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Abstract(s)
Os ascensores para habitações são hoje em dia uma máquina imprescindível na nossa sociedade. Quando é projetada uma moradia, um edifício de apartamentos para habitações ou escritórios, é obrigatório por lei que este esteja equipado com acessos a pessoas com mobilidade condicionada em que usualmente é utilizado o ascensor para permitir o acesso. Esta indústria oferece também equipamentos para moradias ou requalificações de pequenos edifícios antigos que não foram equipados originalmente com ascensores. Quer por comodidade, ou por acesso a pessoas com mobilidade condicionada, este produto é cada vez mais procurado para instalação em habitações, neste caso os fabricantes oferecem um produto dedicado: o homelift. Neste trabalho foi realizado um estudo da estrutura autoportante de um elevador do tipo homelift da empresa GRUPNOR® . Este tipo de elevadores é normalmente instalado em habitações, com capacidade para 5 pessoas e até 4 pisos. O trabalho centrou-se na avaliação do comportamento da estrutura autoportante que suporta este tipo de equipamento. Esta estrutura é indispensável quando não existe uma caixa em alvenaria específica para a sua montagem. Não foram abordados os aspetos do sistema de elevação, central hidráulica nem o sistema de suspensão. A estrutura autoportante desenvolvida pela GRUPNOR® para os homelifts utiliza perfis enformados a frio pelas vantagens que confere na flexibilidade de diferentes combinações e por este ser o principal processo de fabrico utilizado pela empresa. Depois de executado o levantamento da estrutura existente, foram avaliados diferentes casos de carga recorrendo aos elementos finitos. Foi realizado um programa de ensaios para determinar a carga crítica à encurvadura dos perfis abertos utilizados como pilares. Concluiu-se pelo bom desempenho do produto com indicação de pontos sensíveis passiveis de melhoria.
The elevators for housing are nowadays an indispensable machine in our society. When a house is designed, an apartment building for dwellings or offices, it is mandatory by law that it is equipped with access to persons with impaired mobility, which the lift is usually used to allow access. This industry also offers equipment for housing or requalification of small old buildings that were not originally equipped with elevators. Whether for convenience or access to persons with impaired mobility, this product is increasingly sought after for installation in housing, in this case the manufacturers offer a dedicated product: the homelift. In this work was carried out a study of the self-supporting structure of a homelift of the company GRUPNOR® . This type of lifts is usually installed in dwellings, with capacity for 5 people and up to 4 floors. This work focused on the evaluation of the behavior of the self-supporting structure that supports this type of equipment. This structure is indispensable when there is no box in masonry specific for its assembly. The aspects of the lifting system, power station and suspension system were not addressed. The self-supporting structure developed by GRUPNOR® for the homelifts uses cold formed profiles for the advantages that it gives in the flexibility of different combinations and for this being the main manufacturing process used by the company. After performing the survey of the existing structure, different cases of load were evaluated using the finite elements. A test program was conducted to determine the critical load on the buckling of the open profiles used as pillars. It was concluded by the good performance of the product with indication of possible points of improvement.
The elevators for housing are nowadays an indispensable machine in our society. When a house is designed, an apartment building for dwellings or offices, it is mandatory by law that it is equipped with access to persons with impaired mobility, which the lift is usually used to allow access. This industry also offers equipment for housing or requalification of small old buildings that were not originally equipped with elevators. Whether for convenience or access to persons with impaired mobility, this product is increasingly sought after for installation in housing, in this case the manufacturers offer a dedicated product: the homelift. In this work was carried out a study of the self-supporting structure of a homelift of the company GRUPNOR® . This type of lifts is usually installed in dwellings, with capacity for 5 people and up to 4 floors. This work focused on the evaluation of the behavior of the self-supporting structure that supports this type of equipment. This structure is indispensable when there is no box in masonry specific for its assembly. The aspects of the lifting system, power station and suspension system were not addressed. The self-supporting structure developed by GRUPNOR® for the homelifts uses cold formed profiles for the advantages that it gives in the flexibility of different combinations and for this being the main manufacturing process used by the company. After performing the survey of the existing structure, different cases of load were evaluated using the finite elements. A test program was conducted to determine the critical load on the buckling of the open profiles used as pillars. It was concluded by the good performance of the product with indication of possible points of improvement.
Description
Keywords
Elevadores Estruturas Homelift Lifts Structures