Dosing system of an agricultural machine

摘要

It is a dosing system (22) of a row unit (10) of an agricultural machine for the individual delivery of grains (46) such as seeds and / or fertilizer are obtained, which consists of two metering devices (24; 26), which operate according to the difference pressure principle, wherein by means of this at least two different terrains can be applied, in order as far as possible with simple means a rapid switching between the individual grain charges and to achieve an improved grain transport the invention provides two metering devices (24; 26) which is a common grain delivery region (54), which common grain delivery region (54) a seed metering line (28), to receive and transport the separated grains (44) of the at least two metering devices (24; 26) to a, by means of grooves tools produced, seed trench is assigned, and the grain delivery region (54) having an overpressure is applied by means of this excess pressure being a stream of air in the seed metering line (28) is generated, as a result of which the grains (44) are subjected to an active acceleration.