{"id":17466,"date":"2026-10-24T03:24:22","date_gmt":"2026-10-24T03:24:22","guid":{"rendered":"https:\/\/www.dgcrane.com\/?post_type=posts&#038;p=17466"},"modified":"2026-10-24T03:24:26","modified_gmt":"2026-10-24T03:24:26","slug":"overhead-crane-planetary-gearbox-ratios","status":"publish","type":"posts","link":"https:\/\/www.dgcrane.com\/cs\/posts\/overhead-crane-planetary-gearbox-ratios\/","title":{"rendered":"Planetov\u00e1 p\u0159evodovka mostov\u00e9ho je\u0159\u00e1bu: Jak \u010dty\u0159i komponenty vytv\u00e1\u0159ej\u00ed v\u00edce p\u0159evodov\u00fdch pom\u011br\u016f"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Obsah<\/h2><nav><ul><li><a href=\"#1-what-are-the-four-components-of-a-planetary-gearbox\">1. Jak\u00e9 jsou \u010dty\u0159i komponenty planetov\u00e9 p\u0159evodovky?<\/a><ul><li><a href=\"#1-1-sun-gear-the-central-gear-of-the-system\">1.1 Slune\u010dn\u00ed p\u0159evod: Centr\u00e1ln\u00ed p\u0159evod syst\u00e9mu<\/a><\/li><li><a href=\"#1-2-planet-gears-rotating-on-their-own-axes-while-orbiting-the-sun\">1.2 Planetov\u00e1 soukol\u00ed: Ot\u00e1\u010den\u00ed kolem vlastn\u00edch os p\u0159i ob\u011bhu kolem Slunce<\/a><\/li><li><a href=\"#1-3-ring-gear-enclosing-the-entire-gear-set\">1.3 Ozuben\u00fd v\u011bnec: Uzav\u00edr\u00e1n\u00ed cel\u00e9 sady ozuben\u00fdch kol<\/a><\/li><li><a href=\"#1-4-planet-carrier-determining-how-the-planets-move-as-a-group\">1.4 Nosi\u010d planet: Ur\u010den\u00ed pohybu planet jako skupiny<\/a><\/li><\/ul><\/li><li><a href=\"#2-the-real-core-of-the-planetary-gear-ratio-one-equation-links-the-three-rotating-members\">2. Skute\u010dn\u00e9 j\u00e1dro planetov\u00e9ho p\u0159evodov\u00e9ho pom\u011bru: Jedna rovnice spojuje t\u0159i rotuj\u00edc\u00ed \u010dleny<\/a><\/li><li><a href=\"#3-the-most-common-arrangement-ring-gear-fixed-sun-input-carrier-output\">3. Nejb\u011b\u017en\u011bj\u0161\u00ed uspo\u0159\u00e1d\u00e1n\u00ed: Pevn\u00e9 ozuben\u00e9 kolo, vstup pro slune\u010dn\u00ed kolo, v\u00fdstup pro nosi\u010d<\/a><\/li><li><a href=\"#4-the-same-gears-produce-completely-different-results-when-a-different-member-is-fixed\">4. Stejn\u00e1 ozuben\u00e1 kola produkuj\u00ed zcela odli\u0161n\u00e9 v\u00fdsledky, kdy\u017e je upevn\u011bn jin\u00fd \u010dlen<\/a><\/li><li><a href=\"#5-why-can-a-planetary-gear-set-transmit-high-torque-in-such-a-small-space\">5. Pro\u010d dok\u00e1\u017ee planetov\u00e1 p\u0159evodovka p\u0159en\u00e1\u0161et vysok\u00fd to\u010div\u00fd moment v tak mal\u00e9m prostoru?<\/a><\/li><li><a href=\"#6-why-are-planetary-gears-particularly-popular-in-automatic-transmissions\">6. Pro\u010d jsou planetov\u00e9 p\u0159evodovky obzvl\u00e1\u0161t\u011b obl\u00edben\u00e9 v automatick\u00fdch p\u0159evodovk\u00e1ch?<\/a><\/li><li><a href=\"#7-why-do-overhead-cranes-and-construction-machinery-rely-on-planetary-reducers\">7. Pro\u010d se mostov\u00e9 je\u0159\u00e1by a stavebn\u00ed stroje spol\u00e9haj\u00ed na planetov\u00e9 reduktory?<\/a><\/li><li><a href=\"#8-an-easily-overlooked-geometric-condition-tooth-counts-cannot-be-chosen-arbitrarily\">8. Snadno p\u0159ehl\u00ed\u017een\u00e1 geometrick\u00e1 podm\u00ednka: Po\u010det zub\u016f nelze volit libovoln\u011b<\/a><\/li><li><a href=\"#9-four-statements-are-enough-to-understand-a-planetary-gear-set\">9. \u010cty\u0159i tvrzen\u00ed sta\u010d\u00ed k pochopen\u00ed planetov\u00e9ho p\u0159evodu<\/a><\/li><li><a href=\"#final-note-its-real-strength-is-not-the-number-of-gears-but-the-use-of-degrees-of-freedom\">Z\u00e1v\u011bre\u010dn\u00e1 pozn\u00e1mka: Jeho skute\u010dnou silou nen\u00ed po\u010det p\u0159evodov\u00fdch stup\u0148\u016f, ale vyu\u017eit\u00ed stup\u0148\u016f volnosti<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Rozeberte automatickou p\u0159evodovku, planetovou p\u0159evodovku mostov\u00e9ho je\u0159\u00e1bu nebo n\u011bkter\u00e9 robotick\u00e9 reduktory a opakovan\u011b uvid\u00edte velmi charakteristickou strukturu ozuben\u00fdch kol: mal\u00e9 ozuben\u00e9 kolo uprost\u0159ed, n\u011bkolik mal\u00fdch ozuben\u00fdch kol kolem n\u011bj a vn\u011bj\u0161\u00ed krou\u017eek s vnit\u0159n\u00edmi zuby.<\/p>\n\n\n\n<p>Vypad\u00e1 to jako nic v\u00edc ne\u017e \u201en\u011bkolik ozuben\u00fdch kol uspo\u0159\u00e1dan\u00fdch v kruhu\u201c, p\u0159esto dok\u00e1\u017ee ve velmi mal\u00e9m prostoru sn\u00ed\u017eit rychlost, zv\u00fd\u0161it rychlost, prov\u00e9st reverzaci a prov\u00e9st koaxi\u00e1ln\u00ed p\u0159enos. Dok\u00e1\u017ee dokonce vytvo\u0159it zcela odli\u0161n\u00fd planetov\u00fd p\u0159evodov\u00fd pom\u011br pouhou zm\u011bnou toho, kter\u00e1 sou\u010d\u00e1st je pevn\u00e1, kter\u00e1 je vstupn\u00ed a kter\u00e1 v\u00fdstupn\u00ed.<\/p>\n\n\n\n<p>Jedn\u00e1 se o planetovou p\u0159evodovku. To, co ji \u010din\u00ed silnou, nen\u00ed po\u010det p\u0159evodov\u00fdch stup\u0148\u016f, ale striktn\u00ed kinematick\u00fd vztah mezi jej\u00edmi \u010dty\u0159mi hlavn\u00edmi komponenty.<\/p>\n\n\n\n<p>Nejprve si pamatujte jednu v\u011bc: planetov\u00e9 soukol\u00ed nem\u011bn\u00ed sv\u016fj p\u0159evodov\u00fd pom\u011br \u201ep\u0159epnut\u00edm na jin\u00e9 soukol\u00ed\u201c. M\u00edsto toho p\u0159erozd\u011bluje pohyb cel\u00e9ho soukol\u00ed zm\u011bnou vstupn\u00edho, v\u00fdstupn\u00edho a pevn\u00e9ho pom\u011bru mezi centr\u00e1ln\u00edm kolem, korunov\u00fdm kolem a nosi\u010dem planetov\u00fdch kol.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-what-are-the-four-components-of-a-planetary-gearbox\">1. Jak\u00e9 jsou \u010dty\u0159i komponenty planetov\u00e9 p\u0159evodovky?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-1-sun-gear-the-central-gear-of-the-system\">1.1 Slune\u010dn\u00ed p\u0159evod: Centr\u00e1ln\u00ed p\u0159evod syst\u00e9mu<\/h3>\n\n\n\n<p>Centr\u00e1ln\u00ed kolo se nach\u00e1z\u00ed uprost\u0159ed a obvykle zab\u00edr\u00e1 s n\u011bkolika planetov\u00fdmi koly sou\u010dasn\u011b. U mnoha reduktor\u016f je vstupn\u00ed h\u0159\u00eddel elektromotoru nebo hydraulick\u00e9ho motoru p\u0159\u00edmo spojena s centr\u00e1ln\u00edm kolem, tak\u017ee \u010dasto nese vysokorychlostn\u00ed vstup. Po\u010det zub\u016f na centr\u00e1ln\u00edm kole se ozna\u010duje Z.<sub>s<\/sub>a jeho \u00fahlovou rychlost pomoc\u00ed \u03c9<sub>s<\/sub>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-2-planet-gears-rotating-on-their-own-axes-while-orbiting-the-sun\">1.2 Planetov\u00e1 soukol\u00ed: Ot\u00e1\u010den\u00ed kolem vlastn\u00edch os p\u0159i ob\u011bhu kolem Slunce<\/h3>\n\n\n\n<p>Planetov\u00e1 kola jsou nejzaj\u00edmav\u011bj\u0161\u00ed \u010d\u00e1st\u00ed mechanismu. Ka\u017ed\u00e9 planetov\u00e9 kolo se ot\u00e1\u010d\u00ed kolem sv\u00e9 vlastn\u00ed osy a z\u00e1rove\u0148 se ot\u00e1\u010d\u00ed kolem centr\u00e1ln\u00edho kola s nosi\u010dem planet. Z\u00e1rove\u0148 zab\u00edr\u00e1 jak s centr\u00e1ln\u00edm kolem, tak s vnit\u0159n\u00edm ozuben\u00fdm v\u011bncem.<\/p>\n\n\n\n<p>Zv\u00fd\u0161en\u00ed po\u010dtu planetov\u00fdch p\u0159evod\u016f nem\u011bn\u00ed teoretick\u00fd p\u0159evodov\u00fd pom\u011br jednoduch\u00e9ho planetov\u00e9ho p\u0159evodov\u00e9ho mechanismu. Pokud je v\u0161ak konstrukce vhodn\u00e1 a rozd\u011blen\u00ed z\u00e1t\u011b\u017ee je dobr\u00e9, m\u016f\u017ee se o z\u00e1t\u011b\u017e pod\u011blit v\u00edce planetov\u00fdch p\u0159evod\u016f. To je jeden z d\u016fvod\u016f, pro\u010d m\u016f\u017ee planetov\u00e1 p\u0159evodovka dos\u00e1hnout vysok\u00e9 hustoty to\u010div\u00e9ho momentu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-3-ring-gear-enclosing-the-entire-gear-set\">1.3 Ozuben\u00fd v\u011bnec: Uzav\u00edr\u00e1n\u00ed cel\u00e9 sady ozuben\u00fdch kol<\/h3>\n\n\n\n<p>Ozuben\u00fd v\u011bnec je um\u00edst\u011bn na vn\u011bj\u0161\u00ed stran\u011b, jeho zuby sm\u011b\u0159uj\u00ed dovnit\u0159. Tvo\u0159\u00ed vnit\u0159n\u00ed z\u00e1b\u011br s planetov\u00fdmi koly. Ozuben\u00fd v\u011bnec m\u016f\u017ee b\u00fdt pevn\u00fd nebo m\u016f\u017ee b\u00fdt pou\u017eit jako vstupn\u00ed nebo v\u00fdstupn\u00ed prvek. Po\u010det zub\u016f na ozuben\u00e9m v\u011bnci se ozna\u010duje Z.<sub>r<\/sub>a jeho \u00fahlovou rychlost pomoc\u00ed \u03c9<sub>r<\/sub>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-4-planet-carrier-determining-how-the-planets-move-as-a-group\">1.4 Nosi\u010d planet: Ur\u010den\u00ed pohybu planet jako skupiny<\/h3>\n\n\n\n<p>Planetov\u00e1 kola se neot\u00e1\u010dej\u00ed bez opory. Jejich h\u0159\u00eddele jsou ulo\u017eeny na nosi\u010di planetov\u00fdch kol. Nosi\u010d spojuje planetov\u00e1 kola do jedn\u00e9 sestavy, tak\u017ee rotace nosi\u010de p\u0159edstavuje ot\u00e1\u010den\u00ed planetov\u00fdch kol kolem centr\u00e1ln\u00edho kola. \u00dahlov\u00e1 rychlost nosi\u010de se ozna\u010duje \u03c9.<sub>C<\/sub>V mnoha pr\u016fmyslov\u00fdch reduktorech je b\u011b\u017en\u00fdm uspo\u0159\u00e1d\u00e1n\u00edm pevn\u011b upevn\u011bno ozuben\u00e9 kolo, centr\u00e1ln\u00ed kolo je pou\u017eito jako vstup a nosi\u010d planetov\u00fdch kol je pou\u017eit jako v\u00fdstup.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Komponent<\/th><th>B\u011b\u017en\u00fd symbol<\/th><th>Hlavn\u00ed funkce<\/th><th>Typick\u00fd stav<\/th><\/tr><\/thead><tbody><tr><td>Slune\u010dn\u00ed v\u00fdstroj<\/td><td>Z<sub>s<\/sub>\/\u03c9<sub>s<\/sub><\/td><td>Centr\u00e1ln\u00ed ozuben\u00e9 kolo, kter\u00e9 p\u0159en\u00e1\u0161\u00ed pohyb a to\u010div\u00fd moment na planetov\u00e1 kola<\/td><td>\u010casto se pou\u017e\u00edv\u00e1 jako vysokorychlostn\u00ed vstup<\/td><\/tr><tr><td>Planetov\u00e1 ozuben\u00e1 kola<\/td><td>Z<sub>str.<\/sub>\/\u03c9<sub>str.<\/sub><\/td><td>Z\u00e1b\u011br s centr\u00e1ln\u00edm i v\u011bncov\u00fdm kolem<\/td><td>Rotace plus revoluce<\/td><\/tr><tr><td>Ozuben\u00fd v\u011bnec<\/td><td>Z<sub>r<\/sub>\/\u03c9<sub>r<\/sub><\/td><td>Vn\u011bj\u0161\u00ed vnit\u0159n\u00ed ozuben\u00e9 kolo, kter\u00e9 omezuje a pod\u00edl\u00ed se na p\u0159enosu<\/td><td>M\u016f\u017ee b\u00fdt pevn\u00fd, vstupn\u00ed nebo v\u00fdstupn\u00ed<\/td><\/tr><tr><td>Planet\u00e1rn\u00ed nosi\u010d<\/td><td>\u03c9<sub>C<\/sub><\/td><td>Podp\u00edr\u00e1 h\u0159\u00eddele planetov\u00fdch kol a zaji\u0161\u0165uje orbit\u00e1ln\u00ed pohyb<\/td><td>\u010casto se pou\u017e\u00edv\u00e1 jako n\u00edzkorychlostn\u00ed v\u00fdstup<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/10\/planetary-gearbox-components.png\" alt=\"\u010cty\u0159i z\u00e1kladn\u00ed komponenty planetov\u00e9 p\u0159evodovky\" class=\"wp-image-17468\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-the-real-core-of-the-planetary-gear-ratio-one-equation-links-the-three-rotating-members\">2. Skute\u010dn\u00e9 j\u00e1dro planetov\u00e9ho p\u0159evodov\u00e9ho pom\u011bru: Jedna rovnice spojuje t\u0159i rotuj\u00edc\u00ed \u010dleny<\/h2>\n\n\n\n<p>V b\u011b\u017en\u00e9m p\u0159evodu s pevnou osou jsou polohy obou os ozuben\u00fdch kol pevn\u00e9, tak\u017ee p\u0159evodov\u00fd pom\u011br je relativn\u011b intuitivn\u00ed. U planetov\u00e9ho soukol\u00ed je to jin\u00e9: osy planetov\u00fdch kol se pohybuj\u00ed s nosi\u010dem planet, tak\u017ee jednoduch\u00e9 pravidlo \u201epo\u010det zub\u016f hnac\u00edho kola d\u011bleno zuby hnan\u00e9ho kola\u201c nelze p\u0159\u00edmo pou\u017e\u00edt.<\/p>\n\n\n\n<p>Pro nejb\u011b\u017en\u011bj\u0161\u00ed jednoduchou planetovou soukol\u00ed vyjad\u0159uje Willisova rovnice vztah rychlosti mezi centr\u00e1ln\u00edm kolem, korunov\u00fdm kolem a nosi\u010dem planet:<\/p>\n\n\n\n<div class=\"planetary-equation\" role=\"math\" aria-label=\"omega s minus omega c divided by omega r minus omega c equals negative Z r divided by Z s\" style=\"display:flex;justify-content:center;align-items:center;gap:.45em;margin:1.5em 0;font-family:Georgia,'Times New Roman',serif;font-size:1.3em;\"><span style=\"display:inline-flex;flex-direction:column;text-align:center;line-height:1.2;\"><span style=\"border-bottom:1px solid currentColor;padding:0 .25em .12em;\">\u03c9<sub>s<\/sub> \u2212 \u03c9<sub>C<\/sub><\/span><span style=\"padding:.12em .25em 0;\">\u03c9<sub>r<\/sub> \u2212 \u03c9<sub>C<\/sub><\/span><\/span><span>= \u2212<\/span><span style=\"display:inline-flex;flex-direction:column;text-align:center;line-height:1.2;\"><span style=\"border-bottom:1px solid currentColor;padding:0 .25em .12em;\">Z<sub>r<\/sub><\/span><span style=\"padding:.12em .25em 0;\">Z<sub>s<\/sub><\/span><\/span><\/div>\n\n\n\n<p>Zde, <span class=\"math-inline\" role=\"math\" style=\"white-space:nowrap;font-family:Georgia,'Times New Roman',serif;\">\u03c9\u209b<\/span>, <span class=\"math-inline\" role=\"math\" style=\"white-space:nowrap;font-family:Georgia,'Times New Roman',serif;\">\u03c9\u1d63<\/span>, a <span class=\"math-inline\" role=\"math\" style=\"white-space:nowrap;font-family:Georgia,'Times New Roman',serif;\">\u03c9\ua700<\/span> jsou \u00fahlov\u00e9 rychlosti centr\u00e1ln\u00edho kola, korunov\u00e9ho kola a una\u0161e\u010de planetov\u00fdch kol; <span class=\"math-inline\" role=\"math\" style=\"white-space:nowrap;font-family:Georgia,'Times New Roman',serif;\">Z\u209b<\/span> a <span class=\"math-inline\" role=\"math\" style=\"white-space:nowrap;font-family:Georgia,'Times New Roman',serif;\">Z\u1d63<\/span> jsou po\u010dty zub\u016f na centr\u00e1ln\u00edm a korunov\u00e9m ozuben\u00e9m kole.<\/p>\n\n\n\n<p>Nejd\u016fle\u017eit\u011bj\u0161\u00ed \u010d\u00e1st\u00ed t\u00e9to rovnice nen\u00ed znam\u00e9nko m\u00ednus, ale fakt, \u017ee <span class=\"math-inline\" role=\"math\" style=\"white-space:nowrap;font-family:Georgia,'Times New Roman',serif;\">\u03c9\ua700<\/span> se ode\u010d\u00edt\u00e1 od obou rychlost\u00ed. Jin\u00fdmi slovy, z\u00e1b\u011brov\u00fd vztah v planetov\u00e9m soukol\u00ed mus\u00ed b\u00fdt ch\u00e1p\u00e1n v referen\u010dn\u00ed soustav\u011b, kter\u00e1 se ot\u00e1\u010d\u00ed spole\u010dn\u011b s nosi\u010dem planety.<\/p>\n\n\n\n<p>Jakmile je zn\u00e1ma rychlost nebo pevn\u00fd stav libovoln\u00fdch dvou \u010dlen\u016f, lze vypo\u010d\u00edtat rychlost t\u0159et\u00edho. Stejn\u00e1 soukol\u00ed tedy m\u016f\u017ee produkovat zcela odli\u0161n\u00e9 v\u00fdsledky pohybu bez zm\u011bny po\u010dtu zub\u016f.<\/p>\n\n\n\n<p>Pro\u010d se to zd\u00e1 tak d\u016fmysln\u00e9? U centr\u00e1ln\u00edho ozuben\u00e9ho kola, korunov\u00e9ho ozuben\u00e9ho kola a una\u0161e\u010de planetov\u00fdch kol plat\u00ed, \u017ee upevn\u011bn\u00ed jednoho \u010dlenu a volba vstupu a v\u00fdstupu z ostatn\u00edch dvou vytv\u00e1\u0159\u00ed r\u016fzn\u00e9 kombinace redukce, zv\u00fd\u0161en\u00ed rychlosti nebo zp\u011btn\u00e9ho ot\u00e1\u010den\u00ed. Struktura z\u016fst\u00e1v\u00e1 nezm\u011bn\u011bna, ale m\u011bn\u00ed se vztah pohybu.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/10\/planetary-gear-motion.png\" alt=\"Vztah pohybu v planetov\u00e9m soukol\u00ed\" class=\"wp-image-17469\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-the-most-common-arrangement-ring-gear-fixed-sun-input-carrier-output\">3. Nejb\u011b\u017en\u011bj\u0161\u00ed uspo\u0159\u00e1d\u00e1n\u00ed: Pevn\u00e9 ozuben\u00e9 kolo, vstup pro slune\u010dn\u00ed kolo, v\u00fdstup pro nosi\u010d<\/h2>\n\n\n\n<p>Toto je b\u011b\u017en\u00e9 z\u00e1kladn\u00ed uspo\u0159\u00e1d\u00e1n\u00ed u p\u0159evodovek pojezdu mostov\u00fdch je\u0159\u00e1b\u016f, reduktor\u016f ot\u00e1\u010den\u00ed a mnoha pr\u016fmyslov\u00fdch planetov\u00fdch p\u0159evodovek. Nech\u0165 je ozuben\u00fd v\u011bnec pevn\u00fd, tak\u017ee <span class=\"math-inline\" role=\"math\" style=\"white-space:nowrap;font-family:Georgia,'Times New Roman',serif;\">\u03c9\u1d63 = 0<\/span>Dosazen\u00edm t\u00e9to podm\u00ednky do Willisovy rovnice dostaneme:<\/p>\n\n\n\n<div class=\"planetary-equation\" role=\"math\" aria-label=\"i equals omega s divided by omega c equals one plus Z r divided by Z s\" style=\"display:flex;justify-content:center;align-items:center;gap:.45em;margin:1.5em 0;font-family:Georgia,'Times New Roman',serif;font-size:1.3em;\"><span><i>j\u00e1<\/i> =<\/span><span style=\"display:inline-flex;flex-direction:column;text-align:center;line-height:1.2;\"><span style=\"border-bottom:1px solid currentColor;padding:0 .25em .12em;\">\u03c9<sub>s<\/sub><\/span><span style=\"padding:.12em .25em 0;\">\u03c9<sub>C<\/sub><\/span><\/span><span>= 1 +<\/span><span style=\"display:inline-flex;flex-direction:column;text-align:center;line-height:1.2;\"><span style=\"border-bottom:1px solid currentColor;padding:0 .25em .12em;\">Z<sub>r<\/sub><\/span><span style=\"padding:.12em .25em 0;\">Z<sub>s<\/sub><\/span><\/span><\/div>\n\n\n\n<p>Pokud m\u00e1 centr\u00e1ln\u00ed kolo 20 zub\u016f a korunov\u00e9 kolo 60 zub\u016f:<\/p>\n\n\n\n<div class=\"planetary-equation\" role=\"math\" aria-label=\"i equals one plus sixty divided by twenty equals four\" style=\"display:flex;justify-content:center;align-items:center;gap:.45em;margin:1.5em 0;font-family:Georgia,'Times New Roman',serif;font-size:1.3em;\"><span><i>j\u00e1<\/i> = 1 +<\/span><span style=\"display:inline-flex;flex-direction:column;text-align:center;line-height:1.2;\"><span style=\"border-bottom:1px solid currentColor;padding:0 .25em .12em;\">60<\/span><span style=\"padding:.12em .25em 0;\">20<\/span><\/span><span>= 4<\/span><\/div>\n\n\n\n<p>Centr\u00e1ln\u00ed kolo se oto\u010d\u00ed o \u010dty\u0159i ot\u00e1\u010dky, zat\u00edmco una\u0161e\u010d planetov\u00e9ho kola se oto\u010d\u00ed p\u0159ibli\u017en\u011b o jednu ot\u00e1\u010dku. Pokud jsou vstupn\u00ed ot\u00e1\u010dky centr\u00e1ln\u00edho kola 1 200 ot\/min, pak po zanedb\u00e1n\u00ed ztr\u00e1t jsou teoretick\u00e9 v\u00fdstupn\u00ed ot\u00e1\u010dky una\u0161e\u010de planetov\u00e9ho kola p\u0159ibli\u017en\u011b 300 ot\/min.<\/p>\n\n\n\n<p>Toto je typick\u00e9 sn\u00ed\u017een\u00ed ot\u00e1\u010dek s n\u00e1soben\u00edm to\u010div\u00e9ho momentu. Teoreticky, pokud se ztr\u00e1ty zanedbaj\u00ed, sn\u00ed\u017een\u00ed ot\u00e1\u010dek p\u0159ibli\u017en\u011b na jednu \u010dtvrtinu odpov\u00eddaj\u00edc\u00edm zp\u016fsobem zv\u00fd\u0161\u00ed v\u00fdstupn\u00ed to\u010div\u00fd moment. Skute\u010dn\u00e9 za\u0159\u00edzen\u00ed mus\u00ed tak\u00e9 zohlednit ztr\u00e1ty v z\u00e1b\u011bru ozuben\u00fdch kol, ztr\u00e1ty v lo\u017eisk\u00e1ch, mazac\u00ed podm\u00ednky a dal\u0161\u00ed faktory.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/10\/fixed-ring-gear-ratio.png\" alt=\"Planetov\u00e1 redukce s pevn\u00fdm ozuben\u00fdm v\u011bncem\" class=\"wp-image-17470\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-the-same-gears-produce-completely-different-results-when-a-different-member-is-fixed\">4. Stejn\u00e1 ozuben\u00e1 kola produkuj\u00ed zcela odli\u0161n\u00e9 v\u00fdsledky, kdy\u017e je upevn\u011bn jin\u00fd \u010dlen<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Pevn\u00fd \u010dlen<\/th><th>Vstup<\/th><th>V\u00fdstup<\/th><th>Typick\u00fd v\u00fdsledek<\/th><th>Charakteristick\u00fd<\/th><\/tr><\/thead><tbody><tr><td>Ozuben\u00fd v\u011bnec<\/td><td>Slune\u010dn\u00ed v\u00fdstroj<\/td><td>Planet\u00e1rn\u00ed nosi\u010d<\/td><td>Redukce, stejn\u00fd sm\u011br<\/td><td>Nejb\u011b\u017en\u011bj\u0161\u00ed uspo\u0159\u00e1d\u00e1n\u00ed planet\u00e1rn\u00ed redukce<\/td><\/tr><tr><td>Slune\u010dn\u00ed v\u00fdstroj<\/td><td>Ozuben\u00fd v\u011bnec<\/td><td>Planet\u00e1rn\u00ed nosi\u010d<\/td><td>Redukce, stejn\u00fd sm\u011br<\/td><td>M\u00edrn\u011bj\u0161\u00ed pom\u011br<\/td><\/tr><tr><td>Planet\u00e1rn\u00ed nosi\u010d<\/td><td>Slune\u010dn\u00ed v\u00fdstroj<\/td><td>Ozuben\u00fd v\u011bnec<\/td><td>Opa\u010dn\u00e1 rotace<\/td><td>Formuje reverzn\u00ed p\u0159evod s pevnou osou<\/td><\/tr><tr><td>\u017d\u00e1dn\u00fd; dva \u010dlenov\u00e9 jsou ovl\u00e1d\u00e1ni<\/td><td>Z\u00e1le\u017e\u00ed na zp\u016fsobu ovl\u00e1d\u00e1n\u00ed<\/td><td>T\u0159et\u00ed \u010dlen<\/td><td>Variabiln\u00ed pom\u011br<\/td><td>Z\u00e1klady automatick\u00fdch p\u0159evodovek a syst\u00e9m\u016f d\u011blen\u00ed v\u00fdkonu<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u010cast\u00fdm nedorozum\u011bn\u00edm je, \u017ee planetov\u00e9 soukol\u00ed m\u00e1 p\u0159irozen\u011b pouze jeden p\u0159evodov\u00fd pom\u011br. P\u0159evodov\u00fd pom\u011br je ur\u010den nejen po\u010dtem zub\u016f, ale tak\u00e9 t\u00edm, kter\u00fd \u010dlen je pevn\u00fd, kter\u00fd je vstupn\u00ed a kter\u00fd v\u00fdstupn\u00ed.<\/p>\n\n\n\n<p>Pokud se v\u0161echny t\u0159i hlavn\u00ed \u010dleny mohou pohybovat a jeden \u010dlen je ovl\u00e1d\u00e1n spojkou, brzdou nebo jin\u00fdm zdrojem energie, m\u016f\u017ee syst\u00e9m poskytovat slo\u017eit\u011bj\u0161\u00ed v\u00edcestup\u0148ovou p\u0159evodovku nebo funkce rozd\u011blen\u00ed v\u00fdkonu. To je d\u016fle\u017eit\u00fd d\u016fvod, pro\u010d se planetov\u00e9 p\u0159evodovky \u0161iroce pou\u017e\u00edvaj\u00ed v automatick\u00fdch p\u0159evodovk\u00e1ch a hybridn\u00edch mechanismech s rozd\u011blen\u00edm v\u00fdkonu.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/10\/planetary-gear-configurations.png\" alt=\"R\u016fzn\u00e9 vztahy planetov\u00fdch p\u0159evod\u016f vznikl\u00e9 zm\u011bnou pevn\u00e9ho \u010dlenu\" class=\"wp-image-17471\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-why-can-a-planetary-gear-set-transmit-high-torque-in-such-a-small-space\">5. Pro\u010d dok\u00e1\u017ee planetov\u00e1 p\u0159evodovka p\u0159en\u00e1\u0161et vysok\u00fd to\u010div\u00fd moment v tak mal\u00e9m prostoru?<\/h2>\n\n\n\n<p>D\u016fvod nen\u00ed z\u00e1hadn\u00fd. Kl\u00ed\u010dem je \u201ev\u00edce simult\u00e1nn\u00edch bod\u016f s\u00edt\u011b plus koaxi\u00e1ln\u00ed uspo\u0159\u00e1d\u00e1n\u00ed\u201c.<\/p>\n\n\n\n<p>U b\u011b\u017en\u00e9ho p\u00e1ru ozuben\u00fdch kol je hlavn\u00ed zat\u00ed\u017een\u00ed soust\u0159ed\u011bno na jeden p\u00e1r, kter\u00fd do sebe zab\u00edr\u00e1. V planetov\u00e9m mechanismu m\u016f\u017ee n\u011bkolik planetov\u00fdch kol zab\u00edrat s centr\u00e1ln\u00edm a korunov\u00fdm kolem sou\u010dasn\u011b. Pokud je konstrukce vhodn\u00e1 a rozlo\u017een\u00ed zat\u00ed\u017een\u00ed je rovnom\u011brn\u00e9, m\u016f\u017ee b\u00fdt vstupn\u00ed kroutic\u00ed moment sd\u00edlen mezi v\u00edce planetov\u00fdch kol.<\/p>\n\n\n\n<p>Z\u00e1rove\u0148 mohou b\u00fdt centr\u00e1ln\u00ed kolo, korunov\u00e9 kolo a una\u0161e\u010d planetov\u00fdch kol uspo\u0159\u00e1d\u00e1ny na stejn\u00e9 ose. Vstupn\u00ed a v\u00fdstupn\u00ed h\u0159\u00eddele nemus\u00ed b\u00fdt bo\u010dn\u011b posunuty, jako je tomu u b\u011b\u017en\u00e9ho reduktoru s paraleln\u00edmi h\u0159\u00eddeli. V\u00fdsledkem je vy\u0161\u0161\u00ed hustota to\u010div\u00e9ho momentu a kompaktn\u011bj\u0161\u00ed uspo\u0159\u00e1d\u00e1n\u00ed p\u0159i podobn\u00e9 celkov\u00e9 velikosti.<\/p>\n\n\n\n<p>Pojem \u201ev\u00edce planetov\u00fdch p\u0159evod\u016f\u201c by se v\u0161ak nem\u011bl ch\u00e1pat p\u0159\u00edli\u0161 zjednodu\u0161en\u011b.<\/p>\n\n\n\n<p>Zv\u00fd\u0161en\u00ed po\u010dtu planetov\u00fdch p\u0159evodovek nem\u011bn\u00ed teoretick\u00fd p\u0159evodov\u00fd pom\u011br, ale to neznamen\u00e1, \u017ee zat\u00ed\u017een\u00ed bude automaticky rovnom\u011brn\u011b rozlo\u017eeno. V\u00fdrobn\u00ed chyby, chyby stoup\u00e1n\u00ed, v\u016fle lo\u017eiska, p\u0159esnost polohov\u00e1n\u00ed planetov\u00fdch \u010dep\u016f a struktur\u00e1ln\u00ed deformace - to v\u0161e ovliv\u0148uje rozd\u011blen\u00ed zat\u00ed\u017een\u00ed. Planetov\u00e9 p\u0159evodovky pro vysok\u00e9 zat\u00ed\u017een\u00ed \u010dasto vy\u017eaduj\u00ed specializovanou konstrukci pro rozd\u011blen\u00ed zat\u00ed\u017een\u00ed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/10\/planetary-gear-load-sharing.png\" alt=\"V\u00edce planetov\u00fdch ozuben\u00fdch kol zab\u00edr\u00e1 sou\u010dasn\u011b a sd\u00edl\u00ed zat\u00ed\u017een\u00ed\" class=\"wp-image-17472\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"6-why-are-planetary-gears-particularly-popular-in-automatic-transmissions\">6. Pro\u010d jsou planetov\u00e9 p\u0159evodovky obzvl\u00e1\u0161t\u011b obl\u00edben\u00e9 v automatick\u00fdch p\u0159evodovk\u00e1ch?<\/h2>\n\n\n\n<p>Planetov\u00e1 p\u0159evodovka m\u00e1 v\u00fdhodu, kterou je pro b\u011b\u017en\u00e9 soukol\u00ed s pevnou osou obt\u00ed\u017en\u00e9 z\u00e1rove\u0148 poskytnout: spojky a brzdy mohou ovl\u00e1dat spojen\u00ed a blokov\u00e1n\u00ed r\u016fzn\u00fdch \u010dlen\u016f, co\u017e umo\u017e\u0148uje stejn\u00e9 p\u0159evodovce vytv\u00e1\u0159et v\u00edce p\u0159evodov\u00fdch pom\u011br\u016f.<\/p>\n\n\n\n<p>Jako koncep\u010dn\u00ed p\u0159\u00edklad m\u016f\u017ee jedna poloha p\u0159evodov\u00e9ho stupn\u011b fixovat korunov\u00e9 kolo, pou\u017e\u00edvat centr\u00e1ln\u00ed kolo jako vstup a nosi\u010d planetov\u00fdch kol jako v\u00fdstup. Jin\u00e1 poloha p\u0159evodov\u00e9ho stupn\u011b m\u011bn\u00ed zablokovan\u00fd \u010dlen. Spojka m\u016f\u017ee tak\u00e9 zablokovat dva \u010dleny dohromady a vytvo\u0159it tak stav p\u0159\u00edm\u00e9ho pohonu bl\u00edzk\u00fd 1:1.<\/p>\n\n\n\n<p>To znamen\u00e1, \u017ee p\u0159evodovka nepot\u0159ebuje pro ka\u017edou p\u0159evodovou pozici zcela samostatn\u00fd p\u00e1r ozuben\u00fdch kol s pevnou osou. Jej\u00ed konstrukce m\u016f\u017ee b\u00fdt kompaktn\u011bj\u0161\u00ed a logika \u0159azen\u00ed flexibiln\u011bj\u0161\u00ed.<\/p>\n\n\n\n<p>Je t\u0159eba zd\u016fraznit, \u017ee modern\u00ed automatick\u00e9 p\u0159evodovky obvykle pou\u017e\u00edvaj\u00ed slo\u017een\u00e9 planetov\u00e9 soukol\u00ed, v\u00edce planetov\u00fdch \u0159ad a kombinace n\u011bkolika spojek. Jejich skute\u010dn\u00e9 v\u00fdpo\u010dty p\u0159evodov\u00fdch pom\u011br\u016f jsou mnohem slo\u017eit\u011bj\u0161\u00ed ne\u017e u jedin\u00e9ho jednoduch\u00e9ho planetov\u00e9ho soukol\u00ed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/10\/automatic-transmission-planetary-gears.png\" alt=\"Planetov\u00e1 p\u0159evodovka v automatick\u00e9 p\u0159evodovce\" class=\"wp-image-17473\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"7-why-do-overhead-cranes-and-construction-machinery-rely-on-planetary-reducers\">7. Pro\u010d se mostov\u00e9 je\u0159\u00e1by a stavebn\u00ed stroje spol\u00e9haj\u00ed na planetov\u00e9 reduktory?<\/h2>\n\n\n\n<p>Planetov\u00e9 p\u0159evody se nach\u00e1zej\u00ed v pojezdov\u00fdch motorech bagr\u016f, pojezdov\u00fdch mechanismech mostov\u00fdch je\u0159\u00e1b\u016f, n\u011bkter\u00fdch oto\u010dn\u00fdch mechanismech, <a href=\"https:\/\/www.dgcrane.com\/cs\/overhead-crane-gearbox\/\">p\u0159evodovky navij\u00e1k\u016f mostov\u00fdch je\u0159\u00e1b\u016f<\/a>a velk\u00e9 pr\u016fmyslov\u00e9 pohony.<\/p>\n\n\n\n<p>Mostov\u00e9 je\u0159\u00e1by a stavebn\u00ed stroje mus\u00ed \u0159e\u0161it typick\u00fd konflikt: hydraulick\u00fd motor nebo elektromotor b\u011b\u017e\u00ed relativn\u011b vysokou rychlost\u00ed, zat\u00edmco hnac\u00ed kolo, <a href=\"https:\/\/www.dgcrane.com\/cs\/products\/rope-drums\/\">lanov\u00fd buben<\/a>, nebo oto\u010dn\u00fd mechanismus vy\u017eaduje n\u00edzkou rychlost a vysok\u00fd to\u010div\u00fd moment. Z\u00e1rove\u0148 je instala\u010dn\u00ed prostor \u010dasto velmi omezen\u00fd.<\/p>\n\n\n\n<p>Planetov\u00fd reduktor je pro tyto provozn\u00ed podm\u00ednky dob\u0159e vhodn\u00fd: je souos\u00fd a kompaktn\u00ed, m\u016f\u017ee poskytovat velk\u00fd reduk\u010dn\u00ed pom\u011br a m\u016f\u017ee pou\u017e\u00edvat v\u00edce stup\u0148\u016f zapojen\u00fdch do s\u00e9rie pro dal\u0161\u00ed sn\u00ed\u017een\u00ed ot\u00e1\u010dek a zv\u00fd\u0161en\u00ed v\u00fdstupn\u00edho to\u010div\u00e9ho momentu.<\/p>\n\n\n\n<p>Planetov\u00e1 p\u0159evodovka v\u0161ak nen\u00ed univerz\u00e1ln\u00edm \u0159e\u0161en\u00edm, kter\u00e9 funguje pouhou instalac\u00ed. Samotn\u00fd n\u00e1vrh mus\u00ed tak\u00e9 kontrolovat pevnost v kontaktu zub\u016f s povrchem, ohybovou pevnost paty zubu, \u017eivotnost lo\u017eiska, zat\u00ed\u017een\u00ed planetov\u00e9ho \u010depu, maz\u00e1n\u00ed, tepelnou rovnov\u00e1hu, \u00fa\u010dinnost, r\u00e1zov\u00e9 zat\u00ed\u017een\u00ed a po\u017eadavky na brzd\u011bn\u00ed.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/10\/crane-planetary-reducer-applications.png\" alt=\"Planetov\u00e9 reduktory v mostov\u00fdch je\u0159\u00e1bech a stavebn\u00edch stroj\u00edch\" class=\"wp-image-17474\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/10\/planetary-reducer-structure.png\" alt=\"Struktura a pou\u017eit\u00ed planetov\u00e9ho reduktoru\" class=\"wp-image-17475\"\/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"8-an-easily-overlooked-geometric-condition-tooth-counts-cannot-be-chosen-arbitrarily\">8. Snadno p\u0159ehl\u00ed\u017een\u00e1 geometrick\u00e1 podm\u00ednka: Po\u010det zub\u016f nelze volit libovoln\u011b<\/h2>\n\n\n\n<p>V jednoduch\u00e9m planetov\u00e9m soukol\u00ed mus\u00ed centr\u00e1ln\u00ed kolo, planetov\u00e1 kola a korunov\u00e9 kolo spl\u0148ovat z\u00e1kladn\u00ed geometrick\u00fd vztah. Pro jednoduch\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed se stejn\u00fdm modulem a standardn\u00edm z\u00e1b\u011brem je b\u011b\u017en\u00fd vztah:<\/p>\n\n\n\n<div class=\"planetary-equation\" role=\"math\" aria-label=\"Z r equals Z s plus two Z p\" style=\"display:flex;justify-content:center;align-items:center;gap:.45em;margin:1.5em 0;font-family:Georgia,'Times New Roman',serif;font-size:1.3em;\"><span>Z<sub>r<\/sub> = Z<sub>s<\/sub> + 2Z<sub>str.<\/sub><\/span><\/div>\n\n\n\n<p>Pokud m\u00e1 centr\u00e1ln\u00ed kolo 20 zub\u016f a planetov\u00e9 kolo m\u00e1 tak\u00e9 20 zub\u016f, pak korunov\u00e9 kolo obvykle pot\u0159ebuje 60 zub\u016f, aby splnilo vztah mezi osovou vzd\u00e1lenost\u00ed.<\/p>\n\n\n\n<p>Pokud m\u00e1 b\u00fdt rovnom\u011brn\u011b uspo\u0159\u00e1d\u00e1no v\u00edce planetov\u00fdch kol, je nutn\u00e9 zkontrolovat tak\u00e9 f\u00e1zi mont\u00e1\u017ee a p\u0159\u00edpadn\u00e9 geometrick\u00e9 p\u0159esahy mezi sousedn\u00edmi planetov\u00fdmi koly. Jin\u00fdmi slovy, v\u00fdpo\u010det p\u0159evodov\u00e9ho pom\u011bru je pouze prvn\u00edm krokem. Dal\u0161\u00ed n\u00e1vrh je nutn\u00fd, aby bylo soukol\u00ed vyrobiteln\u00e9, smontovateln\u00e9 a schopn\u00e9 un\u00e9st zat\u00ed\u017een\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"9-four-statements-are-enough-to-understand-a-planetary-gear-set\">9. \u010cty\u0159i tvrzen\u00ed sta\u010d\u00ed k pochopen\u00ed planetov\u00e9ho p\u0159evodu<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Centr\u00e1ln\u00ed kolo je uprost\u0159ed; planetov\u00e1 kola se ot\u00e1\u010dej\u00ed kolem sv\u00fdch vlastn\u00edch os a ot\u00e1\u010dej\u00ed se kolem Slunce; korunov\u00e9 kolo je obklopuje; a nosi\u010d planetov\u00fdch kol nese planetov\u00e1 kola jako skupinu.<\/li>\n\n\n\n<li>Po\u010det planetov\u00fdch kol obecn\u011b nem\u011bn\u00ed teoretick\u00fd p\u0159evodov\u00fd pom\u011br, ale kola mohou p\u0159i spr\u00e1vn\u00e9m n\u00e1vrhu rozlo\u017een\u00ed zat\u00ed\u017een\u00ed rozd\u011blit zat\u00ed\u017een\u00ed.<\/li>\n\n\n\n<li>Stejn\u00e1 planetov\u00e1 soukol\u00ed m\u016f\u017ee vytv\u00e1\u0159et r\u016fzn\u00e9 pom\u011bry redukce, zv\u00fd\u0161en\u00ed rychlosti nebo reverzace zm\u011bnou pevn\u00e9ho \u010dlenu, vstupn\u00edho \u010dlenu a v\u00fdstupn\u00edho \u010dlenu.<\/li>\n\n\n\n<li>Nejb\u011b\u017en\u011bj\u0161\u00ed uspo\u0159\u00e1d\u00e1n\u00ed reduktoru upev\u0148uje ozuben\u00fd v\u011bnec, pou\u017e\u00edv\u00e1 centr\u00e1ln\u00ed kolo jako vstup a un\u00e1\u0161e\u010d planetov\u00fdch kol jako v\u00fdstup. V tomto p\u0159\u00edpad\u011b, <span class=\"math-inline\" role=\"math\" style=\"white-space:nowrap;font-family:Georgia,'Times New Roman',serif;\">i = 1 + Z\u1d63 \/ Z\u209b<\/span>.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"final-note-its-real-strength-is-not-the-number-of-gears-but-the-use-of-degrees-of-freedom\">Z\u00e1v\u011bre\u010dn\u00e1 pozn\u00e1mka: Jeho skute\u010dnou silou nen\u00ed po\u010det p\u0159evodov\u00fdch stup\u0148\u016f, ale vyu\u017eit\u00ed stup\u0148\u016f volnosti<\/h2>\n\n\n\n<p>B\u011b\u017en\u00fd ozuben\u00fd p\u0159evod je sp\u00ed\u0161e jako dva lid\u00e9 dr\u017e\u00edc\u00ed se za ruce: jeden se ot\u00e1\u010d\u00ed a druh\u00fd ho n\u00e1sleduje, tak\u017ee vztah je p\u0159\u00edm\u00fd. Planetov\u00e9 soukol\u00ed je sp\u00ed\u0161e jako skupina lid\u00ed pohybuj\u00edc\u00edch se spole\u010dn\u011b na rotuj\u00edc\u00ed plo\u0161in\u011b. Samotn\u00e1 plo\u0161ina se m\u016f\u017ee pohybovat a m\u016f\u017ee se pohybovat i vn\u011bj\u0161\u00ed krou\u017eek, tak\u017ee stejn\u00e1 kombinace p\u0159evod\u016f m\u016f\u017ee v\u00e9st ke zcela odli\u0161n\u00fdm v\u00fdsledk\u016fm.<\/p>\n\n\n\n<p>Toto je nejzaj\u00edmav\u011bj\u0161\u00ed vlastnost planetov\u00e9ho p\u0159evodu. D\u00edky \u010dty\u0159em z\u00e1kladn\u00edm komponent\u016fm \u2013 centr\u00e1ln\u00edmu kolu, planetov\u00fdm ozuben\u00edm, korunov\u00e9mu kolu a una\u0161e\u010di planet \u2013 kombinuje kompaktn\u00ed konstrukci, v\u00edce p\u0159evodov\u00fdch pom\u011br\u016f, souos\u00fd p\u0159evod a vysokou hustotu to\u010div\u00e9ho momentu v jednom mechanismu.<\/p>\n\n\n\n<p>A\u017e p\u0159\u00ed\u0161t\u011b uvid\u00edte planetov\u00fd p\u0159evod na stavebn\u00edch stroj\u00edch, polo\u017ete si nejprve t\u0159i ot\u00e1zky: Kter\u00fd \u010dlen je pevn\u00fd? Kter\u00fd \u010dlen je vstupn\u00ed? Kter\u00fd \u010dlen je v\u00fdstupn\u00ed? Jakmile si na tyto t\u0159i ot\u00e1zky odpov\u00edte, v podstat\u011b pochop\u00edte, pro\u010d se planetov\u00e9 soukol\u00ed ot\u00e1\u010d\u00ed tak, jak se ot\u00e1\u010d\u00ed.<\/p>\n\n\n\n<p>Pozn\u00e1mka: Tento \u010dl\u00e1nek je zam\u00fd\u0161len jako \u00favod do mechanick\u00fdch princip\u016f. Rovnice jsou zalo\u017eeny na kinematick\u00fdch vztaz\u00edch ide\u00e1ln\u00ed jednoduch\u00e9 planetov\u00e9 soukol\u00ed. Skute\u010dn\u00e1 konstrukce p\u0159evodovky mostov\u00e9ho je\u0159\u00e1bu mus\u00ed tak\u00e9 zohled\u0148ovat modifikaci profilu zub\u016f, p\u0159esnost v\u00fdroby, rozd\u011blen\u00ed zat\u00ed\u017een\u00ed, pevnost, \u00fa\u010dinnost, maz\u00e1n\u00ed, lo\u017eiska a tepelnou rovnov\u00e1hu.<\/p>","protected":false},"excerpt":{"rendered":"Rozeberte automatickou p\u0159evodovku, planetovou p\u0159evodovku mostov\u00e9ho je\u0159\u00e1bu nebo n\u011bkter\u00e9 robotick\u00e9 reduktory a opakovan\u011b uvid\u00edte velmi charakteristickou strukturu ozuben\u00fdch kol: mal\u00e9 ozuben\u00e9 kolo uprost\u0159ed, n\u011bkolik mal\u00fdch ozuben\u00fdch kol kolem n\u011bj a vn\u011bj\u0161\u00ed krou\u017eek s vnit\u0159n\u00edmi zuby. Vypad\u00e1 to jako nic jin\u00e9ho ne\u017e \u201en\u011bkolik ozuben\u00fdch kol uspo\u0159\u00e1dan\u00fdch do kruhu\u201c, [\u2026]","protected":false},"featured_media":17479,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[351],"posts_tag":[1069,206,6],"class_list":["post-17466","posts","type-posts","status-publish","has-post-thumbnail","hentry","posts_category-blog","posts_tag-crane-gearbox","posts_tag-dgcrane","posts_tag-overhead-crane"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/17466"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":9,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/17466\/revisions"}],"predecessor-version":[{"id":17484,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/17466\/revisions\/17484"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/media\/17479"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/media?parent=17466"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/posts_category?post=17466"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/posts_tag?post=17466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}