А grain harvester performance according to unloading time and modes

G. Tihanov

Department of Agricultural Engineering, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria

(Manuscript received 1 November 2018; accepted for publication 18 February 2019)

Abstract. The paper presents an analysis of the two ways of unloading the harvester grain hopper – unloading at standstill and unloading on the move. A passive experiment has been carried out during wheat harvest by measuring the loading time of a full harvester hopper into the transport vehicle. During its time measurement it has been found that for 237.4s the harvester is stopped and does not reap and does not perform actual output. The actual grain harvester output when unloading at standstill has been determined 17.15t/h (25.22 da/h) and the actually possible output if the harvester runs the same performance and unloads on the move it will reach an output of 20.91t/h (30.74 da/h), i.e. its output will increase by 19%. It has been found out that crop harvesting times can be shortened if the method unloading on the move is used, by about one day in harvesting the crop, respectively.