{"id":45,"count":1,"description":"In an elevator system, the brake is a non-negotiable, life-critical safety component whose primary function is to hold the elevator car stationary at a floor. Elevators universally employ <strong>fail-safe, spring-applied, DC electromagnetic brakes<\/strong> that are integrated directly with the hoist motor and gearbox, known as the traction machine.    The operational principle is built around inherent safety:  <ol>   \t<li><strong>Maintien statique (\u00c9tat par d\u00e9faut) :<\/strong>\u00a0Powerful mechanical springs exert a constant clamping force on a brake disc or drum coupled to the motor shaft. This is the brake's default, unpowered state, ensuring the elevator car is securely held in place and cannot move.<\/li>   \t<li><strong>Lib\u00e9ration aliment\u00e9e :<\/strong>\u00a0When a user calls the elevator, the control system sends an electrical current to the brake's electromagnetic coil\u00a0<em>au m\u00eame instant<\/em>\u00a0il envoie de l\u2019\u00e9nergie au moteur d\u2019entra\u00eenement. Le champ magn\u00e9tique r\u00e9sultant est suffisamment fort pour surmonter la force du ressort, r\u00e9tractant les plaquettes de frein et lib\u00e9rant le frein juste au moment o\u00f9 le moteur commence \u00e0 tourner.<\/li>   \t<li><strong>Engagement de s\u00e9curit\u00e9 :<\/strong>\u00a0Au moment o\u00f9 la cabine atteint l\u2019\u00e9tage souhait\u00e9, le contr\u00f4leur coupe l\u2019alimentation \u00e0 la fois du moteur et de la bobine du frein. Le champ magn\u00e9tique s\u2019effondre instantan\u00e9ment, et les ressorts r\u00e9appliquent le frein, arr\u00eatant la cabine en douceur et avec pr\u00e9cision, et la maintenant de niveau avec le sol. En cas de panne de courant, cette m\u00eame action se produit, garantissant que l\u2019ascenseur s\u2019arr\u00eate et reste en position en toute s\u00e9curit\u00e9.<\/li>  <\/ol>  Crucially, this primary electromagnetic brake is distinct from the elevator's emergency \"safeties\"\u2014the separate mechanical devices that are triggered by an overspeed governor to physically grip the guide rails in the rare event of a rope failure or uncontrolled descent. Modern safety standards (such as ASME A17.1\/CSA B44) mandate extreme redundancy in the primary brake itself, often requiring dual electrical coils or mechanically independent brake calipers to ensure that no single point of failure can compromise the system's holding capability.","link":"https:\/\/www.takebrakes.com\/fr\/tag\/elevator\/","name":"Ascenseur","slug":"elevator","taxonomy":"post_tag","meta":[],"_links":{"self":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/tags\/45","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=45"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}