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) is provided, in that the respective grain discharge regions (54) in each case a seed inlet element (27), and it subsequently a common seed metering line (28) for receiving and transporting separated grains (44) from at least one and / or of the two metering devices (24; 26) to a, by means of grooves tools produced, seed trench is associated, wherein the seed metering line (28) the at least two seed inlet elements (27) being singled, and at least one grain delivery region (54) and / or seed inlet element (27) are acted upon by an excess pressure being an air stream by means of this excess pressure in at least one seed inlet element (27) and / or of the seed metering line (28) is generated, as a result of which the grains are subjected to an active acceleration.