This paper deals with the development and construction of a rear loader for tractors with a separate hydraulic system driven by the tractor's output shaft. The aim was to design a functional solution intended for tractors ranging from 40 to 70 HP with a load capacity of 500 kg and a lifting height of 2700 mm with economic constraints and the need to design for manufacturing and assembly. Functional decomposition, partial solutions and concepts were made and the simplest and most economical concept was selected through the analysis of the concepts. The selected concept was improved and then the static, hydraulics and stability calculations were made for it. 3D model and technical documentation of loader were made in SolidWorks. Finally, the production process, assembly and economic analysis were described, according to which the developed loader is ahead of all the market options. The conclusion states that the goals have been exceeded and that the special innovation has been achieved in the form of the integration of its own hydraulic system and the reduction of the overall price compared to existing market solutions. Most of the limitations are due to the choice of the tractor itself, and additional limitations are related to the type of the tool attaching mechanism and the unknown behavior of the loader in real conditions. Further development should be based on the standardization of the tool attaching mechanism, modularity and the creation of prototypes and conducting testing.
Matija Hegedić
2025
Bachelor thesis
