The thesis focuses on the construction of a hay crane. The hay crane contributes to the modernisation and improves efficiency of the hay transport process before, during and after the hay is drying in the hay barn and helps to increase productivity in an agriculturally orientated economy. Its drive system, size and load capacity differentiate it from existing cranes on the market. The thesis presents the concept of the construction, operating conditions and construction evaluation according to the FEM 1.001 rules for design of cranes and hoisting appliances. It also contains the structural analysis of the concept, construction optimisation and structural analysis of the final version after optimisation.