| Abstract | Tema ovog diplomskog rada je konstrukcija rovokopača za iskop pravokutnih rovova. Rovokopač je stroj konstruiran za kopanje dugih i uskih iskopa u raznim vrstama tla, od zemlje pa sve do kamena, u ruralnim sredinama, ali i u urbanim centrima milijunskih gradova.
U radu je pružen sažet pregled povijesnog značaja rovova, ali i razvoj rovokopača kroz razvoj industrije. Također, provedena je analiza tržišta, kojom je pružen pregled postojećih konstrukcijskih rješenje strojeva slične namjene. Prikupljenim informacijama iz analize tržišta, konstruirana su tri koncepta koja su podvrgnuta ocjenjivanju u različitim kategorijama. Na temelju dobivenih ocjena, konstruiran je završni koncept, koji služi kao temelj za konstrukcijsku razradu rovokopača.
Prema zadatkom zadanim ulaznim parametrima, proveden je proračun konstrukcije rovokopača. Odnosno, pomoću zadane širine, dubine te brzine kopanja, izračunata je sila potrebna za kopanje rovova. Dobivenom potrebnom silom, odnosno momentom, odabrani su hidromotor i bager koji će pogoniti rovokopač.
Poznavajući sve potrebne parametre, proračunati su svi dijelovi konstrukcije, poput ležajeva, pera, vratila, osovina, zavara i vijaka. Koristeći FEM analizu provedena je analiza nosivosti bagerskog priključka.
3D model, FEM analiza i tehnička dokumentacija koja je priložena u završetku ovog diplomskog rada izrađeni su u programskom paketu SolidWorks. |
| Abstract (english) | Topic of this master's thesis is construction of a trencher for digging rectangular trenches. A trencher is a machine designed for digging long and narrow excavations in various types of soil, from earth to rock, in rural environments as well as in the urban centers of cities.
This thesis provides a brief overview of the historical significance of trenches, as well as the development of trenchers throughout the evolution of the industry. Additionally, a market analysis has been conducted, providing an overview of existing design solutions for machines of similar purposes. Based on the information gathered from the market analysis, three concepts were designed and evaluated in different categories. Based on the obtained ratings, a final concept was chosen, serving as the basis for the detailed design of the trencher.
According to the given input parameters, the design of the trencher was calculated. That is, using the specified width, depth, and digging speed, the force required for trenching was calculated. Based on the required torque, hydraulic motors and trenchers were selected to power the trencher.
With all necessary parameters known, all components of the construction were calculated, such as bearings, blades, shafts, axles, welds, and screws. Using FEM analysis, the load capacity of the trencher attachment was analyzed.
The 3D model, FEM analysis, and technical documentation provided at the end of this master's thesis were created using the SolidWorks software package. |
