Study on the Duration of Operations Performed by Transport Vehicles During Unloading of the Grain Harvester Hopper

Abstract

Unloading time of the harvester hopper at standstill depends also on the duration of the operations performed by the transport vehicle as time from the commencement of the harvester signalling to the start of the transport vehicle and the time from the start of the transport vehicle till its arrival under the unloading screw of the grain harvester. The time measuring of the operations established that the average time of commencement of the harvester signalling until the start of the transport vehicle was 215.5 s, and the time for moving of the transport vehicle to the grain harvester was 222 s. It was found that in 49% of the duration of the operations the drivers of the transport vehicles wait before going to the grain harvester (from the total of 437.5 s). This is due to the incorrect setting of the time of commencement of the first level signalling, which prevents drivers from starting and respectively arriving at the exact moment at the harvesters. It has also been found that the unloading of the harvester grain hopper takes place immediately after the arrival of the transport vehicles at it and therefore a non-filled hopper is unloaded. As a result, about 1 m³ of the harvester hopper is not used and also the number of its stops for unloading increase by about 11%, practically reducing its productivity. Keywords: grain harvester, unloading the grain harvester hopper, productivity, signaling about the grain level in the hopper, joint work of harvester and transport vehicle. ARTTEApplied Researches in Technics, Technologies and Education

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