Forage wagons are one of the most important parts in harvesting of grass silage from meadows. Differences between them are in their dimensions and in their method of implementation of the pickups (chain drive, pendulum drive, rotor drive). The purpose of this B. Sc. Thesis was to analyse the data of experiment and to find out the differences in fuel consumption and time spent between different working speeds of picking up. Then we have also calculated the time productivity, the surface productivity and the feed loading flow. We performed the experiment in the year 2022 on meadow between settlements Kokrica and Mlaka near Kranj in the middle of May at the first mowing. In the experiment we have used a rotor forage wagon. We have measured the amount of fuel used and time spent during picking up at different working speeds of picking up (4,5; 6 and 7,5 km/h) and did separate measurements during transport and unloading. We carried out two repetitions for measurements during picking up the feed for each working speed, and three repetitions for all other measurements. We have also weighed the mass of loaded feed. The settings of tractor and forage wagon were the same throughout the time of the experiment. The fuel and time consumption during transport and unloading were the same. Time consumption (l/h) increased with increasing the speed, meanwhile the fuel consumption (l/ha) decreased. The time productivity (h/ha) has decreased with increasing the speed of picking up, but the surface productivity (ha/h) decreased. Feed loading flow has increased with increasing the working picking up speed.
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