{"id":5820,"date":"2024-12-06T01:29:13","date_gmt":"2024-12-05T17:29:13","guid":{"rendered":"https:\/\/www.hnhlcrane.com\/?post_type=product&p=5820"},"modified":"2025-09-14T23:13:22","modified_gmt":"2025-09-14T15:13:22","slug":"limitador-de-sobrecarga-da-grua","status":"publish","type":"product","link":"https:\/\/www.hnhlcrane.com\/pt\/product\/limitador-de-sobrecarga-da-grua\/","title":{"rendered":"Limitador de sobrecarga da grua"},"content":{"rendered":"
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Vis\u00e3o geral do limitador de sobrecarga para gruas QCX<\/span><\/strong><\/h6>\n

O Limitador de sobrecarga para gruas QCX<\/strong> \u00e9 um dos dispositivos de seguran\u00e7a mais utilizados nas gruas de duas vigas. Foi concebido para aumentar a seguran\u00e7a operacional, evitando a sobrecarga, protegendo assim o equipamento e o pessoal. O sistema \u00e9 normalmente constitu\u00eddo por tr\u00eas componentes principais: a sensor<\/strong>, a caixa de jun\u00e7\u00e3o (caixa do amplificador)<\/strong>e um instrumento de controlo<\/strong>.<\/p>\n

Carater\u00edsticas principais<\/span><\/strong><\/h6>\n
    \n
  1. Compatibilidade vers\u00e1til de sensores<\/strong>:\n
      \n
    • O instrumento QCX pode trabalhar com v\u00e1rios tipos de sensores e suportar fun\u00e7\u00f5es personalizadas n\u00e3o normalizadas para satisfazer as diversas necessidades dos utilizadores.<\/li>\n<\/ul>\n<\/li>\n
    • Elevada precis\u00e3o<\/strong>:\n
        \n
      • Precis\u00e3o da medi\u00e7\u00e3o: \u22645% F.S.<\/strong><\/li>\n<\/ul>\n<\/li>\n
      • Mecanismos de alerta e alarme<\/strong>:\n
          \n
        • 90% Carga<\/strong>: Alerta de pr\u00e9-aviso.<\/li>\n
        • 105% Carga<\/strong>: O alarme \u00e9 ativado.<\/li>\n
        • 130% Carga<\/strong>: Comando imediato, com sa\u00edda de um contacto de rel\u00e9 para cortar o circuito do motor de eleva\u00e7\u00e3o.<\/li>\n<\/ul>\n<\/li>\n
        • Especifica\u00e7\u00f5es el\u00e9ctricas robustas<\/strong>:\n
            \n
          • Capacidade do rel\u00e9: 10A, 380V<\/strong><\/li>\n
          • Alimenta\u00e7\u00e3o el\u00e9ctrica: AC380V ou 220V\/50Hz<\/strong><\/li>\n<\/ul>\n<\/li>\n
          • Adaptabilidade ambiental<\/strong>:\n
              \n
            • Temperatura de funcionamento: -20\u2103 a +60\u2103<\/strong><\/li>\n
            • Toler\u00e2ncia \u00e0 humidade: 90% RH<\/strong><\/li>\n<\/ul>\n<\/li>\n
            • \u00cdndices de prote\u00e7\u00e3o<\/strong>:\n
                \n
              • Sensor: IP65<\/strong><\/li>\n
              • Instrumento: IP42<\/strong><\/li>\n<\/ul>\n<\/li>\n
              • Carater\u00edsticas opcionais<\/strong>:\n
                  \n
                • Interface 4-20mA<\/strong>: Para uma integra\u00e7\u00e3o perfeita com sistemas externos.<\/li>\n
                • Ecr\u00e3 de grandes dimens\u00f5es<\/strong>: Para aumentar a visibilidade dos dados operacionais.<\/li>\n
                • Sa\u00eddas de controlo adicionais<\/strong>: Para uma funcionalidade alargada.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
                  Fun\u00e7\u00f5es principais<\/span><\/strong><\/h6>\n
                    \n
                  • Monitoriza\u00e7\u00e3o da carga<\/strong>: Apresenta o peso das cargas levantadas em tempo real.<\/li>\n
                  • Sistema de alarme<\/strong>:\n
                      \n
                    • Avisos visuais e sonoros para condi\u00e7\u00f5es de sobrecarga.<\/li>\n
                    • Corte autom\u00e1tico do circuito do motor de eleva\u00e7\u00e3o nos limiares de carga cr\u00edtica.<\/li>\n<\/ul>\n<\/li>\n
                    • Seguran\u00e7a refor\u00e7ada<\/strong>: Evita danos no equipamento e acidentes causados por sobrecarga.<\/li>\n<\/ul>\n
                      Princ\u00edpio de funcionamento<\/span><\/strong><\/h6>\n
                        \n
                      1. Medi\u00e7\u00e3o de peso<\/strong>:\n
                          \n
                        • Quando a grua levanta uma carga, o sensor detecta o peso.<\/li>\n
                        • O sensor converte o peso num pequeno sinal de tens\u00e3o.<\/li>\n<\/ul>\n<\/li>\n
                        • Amplifica\u00e7\u00e3o e processamento de sinais<\/strong>:\n
                            \n
                          • O sinal \u00e9 amplificado na caixa de jun\u00e7\u00e3o e transmitido ao instrumento de controlo.<\/li>\n
                          • Um conversor A\/D de alta resolu\u00e7\u00e3o converte o sinal amplificado num formato digital.<\/li>\n<\/ul>\n<\/li>\n
                          • An\u00e1lise de dados<\/strong>:\n
                              \n
                            • O microcontrolador processa o sinal digital, calcula o peso e compara-o com a capacidade nominal.<\/li>\n<\/ul>\n<\/li>\n
                            • Ac\u00e7\u00f5es de seguran\u00e7a<\/strong>:\n
                                \n
                              • Se o peso atingir 110%<\/strong> da capacidade nominal, o sistema emite um sinal de contacto de rel\u00e9 normalmente fechado.<\/li>\n
                              • Este sinal corta a alimenta\u00e7\u00e3o el\u00e9ctrica do motor de eleva\u00e7\u00e3o para impedir a continua\u00e7\u00e3o da opera\u00e7\u00e3o.<\/li>\n<\/ul>\n<\/li>\n
                              • Ecr\u00e3 e alertas<\/strong>:\n
                                  \n
                                • O sistema apresenta o peso e acciona alarmes (visuais e sonoros) para condi\u00e7\u00f5es de pr\u00e9-aviso e de sobrecarga.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
                                  Aplica\u00e7\u00f5es<\/span><\/strong><\/h6>\n

                                  O Limitador de sobrecarga para gruas QCX<\/strong> \u00e9 essencial em ind\u00fastrias onde a seguran\u00e7a \u00e9 cr\u00edtica, incluindo:<\/p>\n

                                    \n
                                  • Metalurgia<\/strong><\/li>\n
                                  • M\u00e1quinas<\/strong><\/li>\n
                                  • Explora\u00e7\u00e3o mineira<\/strong><\/li>\n
                                  • Caminhos-de-ferro<\/strong><\/li>\n
                                  • Portos<\/strong><\/li>\n
                                  • Armazenagem<\/strong><\/li>\n<\/ul>\n

                                    A sua capacidade de evitar sobrecargas garante opera\u00e7\u00f5es modernizadas e seguras nestes sectores.<\/p>\n

                                    Conclus\u00e3o<\/span><\/strong><\/h6>\n

                                    O Limitador de sobrecarga para gruas QCX<\/strong> \u00e9 um mecanismo de seguran\u00e7a indispens\u00e1vel para pontes rolantes de duas vigas. Ao oferecer uma monitoriza\u00e7\u00e3o precisa da carga, alarmes fi\u00e1veis e cortes autom\u00e1ticos do motor, minimiza os riscos associados \u00e0 sobrecarga e contribui significativamente para as normas modernas de seguran\u00e7a industrial.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

                                    <\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
                                    <\/div>\n
                                    \n

                                     <\/p>\n

                                    Os sensores com caixas e bases de eixo, combinados com instrumentos do tipo QCX-M, s\u00e3o a forma mais comum de limitadores de peso de eleva\u00e7\u00e3o. As dimens\u00f5es dos produtos standard s\u00e3o apresentadas na tabela seguinte. Por exemplo, o modelo de encomenda \u00e9: \u201cQCX-M-4-20t\/170-320\u201d.<\/p>\n

                                    \"\"<\/p>\n

                                    Os sensores para limitadores de grande tonelagem s\u00e3o geralmente personalizados de acordo com os desenhos do utilizador. As dimens\u00f5es da s\u00e9rie na tabela seguinte s\u00e3o resumidas com base nos desenhos de encomenda dos principais fabricantes de gruas chineses para refer\u00eancia quando novos utilizadores encomendam ou concebem produtos n\u00e3o normalizados.<\/p>\n

                                    \"\"<\/p>\n

                                    Os sensores da s\u00e9rie HLF-3A s\u00e3o compostos por duas partes: sensores e almofadas. S\u00e3o instalados principalmente sob as duas extremidades do eixo da polia fixa da grua para suportar a press\u00e3o gerada pelo bloco da polia. Geralmente, s\u00e3o utilizados dois sensores num grupo. S\u00e3o frequentemente utilizados em ocasi\u00f5es com requisitos de precis\u00e3o de medi\u00e7\u00e3o relativamente elevados, tais como balan\u00e7as electr\u00f3nicas de gruas.<\/p>\n

                                    \"\"<\/p>\n<\/div>\n

                                    <\/div>","protected":false},"excerpt":{"rendered":"
                                    Par\u00e2metros principais:<\/span><\/strong><\/h6>\n
                                      \n
                                    • Precis\u00e3o \u22645%F.S.<\/li>\n
                                    • 90% aviso, 105% alarme<\/li>\n
                                    • 130% controlo imediato, sa\u00edda de um conjunto de contactos de rel\u00e9<\/li>\n
                                    • Capacidade 10A, 380V<\/li>\n
                                    • Tens\u00e3o de alimenta\u00e7\u00e3o AC380V ou 220V\/50Hz<\/li>\n
                                    • Temperatura ambiente -20\uff5e+60\u2103\/90%RH<\/li>\n
                                    • Sensor de n\u00edvel de prote\u00e7\u00e3o IP65,<\/li>\n
                                    • Instrumento IP42<\/li>\n<\/ul>","protected":false},"featured_media":5821,"template":"","meta":{"_kad_post_transparent":"default","_kad_post_title":"","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"show","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"product_brand":[],"product_cat":[65],"product_tag":[196,198,109,315,202,200,203,201,204,175,180,211,210,100,231,237,78,82,206,207,194,195,527,73,166,317,184,209,205,282,300,293,294,121,138,94,102,99,301,284,255,136,186,92,69,179,309,213,172,160,323,72,89,522,218,214,217,137,97,288,181,341,120,526,177,124,235,111,110,525,98,239,238,229,524,84,191,299,173,174,189,192,178,106,256,96,251,258,529,151,247,159,254,259,144,125,70,108,188,169,81,523,155,149,141,193,142,319,162,76,75,71,283,161,152,521,269,307,163,190,176,208,115,320,123,147,148,316,216,140,139,145,290,74,197,122,233,187,311,185,164,257,199,153,158,154,232,289,277,95,165,146],"class_list":{"0":"post-5820","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-crane-electrical-parts","7":"product_tag-20ft-container-spreader","8":"product_tag-40ft-container-lifting-frame","9":"product_tag-active-wheel-set","10":"product_tag-aviation-plug","11":"product_tag-billet-clamps","12":"product_tag-billet-crane-clamps","13":"product_tag-billet-crane-clamps-manufacturer","14":"product_tag-billet-lifting-clamp","15":"product_tag-billet-lifting-clamps-china-supplier","16":"product_tag-brake","17":"product_tag-brakes-manufacturer","18":"product_tag-c-type-hook","19":"product_tag-c-type-spreader","20":"product_tag-cast-steel-drum","21":"product_tag-cd-md-wire-rope-electric-hoist","22":"product_tag-chain-hoist","23":"product_tag-china-crane-parts-supplier","24":"product_tag-china-standard-crane-hook","25":"product_tag-coil-c-type-hook","26":"product_tag-coil-hook","27":"product_tag-container-spreader","28":"product_tag-container-spreader-manufacturers","29":"product_tag-coupling-manufacturercardan-coupling","30":"product_tag-crane-accessories","31":"product_tag-crane-and-hoist-motor","32":"product_tag-crane-aviation-plug","33":"product_tag-crane-brake","34":"product_tag-crane-c-hook","35":"product_tag-crane-c-type-spreader","36":"product_tag-crane-cable-trolley","37":"product_tag-crane-control-cabinet","38":"product_tag-crane-control-handle","39":"product_tag-crane-controls","40":"product_tag-crane-coupling","41":"product_tag-crane-decelerators","42":"product_tag-crane-drum","43":"product_tag-crane-drum-assembly","44":"product_tag-crane-drum-manufacturer","45":"product_tag-crane-electrical-control-cabinet","46":"product_tag-crane-electrical-parts","47":"product_tag-crane-end-beam-manufacturers","48":"product_tag-crane-gearbox","49":"product_tag-crane-grab","50":"product_tag-crane-hook","51":"product_tag-crane-hooks","52":"product_tag-crane-hydraulic-disc-brake","53":"product_tag-crane-limit-switch","54":"product_tag-crane-magnets","55":"product_tag-crane-motor","56":"product_tag-crane-motors","57":"product_tag-crane-overload-limiter","58":"product_tag-crane-parts","59":"product_tag-crane-pulley","60":"product_tag-crane-pulley-suppliereuropean-hook-pulley","61":"product_tag-crane-rail-clamp","62":"product_tag-crane-rail-clips","63":"product_tag-crane-rail-fixing-device","64":"product_tag-crane-reducer","65":"product_tag-crane-reel","66":"product_tag-crane-remote-controller","67":"product_tag-crane-safety-brakes","68":"product_tag-crane-sound-and-light-alarm","69":"product_tag-crane-wheel","70":"product_tag-crane-wheels-manufacturer","71":"product_tag-disc-brakes","72":"product_tag-disc-couplings","73":"product_tag-double-girder-wire-rope-electric-hoist","74":"product_tag-driven-wheel-group","75":"product_tag-driving-wheel-set","76":"product_tag-drs-wheel-blocks","77":"product_tag-drum-processing","78":"product_tag-electric-chain-hoist-china-distributor","79":"product_tag-electric-chain-hoist-manufacturer","80":"product_tag-electric-hoist","81":"product_tag-electric-hoist-drum","82":"product_tag-electric-hoist-hook","83":"product_tag-electric-motor-grab","84":"product_tag-electrical-control-cabinet","85":"product_tag-electro-hydraulic-drum-brakes","86":"product_tag-electro-hydraulic-disc-brakes","87":"product_tag-electro-hydraulic-multi-flap-grab","88":"product_tag-electro-hydraulicclamshell-grab","89":"product_tag-electromagnetic-disk-brake","90":"product_tag-european-crane-wheel","91":"product_tag-european-style-hoist-double-beam-crane-end-beam","92":"product_tag-european-style-reel-set","93":"product_tag-european-style-single-beam-crane-end-carriage","94":"product_tag-european-style-suspended-single-beam-crane-end-beam","95":"product_tag-european-wire-rope-electric-hoisteuropean-double-beam-wire-rope-electric-hoist","96":"product_tag-f-series-three-in-one-reducer","97":"product_tag-fem-standard-crane-end-carriages","98":"product_tag-fem-standard-gear-motors","99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overload limiter -\u200cCrane Electrical Parts-Overload limiter<\/title>\n<meta name=\"description\" content=\"High-quality Crane Overload Limiter ensures safe crane operation by preventing overload. 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