SCREENING BELT UNIT FOR A HARVESTING MACHINE, AND ASSOCIATED FLAP UNIT

摘要

Disclosed is a screen belt unit for a harvesting machine or crop conveyor device, in particular for a root crop harvester or a root crop conveyor belt, and for separating trash from a mixture of crops and trash, the belt unit comprising a screen belt (2) having at least two endless carriers, preferably designed as carrier belts or chains (3), with screening bars provided therebetween in a direction running transversely to the conveying direction, said bars forming a plurality of screening bar units (11) which each comprise, in particular, at least two screening bars (4, 6). At least some of the screening bars (3) are fixed in position relative to the endless carriers, the screen belt unit (1) has a positioning means (13), at least some portions of which are located along the screen belt (2) and act on the movable screening bars (6), and which is used to define and in particular variably set, in the screening zone S, viewed in the screening direction, a distance A in the conveying direction F of successive screening bars. Also disclosed is an associated shutter unit.