Design of auxiliary outboard motor bracket

U ovom radu konstruirat će se nosač pomoćnog vanbrodskog motora. U obzir će se uzeti motori manjih snaga, jer se upravo oni najčešće primjenjuju kao pomoćni motori na jedrilicama i motornim brodicama. Kako su takvi motori samo povremeno u pogonu, glavna funkcija nosača je omogućavanje njihovog podizanja i spuštanja, ovisno o tome je li potrebno motor spustiti u vodu, ili njegov rad u nekom trenutku više nije potreban pa ga je potrebno podignuti izvan vode, ili se pak radi o transportu brodice po cestovnoj površini pa je itekako poželjno da je najniža točka motora što udaljenija od tla. S obzirom da se radi o motorima manjih snaga, radnje podizanja i spuštanja obavljat će se mehanički. konkretno, odabrat će se motor snage od oko 2,5 do 5 konjskih snaga (odnosno približno 1,85 do 3,7 kilovata), što odgovara masama od oko 15 do 30 kilograma. U prvom dijelu rada provest će se analiza postojećih nosača na tržištu, uz prethodnu kratku analizu i samih motora i odabir jednog od njih. Nakon toga, krenut će se s konstrukcijom nosača, gdje će se uzeti u obzir razne mogućnosti i odabrati najkorisnije od njih, uz optimizaciju raznih parametara kao što su troškovi, složenost konstrukcije, masa, čvrstoća i ostali. Nakon završene konstrukcije slijedi proračun čvrstoće, a na kraju je prikazana tehnička dokumentacija. CAD model i tehnička dokumentacija izrađeni su u programskom paketu SolidWorks 2017.This thesis shows the design of auxiliary outboard motor bracket. Smaller power engines will be considered, as they are most often used as auxiliary engines on sailboats and motorboats. Since such engines are only occasionally in operation, the main function of the carrier is to enable their lifting and lowering, depending on whether the engine needs to be lowered into the water or its operation at some point is no longer needd and needs to be liftd out of the water or it is about transporting the boat on the road so it is highly desirable that the lowest point of the engine is as far away from the ground. Since it is a smaller power engine, lifting and lowering operations will be performed mechanically. Specifically, a power engine of about 2.5 to 5 horsepower (or about 1.85 to 3.7 kilowatts) will be selected, corresponding to masses of about 15 to 30 kilograms. In the first part of the work, an analysis of existing carriers on the market will be carried out, with a brief analysis of the engines themselves and selection of one of them. After that, the design of the bracket will be carried out, where various options will be considered and most useful of them selected, wit optimization of various parameters such as cost, complexity, mass, strength and others. After the completion of construction follows the calculation of strength, and finally technical documentation is displayed. The CAD model and technical documentation are made in SolidWorks 2017