{"id":15972,"date":"2026-09-04T08:51:36","date_gmt":"2026-09-04T08:51:36","guid":{"rendered":"https:\/\/www.hndfcrane.com\/?post_type=posts&#038;p=15972"},"modified":"2026-09-04T08:51:39","modified_gmt":"2026-09-04T08:51:39","slug":"overhead-crane-reducer-noise-gear-eccentricity-analysis-and-solutions","status":"publish","type":"posts","link":"https:\/\/www.hndfcrane.com\/cs\/posts\/overhead-crane-reducer-noise-gear-eccentricity-analysis-and-solutions\/","title":{"rendered":"Hluk reduktoru mostov\u00e9ho je\u0159\u00e1bu: Anal\u00fdza excentricity ozuben\u00e9ho kola a \u0159e\u0161en\u00ed"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Obsah<\/p><nav><ul><li><a href=\"#1-gear-excitation-analysis-under-eccentricity-error\">1 Anal\u00fdza buzen\u00ed ozuben\u00e9ho kola za chyby excentricity<\/a><ul><li><a href=\"#1-1-gear-pair-model\">1.1 Model p\u00e1ru ozuben\u00fdch kol<\/a><\/li><\/ul><\/li><li><a href=\"#2-numerical-calculation-of-gear-excitation-in-overhead-crane-reducer-noise\">2 Numerick\u00fd v\u00fdpo\u010det buzen\u00ed ozuben\u00e9ho kola v reduktoru mostov\u00e9ho je\u0159\u00e1bu<\/a><ul><li><a href=\"#2-1-vibration-differential-equation\">2.1 Vibra\u010dn\u00ed diferenci\u00e1ln\u00ed rovnice<\/a><\/li><li><a href=\"#2-2-vibration-analysis-results\">2.2 V\u00fdsledky vibra\u010dn\u00ed anal\u00fdzy<\/a><\/li><\/ul><\/li><li><a href=\"#3-radiated-noise-prediction-for-bogie-axle-bridge\">3 Predikce vyza\u0159ovan\u00e9ho hluku pro most s podvozkovou n\u00e1pravou<\/a><ul><li><a href=\"#3-1-acoustic-model\">3.1 Akustick\u00fd model<\/a><\/li><li><a href=\"#3-2-measures-to-reduce-abnormal-noise\">3.2 Opat\u0159en\u00ed ke sn\u00ed\u017een\u00ed abnorm\u00e1ln\u00edho hluku<\/a><\/li><\/ul><\/li><li><a href=\"#4-conclusion\">4 Z\u00e1v\u011br<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Hluk reduktoru mostov\u00e9ho je\u0159\u00e1bu se m\u016f\u017ee objevit b\u011bhem zved\u00e1n\u00ed a manipulace s materi\u00e1lem v d\u00edln\u00e1ch a ovlivnit tak b\u011b\u017en\u00fd provoz je\u0159\u00e1bu. Tento \u010dl\u00e1nek analyzuje abnorm\u00e1ln\u00ed hluk z hlediska chyby excentricity ozuben\u00fdch kol. Na z\u00e1klad\u011b v\u00fdsledk\u016f v\u00fdpo\u010dtu struktur\u00e1ln\u00edho hluku ze simula\u010dn\u00ed anal\u00fdzy tak\u00e9 uv\u00e1d\u00ed odpov\u00eddaj\u00edc\u00ed \u0159e\u0161en\u00ed jako referenci pro zlep\u0161en\u00ed. <a href=\"https:\/\/www.hndfcrane.com\/cs\/overhead-cranes\/\">mostov\u00fd je\u0159\u00e1b<\/a> provozn\u00ed v\u00fdkon.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Overhead-Crane-Reducer-Noise.png\" alt=\"\" class=\"wp-image-15994\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-gear-excitation-analysis-under-eccentricity-error\">1 Anal\u00fdza buzen\u00ed ozuben\u00e9ho kola za chyby excentricity<\/h2>\n\n\n\n<p>Mostov\u00fd je\u0159\u00e1b analyzovan\u00fd v tomto \u010dl\u00e1nku je model LD10 t-28,5 m, vybaven\u00fd t\u0159\u00edf\u00e1zov\u00fdm asynchronn\u00edm motorem o v\u00fdkonu 13 kW. Reduktor vyu\u017e\u00edv\u00e1 \u010dty\u0159stup\u0148ov\u00fd p\u0159evod se \u0161roubov\u00fdm ozuben\u00fdm kolem s paraleln\u00edmi h\u0159\u00eddeli. P\u0159i zohledn\u011bn\u00ed chyby excentricity anal\u00fdza nejprve za\u010d\u00edn\u00e1 s jedn\u00edm p\u00e1rem ozuben\u00fdch kol a d\u00e9lkou jeho z\u00e1b\u011brov\u00e9 linie.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-1-gear-pair-model\">1.1 Model p\u00e1ru ozuben\u00fdch kol<\/h3>\n\n\n\n<p>P\u0159i uva\u017eov\u00e1n\u00ed excentricity ozuben\u00e9ho kola se jako v\u00fdchoz\u00ed bod pou\u017e\u00edv\u00e1 excentricita hnac\u00edho a hnan\u00e9ho ozuben\u00e9ho kola. Na z\u00e1klad\u011b zn\u00e1m\u00e9ho po\u010dtu zub\u016f ozuben\u00e9ho kola a ot\u00e1\u010dek hnac\u00edho ozuben\u00e9ho kola lze z\u00edskat \u010dasov\u011b-frekven\u010dn\u00ed charakteristiku ot\u00e1\u010dek hnan\u00e9ho ozuben\u00e9ho kola a porovnat ji s v\u00fdsledkem za p\u0159edpokladu neexcentricity. Model excentrick\u00e9ho ozuben\u00e9ho kola je zn\u00e1zorn\u011bn na obr\u00e1zku 1.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1385\" height=\"1136\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Eccentric-gear-pair-model.png\" alt=\"\" class=\"wp-image-15991\"\/><figcaption class=\"wp-element-caption\">Obr\u00e1zek 1 Model excentrick\u00e9ho ozuben\u00e9ho kola<\/figcaption><\/figure>\n\n\n\n<p><code>O1<\/code> a <code>O2<\/code> jsou geometrick\u00e9 st\u0159edy ozuben\u00e9ho p\u00e1ru za p\u0159edpokladu neexcentricity. Po uplatn\u011bn\u00ed excentricity <code>E1<\/code> a <code>E2<\/code> doch\u00e1z\u00ed k tomu, \u017ee se geometrick\u00e9 st\u0159edy ozuben\u00fdch kol stanou <code>O11<\/code> a <code>O22<\/code>Je vid\u011bt, \u017ee bez ohledu na hodnotu excentricity je s\u00ed\u0165ov\u00e1 linie tvo\u0159en\u00e1 spojen\u00edm te\u010dn\u00fdch bod\u016f <code>T1(xT1, yT1)<\/code> a <code>T2(xT2, yT2)<\/code> v\u017edy m\u00e1 dynamick\u00fd pr\u016fse\u010d\u00edk <code>M(xM, yM)<\/code> s \u010d\u00e1rou spojuj\u00edc\u00ed geometrick\u00e9 st\u0159edy ozuben\u00fdch kol.<\/p>\n\n\n\n<p>Vzhledem k odsazen\u00ed m\u00e1 z\u00e1b\u011brov\u00e1 linie ozuben\u00e9ho p\u00e1ru \u010dasov\u011b prom\u011bnn\u00e9 charakteristiky. Jej\u00ed rovnici lze vyj\u00e1d\u0159it jako:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1005\" height=\"192\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Gear-Pair-Meshing-Line-Equation-watermarked.png\" alt=\"\" class=\"wp-image-16002\"\/><\/figure>\n\n\n\n<p>Kdy\u017e je po\u010d\u00e1tek sou\u0159adnic um\u00edst\u011bn v bod\u011b <code>O11<\/code>, dynamick\u00e1 p\u0159\u00ed\u010dn\u00e1 sou\u0159adnice bodu <code>M<\/code> lze vyj\u00e1d\u0159it jako:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"977\" height=\"198\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Dynamic-Intersection-Point-Coordinate-Equation-watermarked.png\" alt=\"\" class=\"wp-image-16003\"\/><\/figure>\n\n\n\n<p>Okam\u017eit\u00fd p\u0159evodov\u00fd pom\u011br ozuben\u00e9ho kola je:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"924\" height=\"204\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Instantaneous-Gear-Transmission-Ratio-Equation-watermarked.png\" alt=\"\" class=\"wp-image-16004\"\/><\/figure>\n\n\n\n<p>Ve skute\u010dn\u00e9m v\u00fdpo\u010dtu je dynamick\u00fd pr\u016fse\u010d\u00edk <code>M<\/code> m\u00e1 ur\u010dit\u00fd vztah k ose z\u00e1b\u011bru, \u00fahlu mezi sm\u011brem pohybu a okam\u017eit\u00e9 rychlosti ozuben\u00e9ho kola na ose z\u00e1b\u011bru. Po ur\u010den\u00ed rozsahu excentricity a vstupn\u00ed \u00fahlov\u00e9 rychlosti lze pomoc\u00ed vzorc\u016f (1) a\u017e (3) z\u00edskat \u00fahlovou rychlost hnan\u00e9ho ozuben\u00e9ho kola a d\u00e1le vypo\u010d\u00edtat dynamick\u00e9 buzen\u00ed dvojice ozuben\u00fdch kol p\u0159i chyb\u011b excentricity.<\/p>\n\n\n\n<p>Ve skute\u010dn\u00e9 v\u00fdrob\u011b, excentricity <code>E1<\/code> a <code>E2<\/code> lze p\u0159ibli\u017en\u011b pova\u017eovat za stejn\u00e9. S excentricitou dvojice \u0161roubov\u00fdch ozuben\u00fdch kol 20 \u03bcm pod zn\u00e1m\u00fdm stupn\u011bm p\u0159esnosti je vypo\u010d\u00edtan\u00e1 k\u0159ivka \u010dasov\u011b-frekven\u010dn\u00ed charakteristiky poh\u00e1n\u011bn\u00e9ho ozuben\u00e9ho kola zn\u00e1zorn\u011bna na obr\u00e1zku 2.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1033\" height=\"1523\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Time-frequency-curve-of-driven-gear-angular-velocity.png\" alt=\"\" class=\"wp-image-15989\"\/><figcaption class=\"wp-element-caption\">Obr\u00e1zek 2 \u010casovo-frekven\u010dn\u00ed k\u0159ivka \u00fahlov\u00e9 rychlosti poh\u00e1n\u011bn\u00e9ho ozuben\u00e9ho kola: (a) \u00fahlov\u00e1 rychlost v \u010dasov\u00e9 dom\u00e9n\u011b; (b) \u00fahlov\u00e1 rychlost ve frekven\u010dn\u00ed dom\u00e9n\u011b<\/figcaption><\/figure>\n\n\n\n<p>Pokud se nep\u0159edpokl\u00e1d\u00e1 \u017e\u00e1dn\u00e1 chyba excentricity, je \u00fahlov\u00e1 rychlost hnan\u00e9ho ozuben\u00e9ho kola na obr\u00e1zku 2a zn\u00e1zorn\u011bna r\u016f\u017eovou p\u0159\u00edmkou. Pokud existuje chyba excentricity, \u00fahlov\u00e1 rychlost hnan\u00e9ho ozuben\u00e9ho kola vykazuje zjevn\u00e9 a pravideln\u00e9 kol\u00eds\u00e1n\u00ed, soust\u0159ed\u011bn\u00e9 v rozsahu 40,5-41,5 rad\/s. V\u00fdsledek ve frekven\u010dn\u00ed dom\u00e9n\u011b po Fourierov\u011b transformaci odr\u00e1\u017e\u00ed frekvenci ot\u00e1\u010den\u00ed vstupn\u00edho h\u0159\u00eddele 25 Hz a frekvenci ot\u00e1\u010den\u00ed v\u00fdstupn\u00edho hnan\u00e9ho ozuben\u00e9ho kola 6,5 Hz. To nazna\u010duje, \u017ee kol\u00eds\u00e1n\u00ed excentricity vstupn\u00edho ozuben\u00e9ho kola se m\u016f\u017ee d\u00e1le p\u0159en\u00e1\u0161et p\u0159evodov\u00fdm syst\u00e9mem a vyza\u0159ovat ven z p\u0159evodovky.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-numerical-calculation-of-gear-excitation-in-overhead-crane-reducer-noise\">2 Numerick\u00fd v\u00fdpo\u010det buzen\u00ed ozuben\u00e9ho kola v reduktoru mostov\u00e9ho je\u0159\u00e1bu<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-1-vibration-differential-equation\">2.1 Vibra\u010dn\u00ed diferenci\u00e1ln\u00ed rovnice<\/h3>\n\n\n\n<p>Vibra\u010dn\u00ed diferenci\u00e1ln\u00ed rovnice p\u0159evodov\u00e9ho syst\u00e9mu v reduktoru mostov\u00e9ho je\u0159\u00e1bu je d\u016fle\u017eit\u00fdm z\u00e1kladem pro studium jeho dynamick\u00fdch charakteristik. Redukc\u00ed \u0159\u00e1du a v\u00fdpo\u010dtem dynamick\u00e9 z\u00e1b\u011brov\u00e9 s\u00edly p\u0159evodu lze numericky simulovat vibra\u010dn\u00ed charakteristiky, jako je intenzita vibrac\u00ed a struktur\u00e1ln\u00ed hluk. Po\u017eadovan\u00e1 diferenci\u00e1ln\u00ed rovnice druh\u00e9ho \u0159\u00e1du je:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"965\" height=\"135\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Gear-System-Vibration-Differential-Equation-watermarked.png\" alt=\"\" class=\"wp-image-16005\"\/><\/figure>\n\n\n\n<p>\u010casov\u00e1 rovnice dynamick\u00e9 sou\u0159adnice <code>M<\/code> je nahrazen do <code>\u03b8<\/code>a k \u0159e\u0161en\u00ed dynamick\u00e9 z\u00e1b\u011brov\u00e9 s\u00edly vysokorychlostn\u00edho ozuben\u00e9ho kola se pou\u017e\u00edv\u00e1 princip redukce \u0159\u00e1du Runge-Kutta. Obr\u00e1zek 3 ukazuje v\u00fdsledky v\u00fdpo\u010dtu z\u00e1b\u011brov\u00e9 s\u00edly pro vstupn\u00ed stupe\u0148 a kone\u010dn\u00fd v\u00fdstupn\u00ed stupe\u0148.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1022\" height=\"1538\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Frequency-domain-of-dynamic-meshing-force.png\" alt=\"\" class=\"wp-image-15978\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Frequency-domain-of-dynamic-meshing-force.png 1022w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Frequency-domain-of-dynamic-meshing-force-1021x1536.png 1021w\" sizes=\"(max-width: 1022px) 100vw, 1022px\" \/><figcaption class=\"wp-element-caption\">Obr\u00e1zek 3 Frekven\u010dn\u00ed dom\u00e9na dynamick\u00e9 z\u00e1b\u011brov\u00e9 s\u00edly: (a) vstupn\u00ed stupe\u0148; (b) v\u00fdstupn\u00ed stupe\u0148<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-2-vibration-analysis-results\">2.2 V\u00fdsledky vibra\u010dn\u00ed anal\u00fdzy<\/h3>\n\n\n\n<p>Obr\u00e1zek 4 zn\u00e1zor\u0148uje konstrukci reduktoru. Pro v\u00fdpo\u010det jsou vybr\u00e1ny polohy \u00falo\u017en\u00fdch ploch lo\u017eisek na vstupn\u00edm a v\u00fdstupn\u00edm konci a jsou z\u00edsk\u00e1ny k\u0159ivky vibrac\u00ed ve frekven\u010dn\u00ed dom\u00e9n\u011b p\u0159i chyb\u011b excentricity 20 \u03bcm.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"600\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Structure-of-an-overhead-crane-reducer.jpg\" alt=\"\" class=\"wp-image-15976\"\/><figcaption class=\"wp-element-caption\">Obr\u00e1zek 4 Struktura reduktoru mostov\u00e9ho je\u0159\u00e1bu<\/figcaption><\/figure>\n\n\n\n<p>Jak je zn\u00e1zorn\u011bno na obr\u00e1zku 5, po zohledn\u011bn\u00ed chyby excentricity ovliv\u0148uje frekvence ot\u00e1\u010den\u00ed vstupn\u00edho h\u0159\u00eddele 25 Hz ostatn\u00ed p\u00e1ry ozuben\u00fdch kol v r\u016fzn\u00fdch f\u00e1z\u00edch, zejm\u00e9na v k\u0159ivce posuvu. V\u00fdpo\u010det hluku zalo\u017een\u00fd na v\u00fdsledc\u00edch vibrac\u00ed pak m\u016f\u017ee uk\u00e1zat vliv chyby excentricity na abnorm\u00e1ln\u00ed hluk reduktoru.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1006\" height=\"1564\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Vibration-response-analysis-results.png\" alt=\"\" class=\"wp-image-15979\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Vibration-response-analysis-results.png 1006w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Vibration-response-analysis-results-988x1536.png 988w\" sizes=\"(max-width: 1006px) 100vw, 1006px\" \/><figcaption class=\"wp-element-caption\">Obr\u00e1zek 5 V\u00fdsledky anal\u00fdzy vibra\u010dn\u00ed odezvy: (a) zrychlen\u00ed; (b) vibra\u010dn\u00ed posunut\u00ed<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-radiated-noise-prediction-for-bogie-axle-bridge\">3 Predikce vyza\u0159ovan\u00e9ho hluku pro most s podvozkovou n\u00e1pravou<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-1-acoustic-model\">3.1 Akustick\u00fd model<\/h3>\n\n\n\n<p>Podle citovan\u00fdch odkaz\u016f pat\u0159\u00ed akustika do oblasti v\u00fdzkumu tekutin. Proto lze rovnici akustick\u00e9 vlny studovat z rovnice kontinuity tekutiny. Z hlediska stavu m\u00e9dia ji lze vyj\u00e1d\u0159it jako:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1224\" height=\"500\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Acoustic-Wave-Governing-Equations-watermarked.png\" alt=\"\" class=\"wp-image-16006\"\/><\/figure>\n\n\n\n<p>Ve vzorci, <code>\u03c1<\/code>, <code>proti<\/code>, <code>str.<\/code>a <code>s<\/code> jsou hustota, rychlost, akustick\u00fd tlak a entropie vzduchu, zat\u00edmco <code>F<\/code> a <code>q<\/code> jsou extern\u00edmi zdroji buzen\u00ed vzduchov\u00e9ho m\u00e9dia.<\/p>\n\n\n\n<p>Na z\u00e1klad\u011b vibra\u010dn\u00ed odezvy reduktoru mostov\u00e9ho je\u0159\u00e1bu je v\u00fdsledek v\u00fdpo\u010dtu zrychlen\u00ed zpracov\u00e1n Fourierovou transformac\u00ed a zpracov\u00e1n\u00edm v jedn\u00e9 t\u0159etin\u011b okt\u00e1vy. V\u00fdsledek v\u00fdpo\u010dtu struktur\u00e1ln\u00edho hluku \u00falo\u017en\u00e9ho m\u00edsta vysokorychlostn\u00edho stupn\u011b reduktoru je zn\u00e1zorn\u011bn na obr\u00e1zku 6.<\/p>\n\n\n\n<p>Pokud se vezme v \u00favahu chyba excentricity, struktur\u00e1ln\u00ed hluk reduktoru se v\u00fdrazn\u011bji zvy\u0161uje v n\u00edzkofrekven\u010dn\u00edm rozsahu 0\u2013100 Hz. Podle akustick\u00e9 teorie p\u0159edstavuje rozd\u00edl 6 dB jednor\u00e1zov\u00fd rozd\u00edl v energetick\u00e9 hladin\u011b. Na obr\u00e1zku 6 dosahuje rozd\u00edl \u0161umu v n\u011bkter\u00fdch frekven\u010dn\u00edch p\u00e1smech p\u0159ibli\u017en\u011b trojn\u00e1sobku, co\u017e ukazuje, \u017ee chyba excentricity m\u00e1 z\u00e1sadn\u00ed vliv na n\u00edzkofrekven\u010dn\u00ed vibrace reduktoru. Jasn\u00e9 vrcholy se objevuj\u00ed tak\u00e9 p\u0159i 500 Hz a 1 000 Hz, kter\u00e9 jsou zp\u016fsobeny frekvenc\u00ed z\u00e1b\u011bru ozuben\u00fdch kol vstupn\u00edho stupn\u011b.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1588\" height=\"990\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Structural-noise-of-the-reducer.png\" alt=\"\" class=\"wp-image-15980\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Structural-noise-of-the-reducer.png 1588w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Structural-noise-of-the-reducer-1536x958.png 1536w\" sizes=\"(max-width: 1588px) 100vw, 1588px\" \/><figcaption class=\"wp-element-caption\">Obr\u00e1zek 6 Struktur\u00e1ln\u00ed hluk reduktoru<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-2-measures-to-reduce-abnormal-noise\">3.2 Opat\u0159en\u00ed ke sn\u00ed\u017een\u00ed abnorm\u00e1ln\u00edho hluku<\/h3>\n\n\n\n<p>Excentricita 20 \u03bcm pou\u017eit\u00e1 ve v\u00fdpo\u010dtu je zvolena podle stupn\u011b p\u0159esnosti p\u0159evodu ozuben\u00e9ho kola. Ve skute\u010dn\u00e9m provozu m\u016f\u017ee existovat v\u011bt\u0161\u00ed chyba excentricity, kter\u00e1 m\u016f\u017ee v\u00fdrazn\u011b ovlivnit vibrace a sn\u00ed\u017een\u00ed hluku reduktoru. Na z\u00e1klad\u011b anal\u00fdzy a z\u00e1v\u011br\u016f v tomto \u010dl\u00e1nku lze abnorm\u00e1ln\u00ed hluk sn\u00ed\u017eit z n\u00e1sleduj\u00edc\u00edch d\u016fvod\u016f:<\/p>\n\n\n\n<p>1. Zlep\u0161it v\u00fdb\u011br stupn\u011b p\u0159esnosti p\u0159evodu ozuben\u00fdch kol. Mnoho mostov\u00fdch je\u0159\u00e1b\u016f pou\u017e\u00edv\u00e1 \u0161ikm\u00e1 ozuben\u00e1 kola generovan\u00e1 stupn\u011bm 8. B\u011b\u017en\u00e9 je\u0159\u00e1bov\u00e9 reduktory nezohled\u0148uj\u00ed n\u00e1sledn\u00e9 p\u0159esn\u00e9 dokon\u010dov\u00e1n\u00ed, tak\u017ee chyba excentricity m\u016f\u017ee v\u00e9st k vy\u0161\u0161\u00edmu vyza\u0159ovan\u00e9mu hluku. Pokud se v kone\u010dn\u00e9 f\u00e1zi dokon\u010dov\u00e1n\u00ed zva\u017euje kalen\u00ed a brou\u0161en\u00ed ozuben\u00fdch kol, lapov\u00e1n\u00ed povrch\u016f zub\u016f nebo podobn\u00e9 o\u0161et\u0159en\u00ed, lze dos\u00e1hnout stupn\u011b p\u0159esnosti 7 nebo 6. To m\u016f\u017ee b\u00fdt lep\u0161\u00ed volbou pro d\u00edlny s p\u0159\u00edsn\u011bj\u0161\u00edmi po\u017eadavky na regulaci hluku.<\/p>\n\n\n\n<p>2. Optimalizujte syst\u00e9m ozuben\u00e9ho p\u0159evodu. Z pohledu p\u0159evodov\u00e9ho syst\u00e9mu by m\u011bla b\u00fdt zohledn\u011bna omezen\u00ed, jako je \u00fanavov\u00e1 pevnost v uzav\u0159en\u00e9m kontaktu ozuben\u00e9ho kola, p\u0159evodov\u00fd pom\u011br a sou\u010dinitel \u0161\u00ed\u0159ky \u010dela. Genetick\u00fd algoritmus lze pou\u017e\u00edt k m\u00edrn\u00e9 \u00faprav\u011b modulu ozuben\u00e9ho kola, \u0161\u00ed\u0159ky zubu a po\u010dtu zub\u016f hnac\u00edho kola, ani\u017e by se tato omezen\u00ed v\u00fdznamn\u011b zm\u011bnila, tak\u017ee frekvence p\u0159enosu hluku reduktoru bude udr\u017eov\u00e1na mimo rozsah citliv\u00fd na lidsk\u00fd sluch. Specifick\u00e1 metoda vy\u017eaduje odpov\u00eddaj\u00edc\u00ed programy a testy k ov\u011b\u0159en\u00ed optim\u00e1ln\u00edch parametr\u016f ozuben\u00e9ho kola.<\/p>\n\n\n\n<p>3. Optimalizace konstrukce sk\u0159\u00edn\u011b reduktoru. Hlavn\u00edm \u00fa\u010delem optimalizace sk\u0159\u00edn\u011b je zlep\u0161en\u00ed jej\u00ed vlastn\u00ed frekvence. Prvn\u00edch deset vlastn\u00edch frekvenc\u00ed v\u00edcestup\u0148ov\u00e9ho p\u0159evodov\u00e9ho syst\u00e9mu s paraleln\u00edmi h\u0159\u00eddeli je obecn\u011b n\u00edzk\u00fdch, obvykle v rozsahu 50-500 Hz, a mohou se snadno p\u0159ekr\u00fdvat s frekvenc\u00ed ot\u00e1\u010den\u00ed hnac\u00edho kola a jeho harmonick\u00fdmi slo\u017ekami, co\u017e zp\u016fsobuje rezonanci. D\u00edky konstrukci reduktoru lze materi\u00e1l odstra\u0148ovat z ur\u010dit\u00fdch poloh. To nejen \u0161et\u0159\u00ed n\u00e1klady na materi\u00e1l, ale tak\u00e9 m\u016f\u017ee zv\u00fd\u0161it vlastn\u00ed frekvenci reduktoru a \u00fa\u010dinn\u011b sn\u00ed\u017eit abnorm\u00e1ln\u00ed hluk zp\u016fsoben\u00fd chybou excentricity.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-conclusion\">4 Z\u00e1v\u011br<\/h2>\n\n\n\n<p>Tento \u010dl\u00e1nek se za v\u00fdzkumn\u00fd objekt zab\u00fdv\u00e1 mostov\u00fdm je\u0159\u00e1bem a jeho reduktorem a analyzuje vliv chyby excentricity ozuben\u00fdch kol na abnorm\u00e1ln\u00ed hluk reduktoru. Z\u00e1v\u011bry jsou n\u00e1sleduj\u00edc\u00ed:<\/p>\n\n\n\n<p>1. Pokud se vezme v \u00favahu chyba excentricity, \u00fahlov\u00e1 rychlost hnan\u00e9ho ozuben\u00e9ho kola vykazuje pravideln\u00e9 kol\u00eds\u00e1n\u00ed. Rozsah kol\u00eds\u00e1n\u00ed je soust\u0159ed\u011bn v rozmez\u00ed 40,5-41,5 rad\/s. Odr\u00e1\u017e\u00ed frekvenci ot\u00e1\u010den\u00ed vstupn\u00edho h\u0159\u00eddele 25 Hz a frekvenci ot\u00e1\u010den\u00ed v\u00fdstupn\u00edho hnan\u00e9ho ozuben\u00e9ho kola 6,5 Hz a nad\u00e1le ovliv\u0148uje p\u0159evod n\u00e1sledn\u00e9ho p\u00e1ru ozuben\u00fdch kol.<\/p>\n\n\n\n<p>2. P\u0159i odchylce excentricity se struktur\u00e1ln\u00ed hluk reduktoru v\u00fdrazn\u011bji zvy\u0161uje v n\u00edzkofrekven\u010dn\u00edm rozsahu 0-100 Hz. Maxim\u00e1ln\u00ed rozd\u00edl dosahuje 15 dB a hladina hluku se zvy\u0161uje 2,5kr\u00e1t, co\u017e z\u0159eteln\u011b zesiluje abnorm\u00e1ln\u00ed hluk p\u0159evodovky.<\/p>\n\n\n\n<p>3. Je navr\u017eeno n\u011bkolik \u0159e\u0161en\u00ed, v\u010detn\u011b zlep\u0161en\u00ed stupn\u011b p\u0159esnosti p\u0159evodovky, optimalizace parametr\u016f p\u0159evodovky a zv\u00fd\u0161en\u00ed vlastn\u00ed frekvence konstrukce.<\/p>","protected":false},"excerpt":{"rendered":"Hluk reduktoru mostov\u00e9ho je\u0159\u00e1bu se m\u016f\u017ee objevit b\u011bhem zved\u00e1n\u00ed a manipulace s materi\u00e1lem v d\u00edln\u00e1ch a ovlivnit tak norm\u00e1ln\u00ed provoz je\u0159\u00e1bu. Tento \u010dl\u00e1nek analyzuje abnorm\u00e1ln\u00ed hluk z hlediska chyby excentricity ozuben\u00e9ho p\u00e1ru. Na z\u00e1klad\u011b v\u00fdsledk\u016f v\u00fdpo\u010dtu struktur\u00e1ln\u00edho hluku ze simula\u010dn\u00ed anal\u00fdzy tak\u00e9 uv\u00e1d\u00ed odpov\u00eddaj\u00edc\u00ed \u0159e\u0161en\u00ed jako referenci pro zlep\u0161en\u00ed provozn\u00edho v\u00fdkonu mostov\u00e9ho je\u0159\u00e1bu. 1 Ozuben\u00e9 kolo [\u2026]","protected":false},"featured_media":15994,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[197],"posts_tag":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/15972"}],"collection":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":23,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/15972\/revisions"}],"predecessor-version":[{"id":16007,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/15972\/revisions\/16007"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/media\/15994"}],"wp:attachment":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/media?parent=15972"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/posts_category?post=15972"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/posts_tag?post=15972"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}