{"id":37,"count":22,"description":"A <strong>Levantamento<\/strong> is a mechanical device used for lifting and lowering a load, typically with a drum or lift-wheel around which a rope or chain is wrapped. In the context of industrial brakes, the hoist application is defined by one paramount, non-negotiable requirement: the <strong>absolute prevention of a dropped load<\/strong>.    Consequently, the brake on a hoist is the primary safety device. It is not principally a dynamic or service brake for slowing the load (this is largely managed by the motor and drive); its most critical function is <strong>reten\u00e7\u00e3o est\u00e1tica<\/strong>.    The key characteristics of a hoist brake are:  <ol>   \t<li><strong>Design de Falha Segura:<\/strong>\u00a0Frenos de guincho s\u00e3o universalmente\u00a0<strong>apertado por mola e liberado por energia<\/strong>. Esta \u00e9 a ess\u00eancia da sua natureza \u00e0 prova de falhas. Molas mec\u00e2nicas poderosas fornecem a for\u00e7a para prender o freio por defeito. \u00c9 necess\u00e1ria energia el\u00e9ctrica ou hidr\u00e1ulica para ativamente\u00a0<em>libertar<\/em>\u00a0o freio.<\/li>   \t<li><strong>Princ\u00edpio de Funcionamento:<\/strong>  <ul>   \t<li>Quando o motor do guincho recebe o comando para levantar ou baixar, a bobina do trav\u00e3o \u00e9 energizada no mesmo instante, libertando o trav\u00e3o e permitindo que o motor funcione.<\/li>   \t<li>No momento em que o motor \u00e9 desenergizado (por comando ou por falha de energia), a for\u00e7a de libera\u00e7\u00e3o no trav\u00e3o desaparece. As molas acionam instantaneamente e automaticamente o trav\u00e3o com for\u00e7a total, segurando a carga suspensa numa posi\u00e7\u00e3o est\u00e1tica de forma segura.<\/li>  <\/ul>  <\/li>   \t<li><strong>Localiza\u00e7\u00e3o:<\/strong>\u00a0The brake is typically mounted directly to the non-drive end of the hoist motor, on the high-speed side of the drivetrain before the gearbox. This placement takes advantage of the gearbox's mechanical advantage, meaning a smaller, faster-acting brake can effectively hold the full load torque seen at the drum.<\/li>  <\/ol>  Whether it's a small workshop chain hoist using an integrated DC electromagnetic brake or a massive steel mill crane with a large electro-hydraulic drum brake, the fundamental principle remains the same: the brake's primary and most vital role is to fail into the \"on\" position, guaranteeing that the load will not fall.","link":"https:\/\/www.takebrakes.com\/pt\/tag\/hoist\/","name":"Levantamento","slug":"hoist","taxonomy":"post_tag","meta":[],"_links":{"self":[{"href":"https:\/\/www.takebrakes.com\/pt\/wp-json\/wp\/v2\/tags\/37","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.takebrakes.com\/pt\/wp-json\/wp\/v2\/tags"}],"about":[{"href":"https:\/\/www.takebrakes.com\/pt\/wp-json\/wp\/v2\/taxonomies\/post_tag"}],"wp:post_type":[{"href":"https:\/\/www.takebrakes.com\/pt\/wp-json\/wp\/v2\/posts?tags=37"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}