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Cilj ovog rada bio je napraviti izvlačivi člankasti dohvatnik koji može, teret od najviše 0,5 t, podići na visinu od 5 m i pomaknuti u daljinu za 3 m. Potrebni kut zakreta je 270°, brzina podizanja je 10 m/min^(-1), a brzina zakretanja 2 min^(-1). Također bio je zahtjev za spajanje s tlom preko sidrenih vijaka. U radu napravljen je prvo uvod, zatim analiza tržišta i patenata. Nakon toga napravljena su tri konceptualna rješenja koja su ocijenjena te je odabrano jedno s kojim se išlo dalje. Paralelno s modeliranjem CAD modela rađen je proračun mehanizma za dizanje, promjenu dohvata i rotacije te nosive konstrukcije. Na kraju prikazane su slike modela zajedno s opisom rada i napravljena je tehnička dokumentacija glavnog sklopa, par podsklopova i crtež zavarene konstrukcije okvira. The goal of this work was to make a retractable articulated handle that can lift a load of up to 0.5 t to a height of 5 m and move it to a distance of 3 m. The required angle of rotation is 270°, the lifting speed is 10 m/min^(-1), and the turning speed is 2 min^(-1). There was also a requirement to connect to the ground via anchor bolts. In the paper, an introduction was made, followed by an analysis of the market and patents. After that, three conceptual solutions were made, which were evaluated, and one was chosen to proceed with. In parallel with the modeling of the CAD model, the calculation of the mechanism for lifting, changing reach and rotation, and the load-bearing structure was made. At the end, pictures of the model are shown together with a description of the work, and the technical documentation of the main assembly, a couple of sub-assemblies and a drawing of the welded frame structure is made. |
