Portable log winch

U ovom završnom radu konstruirano je prijenosno vitlo za drva s pripadajućim zahvatnim sredstvom. Pregledom patenata i postojećih proizvoda na tržištu dobio se uvid u gotove proizvode od kojih su se dobile ideje za kreiranje koncepata. Kreirana je funkcijska struktura vitla i morfološka matrica s parcijalnim rješenjima. Odabirom pojedinih parcijalnih rješenja, definiran je oblik vitla. Nakon toga generirana su četiri koncepta zahvatnog sredstva od kojih je najbolji izabran za konstrukcijsku razradu. Ocjenjivanje koncepata provodilo se odabirom nekoliko bitnih faktora i dodjelom težinskih faktora, pri čemu je koncept s najvećom sumom ocjena izabran kao najbolji. Prema odabranom konceptu izrađen je 3D model na temelju kojeg se proračunom provjeravalo ostvaruju li odabrane dimenzije poluge dovoljnu silu pritezanja. Provedena je i FEM analiza kako bi se potvrdila točnost nekih rezultata. Na kraju, izrađena je tehnička dokumentacija vitla i zahvatnog sredstva.In this bachelor thesis, a portable winch for wood and gripping device was designed. An overview of patents and existing products on the market provided an insight from which ideas for further development were obtained. The functional structure of winch and morphological matrix with partial solutions were created. By choosing partial solutions for each function, the shape of winch was obtained. After that, four concepts for gripping device were created, of which the best one was chosen for a starting point. Evaluation of concepts was carried out by selecting several important factors and weighting factors. The concept with the highest sum was chosen as the best one. From a selected concept of gripping device, a 3D model was created, based on which the calculation was performed to check if the selected dimensions of the lever achieve enough traction force. FEM analysis was performed to confirm the accuracy of the results. In the end, technical drawings of the winch and gripping device were created