{"id":37,"count":22,"description":"A <strong>Palans<\/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>maintien statique<\/strong>.    The key characteristics of a hoist brake are:  <ol>   \t<li><strong>Conception de s\u00e9curit\u00e9 fail-safe :<\/strong>\u00a0Les freins de levage sont universellement\u00a0<strong>spring-appliqu\u00e9 et lib\u00e9r\u00e9 par l'\u00e9nergie<\/strong>. C'est l'essence de leur nature fail-safe. Des ressorts m\u00e9caniques puissants fournissent la force pour bloquer le frein par d\u00e9faut. Une puissance \u00e9lectrique ou hydraulique est requise pour activer\u00a0<em>release<\/em>\u00a0le frein.<\/li>   \t<li><strong>Principe de fonctionnement\u00a0:<\/strong>  <ul>   \t<li>Lorsque le moteur du palan est command\u00e9 pour lever ou abaisser, la bobine du frein est aliment\u00e9e \u00e0 l\u2019instant m\u00eame, lib\u00e9rant le frein et permettant au moteur de tourner.<\/li>   \t<li>Au moment o\u00f9 le moteur est mis hors tension (soit par commande, soit par une panne de courant), la force de lib\u00e9ration du frein dispara\u00eet. Les ressorts engagent instantan\u00e9ment et automatiquement le frein avec toute leur force, maintenant fermement la charge suspendue en position statique.<\/li>  <\/ul>  <\/li>   \t<li><strong>Emplacement :<\/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\/fr\/tag\/hoist\/","name":"Palans","slug":"hoist","taxonomy":"post_tag","meta":[],"_links":{"self":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/tags\/37","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/tags"}],"about":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/taxonomies\/post_tag"}],"wp:post_type":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/posts?tags=37"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}