u00e1tk\u016f \u0161nekov\u00e9ho z\u00e1vitu (1, 2 nebo 4)<\/span>
\nP\u0159\u00edklad: 1 450 ot.\/min, jednor\u00e1zov\u00fd chod (z1=1): f_mesh = 24,2 Hz<\/span>
\nP\u0159\u00edklad: 1 450 ot.\/min, dvojit\u00fd start (z1=2): f_mesh = 48,3 Hz<\/span>
\nP\u0159\u00edklad: 1 450 ot.\/min, \u010dty\u0159chod\u00fd (z1=4): f_mesh = 96,7 Hz<\/span>
\nHarmonick\u00e9: 2x s\u00ed\u0165 = 2 x f_mesh; 3x s\u00ed\u0165 = 3 x f_mesh atd.<\/span><\/div>\n<\/div>\n

Frekvence s\u00edt\u011b ur\u010duje tempo hluku generovan\u00e9ho ozuben\u00fdm kolem. Ka\u017ed\u00e1 chyba geometrie ozuben\u00e9ho kola zp\u016fsobuje zm\u011bnu s\u00edly v m\u00edst\u011b kontaktu s\u00edt\u011b p\u0159i ka\u017ed\u00e9m cyklu z\u00e1b\u011bru zubu \u2013 co\u017e produkuje akustick\u00fd v\u00fdstup p\u0159i f_mesh. Odchylka profilu (Ff) zp\u016fsobuje kr\u00e1tkodobou zm\u011bnu r\u00e1zov\u00e9 s\u00edly p\u0159i ka\u017ed\u00e9m z\u00e1b\u011bru zubu: akustick\u00fd v\u00fdstup p\u0159i f_mesh a harmonick\u00e9 slo\u017eky. Odchylka p\u0159edstihu (Fb) zp\u016fsobuje hladkou sinusovou zm\u011bnu to\u010div\u00e9ho momentu b\u011bhem jedn\u00e9 cel\u00e9 ot\u00e1\u010dky \u0161nekov\u00e9ho h\u0159\u00eddele: akustick\u00fd v\u00fdstup p\u0159i frekvenci ot\u00e1\u010den\u00ed h\u0159\u00eddele a jej\u00edch harmonick\u00fdch slo\u017eek, moduluj\u00edc\u00ed amplitudu frekvence s\u00edt\u011b.<\/p>\n

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Charakter hluku \/ vibrac\u00ed<\/th>\nFrekvence<\/th>\nHlavn\u00ed p\u0159\u00ed\u010dina<\/th>\nNal\u00e9havost<\/th>\n<\/tr>\n<\/thead>\n
Konstantn\u00ed t\u00f3n, \u00fam\u011brn\u00fd rychlosti<\/td>\nf_mesh a harmonick\u00e9<\/td>\nOdchylka profilu ozuben\u00e9ho kola (Ff) \u2013 norm\u00e1ln\u00ed pro DIN 8-9; zkontrolujte, zda je nov\u00e9<\/td>\nProzkoumejte, zda se objev\u00ed n\u00e1hl\u00fd n\u00e1stup nebo se zvy\u0161uje amplituda<\/td>\n<\/tr>\n
T\u00f3n s postrann\u00edmi p\u00e1smy \u00fam\u011brn\u00fdmi rychlosti<\/td>\nf_s\u00ed\u0165 +\/- n_h\u0159\u00eddel<\/td>\nModula\u010dn\u00ed s\u00ed\u0165 odchylky stoup\u00e1n\u00ed (Fb) \u2013 kontrola rozte\u010de start\u016f v\u00edcechod\u00e9ho \u0161neku<\/td>\nZkontrolujte, zda je nad \u00farovn\u00ed tolerance t\u0159\u00eddy DIN<\/td>\n<\/tr>\n
Periodick\u00e9 klep\u00e1n\u00ed p\u0159i frekvenci ot\u00e1\u010den\u00ed kola.<\/td>\n1x ot\u00e1\u010dky kola = n_\u010derv\u016f\/z2\/60 Hz<\/td>\nJeden po\u0161kozen\u00fd zub nebo ciz\u00ed p\u0159edm\u011bt zaseknut\u00fd v kole<\/td>\nOkam\u017eit\u011b \u2013 zastavte a zkontrolujte<\/td>\n<\/tr>\n
Periodick\u00e9 klep\u00e1n\u00ed NE na p\u0159evodov\u00fdch frekvenc\u00edch<\/td>\nFrekvence vad lo\u017eisek BPFO\/BPFI<\/td>\nOdlupov\u00e1n\u00ed vnit\u0159n\u00edho nebo vn\u011bj\u0161\u00edho krou\u017eku lo\u017eiska \u2013 vypo\u010ditatelno z geometrie lo\u017eiska<\/td>\nNal\u00e9hav\u00e9 \u2013 v\u00fdm\u011bna lo\u017eiska p\u0159ed poruchou<\/td>\n<\/tr>\n
Sy\u010den\u00ed \u0161irokop\u00e1smov\u00e9ho p\u0159ipojen\u00ed se zvy\u0161uje s rychlost\u00ed<\/td>\n\u017d\u00e1dn\u00e1 diskr\u00e9tn\u00ed frekvence<\/td>\nMezn\u00ed maz\u00e1n\u00ed \u2013 nedostate\u010dn\u00fd olejov\u00fd film v m\u00edst\u011b kontaktu se z\u00e1b\u011brem<\/td>\nZvy\u0161te viskozitn\u00ed stupe\u0148 maziva; zkontrolujte hladinu oleje<\/td>\n<\/tr>\n
N\u00edzkofrekven\u010dn\u00ed dun\u011bn\u00ed p\u0159i v\u0161ech rychlostech<\/td>\nFrekvence ot\u00e1\u010den\u00ed h\u0159\u00eddele<\/td>\nExcentricita nebo nevyv\u00e1\u017eenost h\u0159\u00eddele; nesouosost spojky<\/td>\nProzkoumejte mont\u00e1\u017e a h\u00e1zivost h\u0159\u00eddele<\/td>\n<\/tr>\n
Rezonan\u010dn\u00ed struktur\u00e1ln\u00ed zvon\u011bn\u00ed po s\u00ed\u0165ov\u00fdch ud\u00e1lostech<\/td>\nStruktur\u00e1ln\u00ed vlastn\u00ed frekvence<\/td>\nRezonance pouzdra nebo nosn\u00e9 konstrukce buzen\u00e1 s\u00ed\u0165ovou frekvenc\u00ed<\/td>\nZpevnit strukturu nebo zm\u011bnit frekvenci s\u00edt\u011b zm\u011bnou pom\u011bru\/rychlosti<\/td>\n<\/tr>\n
Tich\u00fd, kdy\u017e je zima, hlu\u010dn\u00fd, kdy\u017e je teplo<\/td>\nZm\u011bny s teplotou<\/td>\nKlesaj\u00edc\u00ed viskozita oleje s teplotou \u2013 posun re\u017eimu hrani\u010dn\u00edho maz\u00e1n\u00ed<\/td>\nVym\u011b\u0148te mazivo za mazivo s vy\u0161\u0161\u00edm viskozitn\u00edm indexem; zkontrolujte teplotu sk\u0159\u00edn\u011b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Jak kvalita kontaktn\u00edho vzoru ur\u010duje hladinu hluku<\/h2>\n

Nejvlivn\u011bj\u0161\u00edm parametrem pro hluk v z\u00e1b\u011bru \u0161nekov\u00e9ho p\u0159evodu je pokryt\u00ed kontaktn\u00edho vzoru \u2013 procento \u0161\u00ed\u0159ky \u010deln\u00ed plochy zubu, nad kter\u00fdm je z\u00e1vit \u0161neku a zub kola v kontaktu b\u011bhem z\u00e1b\u011bru. Pln\u00fd kontaktn\u00ed vzor (\u0161\u00ed\u0159ka \u010deln\u00ed plochy 70% nebo v\u011bt\u0161\u00ed) rozkl\u00e1d\u00e1 zat\u00ed\u017een\u00ed z\u00e1b\u011bru po cel\u00e9 z\u00f3n\u011b z\u00e1b\u011bru, \u010d\u00edm\u017e sni\u017euje \u0161pi\u010dkov\u00e9 Hertzovo kontaktn\u00ed nap\u011bt\u00ed a vytv\u00e1\u0159\u00ed plynulou, kontinu\u00e1ln\u00ed zm\u011bnu s\u00edly na frekvenci z\u00e1b\u011bru \u2013 co\u017e generuje akustick\u00fd v\u00fdstup s n\u00edzkou amplitudou a n\u00edzk\u00fdmi frekvencemi.<\/p>\n

Bodov\u00fd kontaktn\u00ed vzor \u2013 ke kter\u00e9mu doch\u00e1z\u00ed, kdy\u017e je \u0161nekov\u00e9 kolo odvalov\u00e1no s neodpov\u00eddaj\u00edc\u00edm profilem fr\u00e9zy \u2013 koncentruje pln\u00e9 zat\u00ed\u017een\u00ed z\u00e1b\u011bru na malou plochu, co\u017e p\u0159i ka\u017ed\u00e9m z\u00e1b\u011bru zubu vytv\u00e1\u0159\u00ed kr\u00e1tkodob\u00fd silov\u00fd hrot s vysokou amplitudou. Hrot generuje siln\u00e9 harmonick\u00e9 s 2x, 3x a 4x frekvenc\u00ed z\u00e1b\u011bru, a to krom\u011b z\u00e1kladn\u00ed frekvence. Tyto harmonick\u00e9 spadaj\u00ed do rozsahu 100\u2013400 Hz pro typick\u00e9 pr\u016fmyslov\u00e9 pohony \u2013 p\u0159\u00edmo do vrcholu akustick\u00e9 citlivosti lidsk\u00e9ho ucha, tak\u017ee jsou vn\u00edmateln\u00e9 p\u0159i ni\u017e\u0161\u00ed amplitud\u011b ne\u017e samotn\u00e1 z\u00e1kladn\u00ed frekvence.<\/p>\n

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Kontaktn\u00ed vzor vs. hladina \u0161umu \u2013 shrnut\u00ed<\/div>\n
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>=70%<\/div>\n
N\u00edzk\u00e1 hlu\u010dnost<\/div>\n
Spr\u00e1vn\u00fd kontakt (linkov\u00fd kontakt)<\/div>\n<\/div>\n
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50-70%<\/div>\n
M\u00edrn\u00fd hluk<\/div>\n
Okrajov\u00fd kontakt nebo kontakt na vstupn\u00ed stran\u011b<\/div>\n<\/div>\n
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30-50%<\/div>\n
Vysok\u00fd hluk<\/div>\n
V\u00fdznamn\u00fd nesoulad, bodov\u00fd kontakt<\/div>\n<\/div>\n
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<30%<\/div>\n
Velmi vysok\u00fd hluk<\/div>\n
Z\u00e1va\u017en\u00fd nesoulad, dominovan\u00fd dopadem<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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In\u017een\u00fdrsk\u00fd \u0161um se eliminuje ve f\u00e1zi n\u00e1vrhu<\/h2>\n
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Pou\u017eijte v\u011bt\u0161\u00ed modul<\/h4>\n

V\u011bt\u0161\u00ed modul = v\u011bt\u0161\u00ed pr\u016f\u0159ez zubu = ni\u017e\u0161\u00ed kontaktn\u00ed nap\u011bt\u00ed zubu p\u0159i stejn\u00e9m zat\u00ed\u017een\u00ed = ni\u017e\u0161\u00ed amplituda kol\u00eds\u00e1n\u00ed s\u00edly v z\u00e1b\u011bru = ni\u017e\u0161\u00ed akustick\u00fd v\u00fdstup. Jednostup\u0148ov\u00e9 zv\u00fd\u0161en\u00ed modulu (nap\u0159. z M4 na M5) p\u0159i stejn\u00e9m zat\u00ed\u017een\u00ed sni\u017euje kol\u00eds\u00e1n\u00ed s\u00edly v z\u00e1b\u011bru p\u0159ibli\u017en\u011b o 301 TP3T. Ozuben\u00e9 kolo je v\u011bt\u0161\u00ed a t\u011b\u017e\u0161\u00ed, ale p\u0159i stejn\u00e9m zat\u00ed\u017een\u00ed je v\u00fdrazn\u011b ti\u0161\u0161\u00ed.<\/p>\n<\/div>\n

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Uve\u010fte DIN 7 nebo lep\u0161\u00ed<\/h4>\n

Brou\u0161en\u00ed z\u00e1vit\u016f podle normy DIN 7 odstra\u0148uje odchylku profilu (Ff), kter\u00e1 je prim\u00e1rn\u00edm zdrojem harmonick\u00fdch slo\u017eek v z\u00e1b\u011brov\u00e9 frekvenci. Zlep\u0161en\u00ed hluku je nejv\u00fdrazn\u011bj\u0161\u00ed ve frekven\u010dn\u00edm rozsahu 100\u2013500 Hz. Ozuben\u00e9 kolo dle normy DIN 7 je p\u0159i stejn\u00e9m zat\u00ed\u017een\u00ed a ot\u00e1\u010dk\u00e1ch obvykle o 8\u201312 dB(A) ti\u0161\u0161\u00ed ne\u017e stejn\u00e9 ozuben\u00e9 kolo dle normy DIN 9. Cenov\u00e1 p\u0159ir\u00e1\u017eka pro DIN 7 oproti DIN 9 je p\u0159ibli\u017en\u011b 40-60%.<\/p>\n<\/div>\n

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Odvalovac\u00ed fr\u00e9zov\u00e1n\u00ed s odpov\u00eddaj\u00edc\u00edm profilem<\/h4>\n

Specifikace \u0161nekov\u00e9ho kola s odvalovac\u00ed fr\u00e9zou odpov\u00eddaj\u00edc\u00ed skute\u010dn\u00e9 geometrii \u0161neku (ne standardn\u00ed univerz\u00e1ln\u00ed fr\u00e9za) vytv\u00e1\u0159\u00ed liniov\u00fd kontakt m\u00edsto bodov\u00e9ho. To je dolo\u017eeno fotografi\u00ed kontaktn\u00edho vzoru v dodac\u00ed dokumentaci. Kontaktn\u00ed vzor >=70% v porovn\u00e1n\u00ed se vzorem 30-40% sni\u017euje hluk s\u00edt\u011b o 5-10 dB(A) \u2013 co\u017e je srovnateln\u00e9 se zlep\u0161en\u00edm t\u0159\u00eddy p\u0159esnosti.<\/p>\n<\/div>\n

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Mazivo PAO<\/h4>\n

Syntetick\u00fd olej PAO si udr\u017euje vy\u0161\u0161\u00ed viskozitu p\u0159i provozn\u00ed teplot\u011b ne\u017e miner\u00e1ln\u00ed olej stejn\u00e9 t\u0159\u00eddy ISO VG. Vy\u0161\u0161\u00ed provozn\u00ed viskozita znamen\u00e1 siln\u011bj\u0161\u00ed elastohydrodynamick\u00fd film v m\u00edst\u011b kontaktu kovu, co\u017e sni\u017euje kontaktn\u00ed plochu kovu na kov, sni\u017euje t\u0159en\u00ed drsnosti a sni\u017euje hluk \u0161irokop\u00e1smov\u00e9ho maz\u00e1n\u00ed na hranic\u00edch p\u00e1s\u016f. Toto zlep\u0161en\u00ed je nejv\u00fdznamn\u011bj\u0161\u00ed u pohon\u016f pracuj\u00edc\u00edch v bl\u00edzkosti jejich tepeln\u00e9ho limitu, kde viskozita miner\u00e1ln\u00edho oleje podstatn\u011b klesla.<\/p>\n<\/div>\n

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Mont\u00e1\u017e tlumen\u00e9ho pouzdra<\/h4>\n

Pouzdro p\u0159en\u00e1\u0161\u00ed vibrace ozuben\u00e9ho kola na konstrukci, na kter\u00e9 je namontov\u00e1no. Pru\u017en\u00e9 antivibra\u010dn\u00ed podlo\u017eky mezi pouzdrem a r\u00e1mem stroje sni\u017euj\u00ed p\u0159enos hluku \u0161\u00ed\u0159en\u00e9ho konstrukc\u00ed o 6\u201315 dB(A) v z\u00e1vislosti na tuhosti podlo\u017eky a rezonan\u010dn\u00edch frekvenc\u00edch konstrukce. \u0160rouby pouzdra mus\u00ed b\u00fdt st\u00e1le spr\u00e1vn\u011b uta\u017eeny \u2013 pru\u017en\u00e9 podlo\u017eky zaji\u0161\u0165uj\u00ed izolaci vibrac\u00ed, nikoli sn\u00ed\u017een\u00ed amplitudy s\u00edly ozuben\u00e9ho kola.<\/p>\n<\/div>\n

\n

Nylonov\u00e9 nebo POM kolo (lehk\u00e9)<\/h4>\n

Pro aplikace s velmi n\u00edzk\u00fdm zat\u00ed\u017een\u00edm (pohony instrumentace, aplik\u00e1tory etiket mal\u00e9ho form\u00e1tu, laboratorn\u00ed polohov\u00e1n\u00ed) sni\u017euje kotou\u010d z nylonu PA66 nebo POM acetalu, kter\u00fd se ot\u00e1\u010d\u00ed po le\u0161t\u011bn\u00e9 ocelov\u00e9 \u0161nekov\u00e9 h\u0159\u00eddeli, hluk v z\u00e1b\u011bru o 10\u201318 dB(A) ve srovn\u00e1n\u00ed s kontaktem kov na kov. Nev\u00fdhodou je omezen\u00fd kroutic\u00ed moment p\u0159ibli\u017en\u011b na modul M2 p\u0159i n\u00edzk\u00e9m zat\u00ed\u017een\u00ed. Nepou\u017e\u00edvejte plastov\u00e1 kotou\u010de jako \u0159e\u0161en\u00ed hluku pro aplikace se st\u0159edn\u00edm nebo vysok\u00fdm zat\u00ed\u017een\u00edm \u2013 mechanicky sel\u017eou.<\/p>\n<\/div>\n<\/div>\n

\n

V\u00fdrobn\u00ed postupy, kter\u00e9 ovliv\u0148uj\u00ed hlu\u010dnost<\/h2>\n\n\n\n\n
\"\"<\/td>\n\"\"<\/td>\n\"\"<\/td>\n<\/tr>\n
\"\"<\/td>\n\"\"<\/td>\n\"\"<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Co lze ud\u011blat po instalaci \u2013 Sn\u00ed\u017een\u00ed hluku po uveden\u00ed do provozu<\/h2>\n

Pokud je \u0161nekov\u00fd p\u0159evod ji\u017e nainstalov\u00e1n a produkuje nep\u0159ijateln\u00fd hluk, mo\u017enosti jsou omezeny t\u00edm, co lze zm\u011bnit bez v\u011bt\u0161\u00ed demont\u00e1\u017ee. Prioritn\u00ed po\u0159ad\u00ed: nejprve ov\u011b\u0159te zdroj (je to z\u00e1b\u011br ozuben\u00e9ho kola, lo\u017eiska nebo konstrukce?), pot\u00e9 pou\u017eijte nej\u00fa\u010dinn\u011bj\u0161\u00ed dostupn\u00e9 \u0159e\u0161en\u00ed.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
Z\u00e1sah<\/th>\n\u00dasil\u00ed<\/th>\nPotenci\u00e1l redukce hluku<\/th>\nKdy pou\u017e\u00edt<\/th>\n<\/tr>\n<\/thead>\n
P\u0159ejd\u011bte na syntetick\u00e9 mazivo PAO<\/td>\nN\u00edzk\u00e1 \u2013 pouze vypu\u0161t\u011bn\u00ed a dopln\u011bn\u00ed oleje<\/td>\n2\u20136 dB(A) v teplotn\u011b citliv\u00fdch pohonech<\/td>\nKdy\u017e je hluk hor\u0161\u00ed v teple ne\u017e v chladu<\/td>\n<\/tr>\n
Zv\u00fd\u0161en\u00ed stupn\u011b viskozity maziva<\/td>\nN\u00edzk\u00e1 \u2013 pouze vypu\u0161t\u011bn\u00ed a dopln\u011bn\u00ed oleje<\/td>\n2\u20135 dB(A), pokud je aktu\u00e1ln\u011b nedostate\u010dn\u011b visk\u00f3zn\u00ed<\/td>\nKdy\u017e je p\u0159\u00edtomno \u0161irokop\u00e1smov\u00e9 sy\u010den\u00ed<\/td>\n<\/tr>\n
P\u0159idejte odoln\u00e9 antivibra\u010dn\u00ed \u00fachyty<\/td>\nSt\u0159edn\u00ed \u2013 nutn\u00e1 demont\u00e1\u017e pouzdra<\/td>\nSn\u00ed\u017een\u00ed hluku \u0161\u00ed\u0159en\u00e9ho strukturou o 6\u201315 dB(A)<\/td>\nKdy\u017e hluk vyza\u0159uje z konstrukce, nikoli z p\u0159evodovky<\/td>\n<\/tr>\n
Vym\u011b\u0148te ozuben\u00e9 kolo za p\u0159esn\u00e9 ozuben\u00e9 kolo dle DIN 7<\/td>\nVysok\u00e1 \u2013 kompletn\u00ed demont\u00e1\u017e<\/td>\n\u0160um s\u00ed\u0165ov\u00e9 frekvence 8\u201314 dB(A)<\/td>\nPokud je prim\u00e1rn\u00ed st\u00ed\u017enost\u00ed t\u00f3nov\u00fd \u0161um s\u00ed\u0165ov\u00e9 frekvence<\/td>\n<\/tr>\n
Vym\u011b\u0148te ozuben\u00e9 kolo za kolo s odpov\u00eddaj\u00edc\u00edm profilem<\/td>\nVysok\u00e1 \u2013 kompletn\u00ed demont\u00e1\u017e<\/td>\nCelkem 5\u201310 dB(A)<\/td>\nPokud fotografie kontaktn\u00edho vzoru ukazuje pokryt\u00ed <50%<\/td>\n<\/tr>\n
Vym\u011b\u0148te soukol\u00ed za v\u011bt\u0161\u00ed modul<\/td>\nVysok\u00e1 \u2013 \u00faprava bydlen\u00ed je pravd\u011bpodobn\u00e1<\/td>\nA\u017e 10 dB(A) p\u0159i stejn\u00e9m zat\u00ed\u017een\u00ed<\/td>\nPokud je hluk \u00fam\u011brn\u00fd z\u00e1t\u011b\u017ei a prostor v budov\u011b to umo\u017e\u0148uje<\/td>\n<\/tr>\n
Vym\u011b\u0148te lo\u017eiska<\/td>\nSt\u0159edn\u00ed \u2013 \u010d\u00e1ste\u010dn\u00e1 demont\u00e1\u017e<\/td>\nEliminuje hlukovou slo\u017eku lo\u017eiska<\/td>\nPokud je periodick\u00e9 klep\u00e1n\u00ed potvrzeno jako frekvence vady lo\u017eiska<\/td>\n<\/tr>\n
Vym\u011b\u0148te za nylonov\u00e9\/POM kolo (pouze pro lehk\u00e9 zat\u00ed\u017een\u00ed)<\/td>\nSt\u0159edn\u00ed \u2013 v\u00fdm\u011bna kola<\/td>\n10\u201318 dB(A), pokud to zat\u00ed\u017een\u00ed dovol\u00ed<\/td>\nPouze pro velmi lehk\u00e9 zat\u00ed\u017een\u00ed \u2013 ov\u011b\u0159te utahovac\u00ed moment v r\u00e1mci limitu plasticity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
\n
\n
Korea Ever-Power<\/span><\/p>\n

Produkty pro tich\u00fd provoz \u0161nekov\u00fdch p\u0159evod\u016f<\/h2>\n<\/div>\n
\n
\n
\"\u0160nekov\u00e9<\/div>\n
\n
P\u0159esnost DIN 7 \u2013 z\u00e1vit brou\u0161en\u00fd pro n\u00edzkou hlu\u010dnost<\/div>\n
\u0160nekov\u00e9 p\u0159evodovky z legovan\u00e9 oceli \u2013 specifikace optimalizovan\u00e1 pro hluk<\/div>\n
Pro aplikace, kde je hluk \u0161nekov\u00fdch p\u0159evod\u016f prim\u00e1rn\u00edm konstruk\u010dn\u00edm omezen\u00edm \u2013 pracovn\u00ed prostory kolaborativn\u00edch robot\u016f, automatizace kancel\u00e1\u0159\u00ed a nemocnic, p\u0159esn\u00e9 laboratorn\u00ed p\u0159\u00edstroje a tich\u00e1 v\u00fdrobn\u00ed prost\u0159ed\u00ed \u2013 dod\u00e1v\u00e1 spole\u010dnost Korea Ever-Power standardn\u011b sady \u0161nekov\u00fdch p\u0159evod\u016f z legovan\u00e9 oceli s t\u0159\u00eddou p\u0159esnosti DIN 7 (brou\u0161en\u00e9 boky z\u00e1vitu, odchylka profilu Ff =70%, kter\u00e9 je prim\u00e1rn\u00edm prediktorem n\u00edzk\u00e9ho hluku v z\u00e1b\u011bru. Pro aplikace vy\u017eaduj\u00edc\u00ed je\u0161t\u011b ni\u017e\u0161\u00ed hluk je na vy\u017e\u00e1d\u00e1n\u00ed k dispozici DIN 6 (Ff <=6 um). Fotografie kontaktn\u00edho vzoru, kter\u00e1 je sou\u010d\u00e1st\u00ed sad DIN 7 a lep\u0161\u00edch, umo\u017e\u0148uje in\u017een\u00fdrovi kvality z\u00e1kazn\u00edka p\u0159\u00edmo ov\u011b\u0159it stav, kter\u00fd ur\u010duje hluk v z\u00e1b\u011bru, p\u0159ed instalac\u00ed.<\/div>\n

Zobrazit specifikace<\/a><\/p>\n<\/div>\n<\/div>\n

\n
\"Plastov\u00e1<\/div>\n
\n
PA66 \/ POM \u2014 Maxim\u00e1ln\u00ed \u00fatlum hluku pro lehk\u00e9 pou\u017eit\u00ed<\/div>\n
Plastov\u00e1 \u0161nekov\u00e1 p\u0159evodovka \u2013 t\u00e9m\u011b\u0159 tich\u00e1, lehk\u00e1<\/div>\n
Pro aplikace s velmi n\u00edzk\u00fdm zat\u00ed\u017een\u00edm (laboratorn\u00ed polohov\u00e1n\u00ed, instrumentace, aplik\u00e1tory etiket mal\u00e9ho form\u00e1tu, automatizace kancel\u00e1\u0159sk\u00fdch a zdravotnick\u00fdch prost\u0159edk\u016f), kde je nutn\u00e9 minimalizovat akustick\u00fd v\u00fdkon, zaji\u0161\u0165uj\u00ed \u0161nekov\u00e1 kola z nylonu PA66 nebo acetalu POM t\u00e9m\u011b\u0159 tich\u00fd provoz na \u00fakor kroutic\u00edho momentu. Kluzn\u00fd kontakt ocel-plast generuje podstatn\u011b men\u0161\u00ed akustick\u00fd v\u00fdkon ne\u017e kontakt ocel-bronz \u2013 obvykle o 10\u201318 dB(A) ti\u0161\u0161\u00ed p\u0159i stejn\u00e9 rychlosti a zat\u00ed\u017een\u00ed v rozsahu kroutic\u00edho momentu plastov\u00e9ho kola. \u0160nekov\u00e1 h\u0159\u00eddel je standardn\u011b brou\u0161ena a le\u0161t\u011bna na Ra <=0,8 um \u2013 drsn\u00fd povrch h\u0159\u00eddele v\u00fdrazn\u011b urychluje opot\u0159eben\u00ed plastov\u00e9ho kola. Nen\u00ed nutn\u00e9 maz\u00e1n\u00ed olejovou l\u00e1zn\u00ed; lehk\u00e9 plastick\u00e9 mazivo zaji\u0161\u0165uje dostate\u010dn\u00e9 maz\u00e1n\u00ed pro such\u00fd provoz a\u017e do 80 \u00b0C. Modul M0,5 a\u017e M4 pro rozsah n\u00edzk\u00e9ho zat\u00ed\u017een\u00ed.<\/div>\n

Zobrazit specifikace<\/a><\/p>\n<\/div>\n<\/div>\n

\n
\"Diagnostika<\/div>\n
\n
Vy\u0161et\u0159ov\u00e1n\u00ed hluku \u2014 Podpora aplikac\u00ed<\/div>\n
Diagnostika \u0161umu a kontrola specifikac\u00ed<\/div>\n
Pro \u0161nekov\u00e9 p\u0159evody, kter\u00e9 jsou ji\u017e v provozu a u kter\u00fdch se projevuje nep\u0159ijateln\u00fd hluk \u2013 nebo pro nov\u00e9 konstrukce stroj\u016f, u kter\u00fdch je hluk kritick\u00fdm krit\u00e9riem p\u0159ijet\u00ed \u2013 poskytuje spole\u010dnost Korea Ever-Power kontrolu specifikac\u00ed a diagnostiku hluku. Za\u0161lete rozm\u011bry soukol\u00ed, aktu\u00e1ln\u00ed t\u0159\u00eddu p\u0159esnosti (pokud je zn\u00e1ma), provozn\u00ed ot\u00e1\u010dky, zat\u00ed\u017een\u00ed, aktu\u00e1ln\u00ed mazivo a popis charakteru hluku (ton\u00e1ln\u00ed, \u0161irokop\u00e1smov\u00fd, p\u0159eru\u0161ovan\u00fd, \u00fam\u011brn\u00fd zat\u00ed\u017een\u00ed, \u00fam\u011brn\u00fd rychlosti). Spole\u010dnost Korea Ever-Power vypo\u010d\u00edt\u00e1 s\u00ed\u0165ovou frekvenci, identifikuje pravd\u011bpodobn\u00e9 zdroje hluku z popisu a doporu\u010d\u00ed zm\u011bnu specifikace, kter\u00e1 s nejv\u011bt\u0161\u00ed pravd\u011bpodobnost\u00ed probl\u00e9m vy\u0159e\u0161\u00ed. Tato slu\u017eba je poskytov\u00e1na zdarma pro objedn\u00e1vky n\u00e1hradn\u00edch d\u00edl\u016f a pro dotazy t\u00fdkaj\u00edc\u00ed se konstrukce nov\u00fdch stroj\u016f.<\/div>\n

Zobrazit specifikace<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

\n
\n

\u010casto kladen\u00e9 ot\u00e1zky k hluku<\/span><\/p>\n

Hluk a vibrace \u0161nekov\u00fdch p\u0159evod\u016f \u2013 ot\u00e1zky od strojn\u00edch a akustick\u00fdch in\u017een\u00fdr\u016f<\/h2>\n<\/div>\n
\nM\u016fj \u0161nekov\u00fd p\u0159evod je nyn\u00ed hlasit\u011bj\u0161\u00ed ne\u017e p\u0159i jeho instalaci p\u0159ed \u0161esti m\u011bs\u00edci. Co zp\u016fsobuje zv\u00fd\u0161en\u00fd hluk?+<\/span><\/summary>\n
\n

Postupn\u00e9 zvy\u0161ov\u00e1n\u00ed hluku v pohonu \u0161nekov\u00e9ho p\u0159evodu v pr\u016fb\u011bhu m\u011bs\u00edc\u016f t\u00e9m\u011b\u0159 v\u017edy nazna\u010duje jeden ze t\u0159\u00ed proces\u016f: (1) Abrazivn\u00ed opot\u0159eben\u00ed \u2013 \u010d\u00e1stice z po\u010d\u00e1te\u010dn\u00edho provozu nebyly odstran\u011bny p\u0159i v\u00fdm\u011bn\u011b oleje po 50\u2013100 hodin\u00e1ch (kterou mnoho za\u0159\u00edzen\u00ed vynech\u00e1v\u00e1) a postupn\u011b obru\u0161uj\u00ed boky zub\u016f, \u010d\u00edm\u017e se zvy\u0161uje odchylka profilu a hluk v z\u00e1b\u011bru. (2) Degradace maz\u00e1n\u00ed \u2013 p\u016fvodn\u00ed olej nahromadil kovov\u00e9 \u010d\u00e1stice a oxida\u010dn\u00ed produkty, kter\u00e9 zvy\u0161uj\u00ed t\u0159en\u00ed a hluk v z\u00e1b\u011bru. (3) Opot\u0159eben\u00ed lo\u017eisek \u2013 valiv\u00e1 lo\u017eiska v h\u0159\u00eddeli \u0161nekov\u00e9ho p\u0159evodu nebo h\u0159\u00eddeli kola doch\u00e1z\u00ed k \u00fanavov\u00e9mu odlupov\u00e1n\u00ed. Pro rozli\u0161en\u00ed: pokud je n\u00e1r\u016fst hluku plynul\u00fd, postupn\u00fd n\u00e1r\u016fst \u00fam\u011brn\u00fd zat\u00ed\u017een\u00ed a rychlosti, je pravd\u011bpodobn\u00e9 (1) nebo (2). Pokud se hluk vyvinul do periodick\u00e9ho klep\u00e1n\u00ed nebo cvak\u00e1n\u00ed, je pravd\u011bpodobn\u00e9 (3). Nejprve vypus\u0165te a vym\u011b\u0148te olej \u2013 pokud se hluk po v\u00fdm\u011bn\u011b oleje a 2 hodin\u00e1ch provozu nesn\u00ed\u017e\u00ed, pokra\u010dujte v kontrole lo\u017eiska.<\/p>\n<\/div>\n<\/details>\n

\nMohu m\u011b\u0159it hluk \u0161nekov\u00e9ho p\u0159evodu pomoc\u00ed chytr\u00e9ho telefonu a je to dostate\u010dn\u011b spolehliv\u00e9 pro diagnostiku probl\u00e9m\u016f?+<\/span><\/summary>\n
\n

Ano, s pat\u0159i\u010dnou opatrnost\u00ed. Modern\u00ed chytr\u00e9 telefony obsahuj\u00ed akcelerometry a mikrofony MEMS, kter\u00e9 jsou dosta\u010duj\u00edc\u00ed pro detekci frekven\u010dn\u00edho obsahu v rozsahu 20\u20132 000 Hz \u2013 co\u017e pokr\u00fdv\u00e1 v\u0161echny frekvence z\u00e1b\u011bru ozuben\u00fdch kol pro typick\u00e9 pr\u016fmyslov\u00e9 pohony. Bezplatn\u00e9 aplikace pro analyz\u00e1tor vibrac\u00ed a FFT (rychl\u00e1 Fourierova transformace) jsou k dispozici pro iOS i Android. M\u011b\u0159en\u00ed je neju\u017eite\u010dn\u011bj\u0161\u00ed pro identifikaci periodick\u00fdch frekvenc\u00ed: ostr\u00fd vrchol ve spektru FFT na zn\u00e1m\u00e9 frekvenci (vypo\u010d\u00edtan\u00e1 frekvence s\u00edt\u011b, frekvence defektu lo\u017eiska nebo frekvence ot\u00e1\u010den\u00ed h\u0159\u00eddele) je spolehliv\u00fdm indik\u00e1torem i p\u0159i m\u011b\u0159en\u00ed v kvalit\u011b chytr\u00e9ho telefonu. Omezen\u00ed: m\u011b\u0159en\u00ed absolutn\u00ed amplitudy je nespolehliv\u00e9 (um\u00edst\u011bn\u00ed a propojen\u00ed chytr\u00e9ho telefonu ovliv\u0148uj\u00ed ode\u010det); velmi n\u00edzkofrekven\u010dn\u00ed obsah (pod 20 Hz) nen\u00ed zachycen; a m\u011b\u0159en\u00ed vy\u017eaduje, aby byl chytr\u00fd telefon v kontaktu s pouzdrem nebo mont\u00e1\u017en\u00ed konstrukc\u00ed, nikoli ve vzduchu.<\/p>\n<\/div>\n<\/details>\n

\nHluk z na\u0161eho \u0161nekov\u00e9ho p\u0159evodov\u00e9ho pohonu je jednozna\u010dn\u011b \u00fam\u011brn\u00fd zat\u00ed\u017een\u00ed \u2013 zvy\u0161uje se, kdy\u017e je dopravn\u00edk nalo\u017een, a sni\u017euje se, kdy\u017e je napr\u00e1zdno. Co to zp\u016fsobuje?+<\/span><\/summary>\n
\n

Hluk \u00fam\u011brn\u00fd zat\u00ed\u017een\u00ed v pohonu \u0161nekov\u00fdm p\u0159evodem m\u00e1 dv\u011b hlavn\u00ed p\u0159\u00ed\u010diny. Prvn\u00ed je jednodu\u0161e to, \u017ee vy\u0161\u0161\u00ed zat\u00ed\u017een\u00ed produkuje vy\u0161\u0161\u00ed kontaktn\u00ed s\u00edlu v z\u00e1b\u011bru, kter\u00e1 generuje akustick\u00fd v\u00fdstup s vy\u0161\u0161\u00ed amplitudou na frekvenci z\u00e1b\u011bru \u2013 to je norm\u00e1ln\u00ed chov\u00e1n\u00ed a neznamen\u00e1 probl\u00e9m, pokud absolutn\u00ed hladina hluku nen\u00ed nep\u0159ijateln\u00e1. Druh\u00e1 p\u0159\u00ed\u010dina, kter\u00e1 nazna\u010duje probl\u00e9m se specifikac\u00ed: nedostate\u010dn\u00fd kontaktn\u00ed vzor (men\u0161\u00ed ne\u017e pokryt\u00ed \u0161\u00ed\u0159ky \u010dela 70%) koncentruje zat\u00ed\u017een\u00ed z\u00e1b\u011bru na malou plochu zubu. P\u0159i lehk\u00e9m zat\u00ed\u017een\u00ed je kontaktn\u00ed s\u00edla dostate\u010dn\u011b n\u00edzk\u00e1, tak\u017ee i mal\u00e1 kontaktn\u00ed plocha generuje p\u0159ijateln\u00fd hluk. P\u0159i pln\u00e9m zat\u00ed\u017een\u00ed je stejn\u00e1 mal\u00e1 kontaktn\u00ed plocha siln\u011b nam\u00e1h\u00e1na, co\u017e produkuje silov\u00e9 \u0161pi\u010dky s vysokou amplitudou v ka\u017ed\u00e9m z\u00e1b\u011bru zubu \u2013 kter\u00e9 vyza\u0159uj\u00ed jako \u0161um \u00fam\u011brn\u00fd zat\u00ed\u017een\u00ed na frekvenci z\u00e1b\u011bru. Pro rozli\u0161en\u00ed norm\u00e1ln\u00edho \u0161umu \u00fam\u011brn\u00e9ho zat\u00ed\u017een\u00ed od hluku vyvolan\u00e9ho kontaktn\u00edm vzorem porovnejte m\u00edru n\u00e1r\u016fstu hluku: pokud zdvojn\u00e1soben\u00ed zat\u00ed\u017een\u00ed zdvojn\u00e1sob\u00ed amplitudu hluku (n\u00e1r\u016fst o 6 dB), jedn\u00e1 se o norm\u00e1ln\u00ed \u0161k\u00e1lov\u00e1n\u00ed s\u00edly a amplitudy. Pokud se hluk zvy\u0161uje v\u00edce ne\u017e \u00fam\u011brn\u011b zat\u00ed\u017een\u00ed, je pravd\u011bpodobnou p\u0159\u00ed\u010dinou nedostate\u010dn\u00fd kontaktn\u00ed vzor.<\/p>\n<\/div>\n<\/details>\n

\nNavrhujeme \u0161nekov\u00fd p\u0159evodov\u00fd pohon pro kancel\u00e1\u0159sk\u00e9 prost\u0159ed\u00ed, kde hlu\u010dnost mus\u00ed z\u016fstat pod 60 dB(A) ve vzd\u00e1lenosti 1 metru. Je to dosa\u017eiteln\u00e9?+<\/span><\/summary>\n
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Pro \u0161nekov\u00fd p\u0159evodov\u00fd pohon p\u0159i n\u00edzk\u00e9m a\u017e st\u0159edn\u00edm zat\u00ed\u017een\u00ed a ot\u00e1\u010dk\u00e1ch je dosa\u017eiteln\u00e1 hladina hluku 60 dB(A) ve vzd\u00e1lenosti 1 metru od sk\u0159\u00edn\u011b p\u0159evodovky. Dosa\u017eitelnost z\u00e1vis\u00ed p\u0159edev\u0161\u00edm na t\u0159ech parametrech: (1) Velikost modulu \u2013 men\u0161\u00ed modul produkuje ni\u017e\u0161\u00ed frekvenci z\u00e1b\u011bru a ni\u017e\u0161\u00ed akustick\u00fd v\u00fdstup p\u0159i stejn\u00e9m pom\u011bru zat\u00ed\u017een\u00ed; (2) T\u0159\u00edda p\u0159esnosti \u2013 soukol\u00ed se z\u00e1vitem DIN 7 s dokumentovan\u00fdm kontaktn\u00edm vzorem >=70% je obvykle o 8\u201314 dB(A) ti\u0161\u0161\u00ed ne\u017e DIN 9 p\u0159i stejn\u00e9m zat\u00ed\u017een\u00ed; (3) Uzav\u0159en\u00e1 sk\u0159\u00ed\u0148 \u2013 sk\u0159\u00ed\u0148 v olejov\u00e9 l\u00e1zni bez akustick\u00fdch p\u0159enosov\u00fdch cest do konstrukce stroje poskytuje o 6\u201310 dB(A) dodate\u010dnou izolaci hluku ve srovn\u00e1n\u00ed s odkrytou soukol\u00ed. Pro velmi citliv\u00e1 akustick\u00e1 prost\u0159ed\u00ed (l\u00e9ka\u0159sk\u00e9 ordinace, koncertn\u00ed s\u00e1ly, nahr\u00e1vac\u00ed studia) specifikujte soukol\u00ed DIN 6 nebo DIN 7 s nylonov\u00fdm kolem PA66, pokud to kroutic\u00ed moment dovol\u00ed, mazivo PAO, odoln\u00e9 antivibra\u010dn\u00ed \u00fachyty a akustickou p\u011bnovou v\u00fdstelku na vnit\u0159n\u00ed stran\u011b sk\u0159\u00edn\u011b.<\/p>\n<\/div>\n<\/details>\n

\nJak\u00fd je rozd\u00edl mezi hlukem \u0161\u00ed\u0159en\u00fdm vzduchem a hlukem \u0161\u00ed\u0159en\u00fdm konstrukc\u00ed ze \u0161nekov\u00e9ho p\u0159evodu a pro\u010d je to d\u016fle\u017eit\u00e9?+<\/span><\/summary>\n
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Vzduchov\u00fd hluk jsou akustick\u00e9 tlakov\u00e9 vlny \u0161\u00ed\u0159\u00edc\u00ed se p\u0159\u00edmo ze sk\u0159\u00edn\u011b p\u0159evodovky vzduchem k poslucha\u010di. Hluk \u0161\u00ed\u0159en\u00fd strukturou je vibra\u010dn\u00ed energie proch\u00e1zej\u00edc\u00ed konstrukc\u00ed stroje \u2013 mont\u00e1\u017en\u00edmi \u0161rouby, prvky r\u00e1mu, panely \u2013 a vyza\u0159uj\u00edc\u00ed jako akustick\u00e1 energie z v\u011bt\u0161\u00ed plochy d\u00e1le od p\u0159evodu. Toto rozli\u0161en\u00ed je d\u016fle\u017eit\u00e9, proto\u017ee n\u00e1prava je jin\u00e1. Vzduchov\u00fd hluk se sni\u017euje akustick\u00fdmi kryty kolem p\u0159evodu nebo sn\u00ed\u017een\u00edm zdroje hluku p\u0159evodu. Hluk \u0161\u00ed\u0159en\u00fd strukturou se sni\u017euje p\u0159eru\u0161en\u00edm cesty p\u0159enosu vibrac\u00ed mezi sk\u0159\u00edn\u00ed p\u0159evodovky a vyza\u0159uj\u00edc\u00ed konstrukc\u00ed \u2013 pou\u017eit\u00edm pru\u017en\u00fdch antivibra\u010dn\u00edch \u00fachyt\u016f, pru\u017en\u00fdch spojek nebo akustick\u00fdch tlumic\u00edch podlo\u017eek. V praxi je v\u011bt\u0161ina st\u00ed\u017enost\u00ed na hluk \u0161nekov\u00fdch p\u0159evod\u016f v pr\u016fmyslov\u00fdch stroj\u00edch dominov\u00e1na hlukem \u0161\u00ed\u0159en\u00fdm strukturou \u2013 sk\u0159\u00ed\u0148 p\u0159evodovky je spojena s r\u00e1mem stroje pomoc\u00ed pevn\u00fdch \u0161roub\u016f a cel\u00fd panel stroje se st\u00e1v\u00e1 velkoplo\u0161n\u00fdm z\u00e1\u0159i\u010dem na frekvenci s\u00edt\u011b.<\/p>\n<\/div>\n<\/details>\n

\nN\u00e1\u0161 \u0161nekov\u00fd p\u0159evod vyd\u00e1v\u00e1 p\u0159i ur\u010dit\u00fdch ot\u00e1\u010dk\u00e1ch motoru vysok\u00fd zvuk, ale p\u0159i jin\u00fdch ne. Co to zp\u016fsobuje a jak to napravit?+<\/span><\/summary>\n
\n

Hluk, kter\u00fd je v\u00fdrazn\u00fd pouze p\u0159i jedn\u00e9 specifick\u00e9 provozn\u00ed rychlosti, ale nikoli p\u0159i jin\u00fdch, je charakteristick\u00fd pro struktur\u00e1ln\u00ed rezonanci. P\u0159i specifick\u00e9 rychlosti se s\u00ed\u0165ov\u00e1 frekvence (f_mesh = n_worm x z1 \/ 60) shoduje s vlastn\u00ed frekvenc\u00ed sk\u0159\u00edn\u011b, mont\u00e1\u017en\u00ed konstrukce nebo panelu stroje. P\u0159i t\u00e9to frekvenci konstrukce zesiluje vibrace s\u00edly z\u00e1b\u011bru ozuben\u00fdch kol a hlasit\u011b je vyza\u0159uje. \u0158e\u0161en\u00ed v po\u0159ad\u00ed snadn\u00e9 implementace: (1) M\u00edrn\u011b zm\u011b\u0148te provozn\u00ed rychlost (i 3-5%), abyste odladili s\u00ed\u0165ovou frekvenci od struktur\u00e1ln\u00ed rezonance \u2013 pokud se pou\u017e\u00edv\u00e1 pohon s prom\u011bnn\u00fdmi ot\u00e1\u010dkami, jedn\u00e1 se o zm\u011bnu parametru regul\u00e1toru; (2) P\u0159idejte hmotu nebo v\u00fdztuhu k rezonuj\u00edc\u00ed struktu\u0159e, abyste posunuli jej\u00ed vlastn\u00ed frekvenci sm\u011brem od s\u00ed\u0165ov\u00e9 frekvence; (3) P\u0159idejte tlumen\u00ed (tlumic\u00ed materi\u00e1l s omezenou vrstvou) k rezonuj\u00edc\u00edmu panelu, abyste sn\u00ed\u017eili jeho odezvu p\u0159i rezonanci; (4) Zm\u011b\u0148te p\u0159evodov\u00fd pom\u011br, abyste dos\u00e1hli jin\u00e9 s\u00ed\u0165ov\u00e9 frekvence p\u0159i stejn\u00e9 provozn\u00ed rychlosti.<\/p>\n<\/div>\n<\/details>\n

\nJe norm\u00e1ln\u00ed, \u017ee je \u0161nekov\u00fd p\u0159evod hlu\u010dn\u011bj\u0161\u00ed za chladn\u00e9ho po\u010das\u00ed p\u0159i startov\u00e1n\u00ed?+<\/span><\/summary>\n
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Ano, a obvykle to nen\u00ed zn\u00e1mka probl\u00e9mu. Studen\u00fd miner\u00e1ln\u00ed p\u0159evodov\u00fd olej m\u00e1 mnohem vy\u0161\u0161\u00ed viskozitu ne\u017e p\u0159i provozn\u00ed teplot\u011b \u2013 miner\u00e1ln\u00ed olej ISO VG 460 m\u016f\u017ee b\u00fdt p\u0159i 5 \u00b0C 6\u20138kr\u00e1t visk\u00f3zn\u011bj\u0161\u00ed ne\u017e p\u0159i 40 \u00b0C. Tento vysoce visk\u00f3zn\u00ed studen\u00fd olej vytv\u00e1\u0159\u00ed zv\u00fd\u0161en\u00fd visk\u00f3zn\u00ed odpor, kdy\u017e se j\u00edm \u0161nekov\u00fd z\u00e1vit v\u00ed\u0159\u00ed, a produkuje n\u00edzkofrekven\u010dn\u00ed v\u00ed\u0159iv\u00fd hluk. Jak se sk\u0159\u00ed\u0148 zah\u0159\u00edv\u00e1 a viskozita oleje kles\u00e1 na sv\u016fj konstruk\u010dn\u00ed provozn\u00ed rozsah, hladina hluku se sni\u017euje. Pokud je hluk p\u0159i spou\u0161t\u011bn\u00ed v\u00ed\u0159iv\u00fd nebo bublav\u00fd a odezn\u00ed do 10\u201320 minut provozu, jedn\u00e1 se o norm\u00e1ln\u00ed chov\u00e1n\u00ed p\u0159i studen\u00e9m startu. Pokud je hluk p\u0159i spou\u0161t\u011bn\u00ed kovov\u00e9 klep\u00e1n\u00ed nebo sk\u0159\u00edp\u00e1n\u00ed, kter\u00e9 neodezn\u00ed ani po zah\u0159\u00e1t\u00ed, jedn\u00e1 se o jin\u00fd probl\u00e9m \u2013 zastavte motor a prove\u010fte pr\u016fzkum. Chcete-li eliminovat hluk p\u0159i studen\u00e9m startu: p\u0159ejd\u011bte z miner\u00e1ln\u00edho na syntetick\u00fd olej PAO, kter\u00fd m\u00e1 mnohem vy\u0161\u0161\u00ed index viskozity (VI > 150) a udr\u017euje si konzistentn\u011bj\u0161\u00ed viskozitu v cel\u00e9m rozsahu teplot od spou\u0161t\u011bn\u00ed do provozn\u00ed teploty.<\/p>\n<\/div>\n<\/details>\n

\nMus\u00edme spl\u0148ovat po\u017eadavky EU na emise hluku pro n\u00e1\u0161 stroj podle sm\u011brnice EU o strojn\u00edch za\u0159\u00edzen\u00edch. Jakou dokumentaci poskytuje spole\u010dnost Korea Ever-Power ohledn\u011b akustick\u00e9ho p\u0159\u00ednosu p\u0159evodovky?+<\/span><\/summary>\n
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Spole\u010dnost Korea Ever-Power neposkytuje data z akustick\u00fdch zkou\u0161ek pro p\u0159evodovky jako samostatn\u00e9 komponenty \u2013 akustick\u00fd v\u00fdstup z\u00e1vis\u00ed na cel\u00e9m stroji v\u010detn\u011b pouzdra, mont\u00e1\u017en\u00ed konstrukce, spojky a provozn\u00edch podm\u00ednek, nikoli na samotn\u00e9 p\u0159evodovce. Za dokumentaci o emis\u00edch hluku podle sm\u011brnice EU o strojn\u00edch za\u0159\u00edzen\u00edch (po\u017eadovanou podle p\u0159\u00edlohy I, odd\u00edlu 1.7.4) je odpov\u011bdnou osobou v\u00fdrobce stroje, nikoli dodavatel komponent p\u0159evodovky. Spole\u010dnost Korea Ever-Power m\u016f\u017ee podpo\u0159it posouzen\u00ed emis\u00ed hluku v\u00fdrobcem stroje poskytnut\u00edm: t\u0159\u00eddy p\u0159esnosti p\u0159evodovky (\u010d\u00edslo t\u0159\u00eddy DIN) a procentu\u00e1ln\u00edho pokryt\u00ed kontaktn\u00edho vzoru \u2013 oboj\u00ed je relevantn\u00ed pro predikci p\u0159\u00edsp\u011bvku hluku z\u00e1b\u011bru; doporu\u010den\u00e9 specifikace maziva \u2013 relevantn\u00ed pro p\u0159\u00edsp\u011bvku hluku maz\u00e1n\u00ed; a ve\u0161ker\u00fdch dat z hlukov\u00fdch zkou\u0161ek specifick\u00fdch pro danou aplikaci z p\u0159edchoz\u00edch instalac\u00ed stejn\u00e9 specifikace p\u0159evodovky, pokud jsou k dispozici z na\u0161ich z\u00e1znam\u016f o aplika\u010dn\u00edm in\u017een\u00fdrstv\u00ed. Vy\u017e\u00e1dejte si tyto informace p\u0159i zad\u00e1v\u00e1n\u00ed objedn\u00e1vky pro zahrnut\u00ed do technick\u00e9 dokumentace stroje.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

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Specifikujte ti\u0161\u0161\u00ed \u0161nekov\u00fd p\u0159evodov\u00fd pohon<\/h2>\n

Uve\u010fte provozn\u00ed rychlost, zat\u00ed\u017een\u00ed, aktu\u00e1ln\u00ed st\u00ed\u017enost na hluk, t\u0159\u00eddu p\u0159esnosti (pokud je zn\u00e1ma) a akustick\u00fd c\u00edl. Spole\u010dnost Korea Ever-Power identifikuje zm\u011bnu specifikace, kter\u00e1 s nejv\u011bt\u0161\u00ed pravd\u011bpodobnost\u00ed spln\u00ed po\u017eadavek na hluk, a do jednoho pracovn\u00edho dne v\u00e1m vr\u00e1t\u00ed potvrzenou cenovou nab\u00eddku.<\/p>\n

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Proch\u00e1zet p\u0159esn\u00e9 produkty<\/a><\/div>\n<\/div>\n<\/div>\n

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

Knowledge Series \u00b7 B9 \u00b7 Noise & Vibration Worm Gear Noise and Vibration — What the Sound Reveals and How to Engineer It Out A 91 Hz periodic knock that developed in a worm drive after three years of silent operation. The frequency alone identified the root cause without disassembly. Worm gear noise is not […]<\/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":[4774],"tags":[1394,1399],"class_list":["post-1922","post","type-post","status-publish","format-standard","hentry","category-worm-gear","tag-worm-gear","tag-worm-gear-worm"],"_links":{"self":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts\/1922","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/comments?post=1922"}],"version-history":[{"count":1,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts\/1922\/revisions"}],"predecessor-version":[{"id":1923,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/posts\/1922\/revisions\/1923"}],"wp:attachment":[{"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/media?parent=1922"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/categories?post=1922"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wormwheelgear.top\/cs\/wp-json\/wp\/v2\/tags?post=1922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}