{"id":349,"date":"2023-06-21T01:28:14","date_gmt":"2023-06-21T01:28:14","guid":{"rendered":"https:\/\/physigeek.com\/pt\/trem-de-engrenagens\/"},"modified":"2023-06-21T01:28:14","modified_gmt":"2023-06-21T01:28:14","slug":"trem-de-engrenagens","status":"publish","type":"post","link":"https:\/\/physigeek.com\/pt\/trem-de-engrenagens\/","title":{"rendered":"Trem de engrenagens"},"content":{"rendered":"<p>Este artigo explica o que s\u00e3o trens de engrenagens e para que s\u00e3o usados. Assim, voc\u00ea encontrar\u00e1 o significado de trem de engrenagens, exemplos de trens de engrenagens, como \u00e9 calculada a rela\u00e7\u00e3o de transmiss\u00e3o de um trem de engrenagens e, por fim, quais s\u00e3o os diferentes tipos de trens de engrenagens. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFQue-es-un-tren-de-engranajes\"><\/span> O que \u00e9 um trem de engrenagens?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Um <strong>trem de engrenagens<\/strong> \u00e9 um mecanismo de transmiss\u00e3o circular que consiste em um conjunto de engrenagens. Em outras palavras, um trem de engrenagens \u00e9 um sistema composto por diversas rodas dentadas interligadas.<\/p>\n<p> O trem de engrenagens permite obter uma rela\u00e7\u00e3o de transmiss\u00e3o muito maior do que uma engrenagem simples. Um trem de engrenagens \u00e9, portanto, usado para aumentar ou diminuir consideravelmente a velocidade angular de um eixo. Por outro lado, uma engrenagem geralmente ocupa mais espa\u00e7o do que uma simples roda dentada. <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"420\" height=\"279\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/train-dengrenages.png\" alt=\"\" class=\"wp-image-6259\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/train-dengrenages-300x199.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/train-dengrenages.png 420w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<p> Ao contr\u00e1rio de outros tipos de mecanismos de transmiss\u00e3o, uma roda dentada n\u00e3o requer um mecanismo de elo, como uma correia ou corrente, mas \u00e9 simplesmente composta por v\u00e1rias rodas dentadas cujos dentes engrenam entre si.<\/p>\n<p> Na engenharia, o trem de engrenagens tem uma ampla variedade de aplica\u00e7\u00f5es. Por exemplo, a caixa de c\u00e2mbio e o diferencial de um carro s\u00e3o trens de engrenagens. Al\u00e9m disso, muitos eletrodom\u00e9sticos possuem um trem de engrenagens integrado para aumentar ou diminuir a velocidade de rota\u00e7\u00e3o. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejemplo-de-tren-de-engranajes\"><\/span>Exemplo de trem de engrenagens<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Depois de ver a defini\u00e7\u00e3o de engrenagem, um exemplo desse tipo de engrenagem \u00e9 explicado a seguir para uma compreens\u00e3o completa do conceito.<\/p>\n<p> Na imagem a seguir voc\u00ea pode ver um exemplo de trem de engrenagens, mais precisamente, \u00e9 um trem composto por cinco marchas: a marcha de entrada, uma marcha dupla, uma marcha lenta e a marcha de sa\u00edda. sa\u00edda. <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"294\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exemple-de-train-dengrenages.png\" alt=\"exemplo de trem de engrenagens\" class=\"wp-image-6265\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exemple-de-train-dengrenages-300x147.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exemple-de-train-dengrenages.png 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><figcaption class=\"wp-element-caption\"><\/figcaption><\/figure>\n<p> O mecanismo come\u00e7a na roda de entrada, que \u00e9 a roda esquerda. Quando o movimento rotacional \u00e9 aplicado \u00e0 engrenagem de entrada, as engrenagens subsequentes tamb\u00e9m giram, uma vez que as rodas est\u00e3o engrenadas.<\/p>\n<p> Neste caso, a velocidade de rota\u00e7\u00e3o \u00e9 aumentada em duas etapas. Primeiro, a roda de entrada tem mais dentes que a sua engrenagem, ent\u00e3o a velocidade angular aumenta. Esta engrenagem \u00e9 uma engrenagem dupla que possui outra engrenagem acoplada ao seu eixo, sendo que a referida engrenagem tamb\u00e9m possui mais dentes que a engrenagem de sa\u00edda, portanto a velocidade angular aumenta pela segunda vez.<\/p>\n<p> Por\u00e9m, entre a roda de sa\u00edda e a roda dupla existe uma engrenagem intermedi\u00e1ria que serve para alternar o sentido de rota\u00e7\u00e3o da roda de sa\u00edda, ou seja, a fun\u00e7\u00e3o desta engrenagem \u00e9 simplesmente mudar o sentido de rota\u00e7\u00e3o da \u00faltima roda. Portanto, para determinar se a velocidade angular est\u00e1 aumentando ou diminuindo, os dentes da engrenagem dupla s\u00e3o comparados diretamente com os dentes da engrenagem de sa\u00edda. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Relacion-de-transmision-de-un-tren-de-engranajes\"><\/span> Rela\u00e7\u00e3o de transmiss\u00e3o de um trem de engrenagens<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> A <strong>rela\u00e7\u00e3o de transmiss\u00e3o de um trem de engrenagens<\/strong> \u00e9 a raz\u00e3o entre a velocidade angular de sa\u00edda e a velocidade angular de entrada. Portanto, a rela\u00e7\u00e3o de transmiss\u00e3o de um trem de engrenagens \u00e9 o quociente entre as velocidades angulares de sa\u00edda e de entrada.<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-66c4d99324175c800178536b757a21da_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"i=\\cfrac{\\omega_{\\text{output}}}{\\omega_{\\text{input}}}}\" title=\"Rendered by QuickLaTeX.com\" height=\"40\" width=\"85\" style=\"vertical-align: -18px;\"><\/p>\n<\/p>\n<p> A rela\u00e7\u00e3o de transmiss\u00e3o de um trem de engrenagens tamb\u00e9m pode ser calculada dividindo o n\u00famero de dentes das rodas motrizes pelo n\u00famero de dentes das rodas motrizes. A f\u00f3rmula para a rela\u00e7\u00e3o de transmiss\u00e3o para um trem de engrenagens \u00e9, portanto:<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-bb2bc286ad11d56dd70770f2e815a07d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"i=\\cfrac{\\displaystyle \\prod_{k=1}^n Z_{\\text{conductive}_k}}{\\displaystyle \\prod_{k=1}^n Z_{\\text{conductive}_k} }\" title=\"Rendered by QuickLaTeX.com\" height=\"108\" width=\"148\" style=\"vertical-align: -49px;\"><\/p>\n<\/p>\n<p> Lembre-se de que as engrenagens intermedi\u00e1rias devem ser colocadas tanto no numerador quanto no denominador da f\u00f3rmula, uma vez que s\u00e3o rodas motrizes e motrizes.<\/p>\n<p> Da mesma forma, a rela\u00e7\u00e3o de transmiss\u00e3o total de um trem de engrenagens \u00e9 equivalente ao produto das rela\u00e7\u00f5es de transmiss\u00e3o entre pares de engrenagens.<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-7bb4c667ed86f37bd0e9604364ae9fb5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle i=\\prod_{k=1}^n i_k=i_1\\cdot i_2\\cdot i_3\\cdot \\ldots \\cdot i_n\" title=\"Rendered by QuickLaTeX.com\" height=\"50\" width=\"223\" style=\"vertical-align: -22px;\"><\/p>\n<\/p>\n<p> Como exemplo, a rela\u00e7\u00e3o de transmiss\u00e3o do seguinte trem de engrenagens \u00e9 calculada abaixo: <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"300\" height=\"298\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/rapport-de-transmission-du-train-dengrenages.png\" alt=\"rela\u00e7\u00e3o de transmiss\u00e3o de um trem de engrenagens\" class=\"wp-image-6200\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/rapport-de-transmission-du-train-dengrenages.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/rapport-de-transmission-du-train-dengrenages-150x150.png 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-74814cd34de63b10b49a65b2952a43d5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"i=\\cfrac{\\displaystyle \\prod_{k=1}^n Z_{\\text{conductive}_k}}{\\displaystyle \\prod_{k=1}^n Z_{\\text{conductive}_k} }=\\cfrac{12\\cdot 12}{24\\cdot 18}=0,33\" title=\"Rendered by QuickLaTeX.com\" height=\"108\" width=\"279\" style=\"vertical-align: -49px;\"><\/p>\n<\/p>\n<p> Neste caso, a rela\u00e7\u00e3o de transmiss\u00e3o do trem de engrenagens \u00e9 menor que 1, o que significa que atua como mecanismo de redu\u00e7\u00e3o, ou seja, a velocidade angular de sa\u00edda \u00e9 menor que a velocidade angular de entrada. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tipos-de-trenes-de-engranajes\"><\/span>Tipos de trens de engrenagens<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Os trens de engrenagens podem ser classificados nos seguintes tipos:<\/p>\n<ul style=\"color:#4fd12f; font-weight: bold;\">\n<li style=\"margin-bottom:20px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Trem de engrenagens de eixo fixo<\/strong> \u2013 Os eixos das rodas s\u00e3o fixos. Dois subtipos podem ser distinguidos:<\/span>\n<ul style=\"color:#4fd12f; font-weight: bold; list-style-type:circle; margin-top:12px; margin-left:8%\">\n<li style=\"margin-bottom:12px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Trem de engrenagens simples<\/strong> : \u00c9 composto apenas por rodas que engrenam entre si, ou seja, cada eixo \u00e9 montado em uma \u00fanica engrenagem.<\/span><\/li>\n<li style=\"margin-bottom:12px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Trem de engrenagens composto<\/strong> \u2013 O trem de engrenagens possui pelo menos uma roda dupla. Ou seja, duas engrenagens s\u00e3o montadas em um dos eixos.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"margin-bottom:20px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Trem de engrenagens planet\u00e1rias (ou epic\u00edclicas)<\/strong> \u2013 O eixo de algumas engrenagens n\u00e3o \u00e9 fixo, mas pode ser movido. Para uma roda (sat\u00e9lite) girar em torno de outra roda.<\/span> <\/li>\n<\/ul>\n<div class=\"wp-block-columns is-layout-flex wp-container-88 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#4fd12f\"> <strong>trem de engrenagem \u00fanica<\/strong> <\/p>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/train-a-engrenages-simples.png\" alt=\"trem de engrenagem \u00fanica\" class=\"wp-image-6272\" width=\"255\" height=\"191\"><\/figure>\n<\/div>\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#4fd12f\"> <strong>trem de engrenagens composto<\/strong> <\/p>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/train-dengrenages-compose.png\" alt=\"trem de engrenagens composto\" class=\"wp-image-6274\" width=\"255\" height=\"191\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/train-dengrenages-compose-300x225.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/train-dengrenages-compose.png 400w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<\/div>\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#4fd12f\"> <strong>trem planet\u00e1rio<\/strong> <\/p>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/train-a-engrenages-planetaires-ou-epicycloidaux.png\" alt=\"Trem de engrenagens planet\u00e1rias (ou epic\u00edclicas)\" class=\"wp-image-6275\" width=\"252\" height=\"189\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/train-a-engrenages-planetaires-ou-epicycloidaux-300x225.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/train-a-engrenages-planetaires-ou-epicycloidaux.png 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Este artigo explica o que s\u00e3o trens de engrenagens e para que s\u00e3o usados. Assim, voc\u00ea encontrar\u00e1 o significado de trem de engrenagens, exemplos de trens de engrenagens, como \u00e9 calculada a rela\u00e7\u00e3o de transmiss\u00e3o de um trem de engrenagens e, por fim, quais s\u00e3o os diferentes tipos de trens de engrenagens. O que \u00e9 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/physigeek.com\/pt\/trem-de-engrenagens\/\"> <span class=\"screen-reader-text\">Trem de engrenagens<\/span> Leia mais &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[10],"tags":[],"class_list":["post-349","post","type-post","status-publish","format-standard","hentry","category-maquinas-e-mecanismos"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u25b7 O que \u00e9 uma engrenagem? (tipos, exemplos e f\u00f3rmula)<\/title>\n<meta name=\"description\" content=\"Aqui voc\u00ea aprender\u00e1 o que \u00e9 uma engrenagem, os diferentes tipos de engrenagens e exemplos de engrenagens.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/physigeek.com\/pt\/trem-de-engrenagens\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u25b7 O que \u00e9 uma engrenagem? 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