{"id":49,"count":10,"description":"A <strong>Grue portique<\/strong> is a type of overhead crane where the main bridge girder, which supports the trolley and hoist, is itself supported by freestanding legs that travel on rails at the ground level. From an industrial braking perspective, a gantry crane is a multi-axis system where each axis of motion requires a dedicated, purpose-engineered brake to ensure operational safety and control.    The braking system is typically segmented by function:  <ol>   \t<li><strong>Frein de levage :<\/strong> C'est le composant de s\u00e9curit\u00e9 le plus critique. Il s'agit d'un, <strong>s\u00e9curit\u00e9 int\u00e9gr\u00e9e<\/strong> Frein (actionn\u00e9 par ressort, lib\u00e9r\u00e9 par l'alimentation), souvent un grand frein \u00e0 tambour \u00e9lectro-hydraulique ou un frein \u00e0 disque \u00e9lectromagn\u00e9tique robuste. Son seul but est de maintenir fermement la charge nominale en position statique chaque fois que l'alimentation du moteur est coup\u00e9e, intentionnellement ou en cas de panne de courant, \u00e9vitant ainsi une chute catastrophique de la charge.<\/li>   \t<li><strong>Freins de d\u00e9placement du chariot :<\/strong> Le chariot d\u00e9place le palan horizontalement le long de la poutre principale. Il est \u00e9quip\u00e9 de ses propres freins de s\u00e9curit\u00e9 plus petits. Ces freins assurent une d\u00e9c\u00e9l\u00e9ration dynamique contr\u00f4l\u00e9e pour un positionnement pr\u00e9cis de la charge et agissent \u00e9galement comme freins de stationnement pour maintenir le chariot immobile, emp\u00eachant qu'il ne d\u00e9rive en raison de l\u00e9gers inclinaisons, de jeux dans la transmission ou de forces externes comme le vent.<\/li>   \t<li><strong>Freins de d\u00e9placement du portique (long d\u00e9placement) :<\/strong> Ces freins sont mont\u00e9s sur les roues motrices principales qui d\u00e9placent toute la structure du portique le long de ses rails au niveau du sol. \u00c9tant donn\u00e9 l'immense masse et l'inertie du portique, ce sont des freins puissants (souvent \u00e0 disque ou \u00e0 tambour) responsables d'arr\u00eater la structure en douceur (freinage de service) et de la stationner en toute s\u00e9curit\u00e9. Ils sont \u00e0 s\u00e9curit\u00e9 int\u00e9gr\u00e9e pour emp\u00eacher le portique de rouler en cas de coupure de courant.<\/li>  <\/ol>  For large gantry cranes operating outdoors, such as those in ports and shipyards, an additional layer of braking is often required: <strong>Freins de temp\u00eate<\/strong>. These are ultra-high-force, often hydraulically or mechanically applied rail clamps or wedges that are engaged when the crane is parked during high winds. They are a separate system designed purely for static holding against extreme environmental forces and are not used for dynamic stopping.    In essence, the safe operation of a gantry crane is not dependent on a single brake, but on a coordinated system of specialized brakes, each designed for the unique forces and safety requirements of its specific axis of motion.","link":"https:\/\/www.takebrakes.com\/fr\/tag\/gantry-crane\/","name":"Grue portique","slug":"gantry-crane","taxonomy":"post_tag","meta":[],"_links":{"self":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/tags\/49","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=49"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}