Separating device for a combine harvester

A separating device for a combine harvester that operates according to the principle of axial flow, the separating device comprising:

• a housing having a separating grate arrangement and a cover arrangement that together jointly form a hollow cylinder;
• and
• a separating rotor arranged in the hollow cylinder of the housing in a rotatably supported manner such that an intermediate space (Z1) is defined between the housing and the separating rotor for conveying crop circumferentially and along a longitudinal axis (LA) of the separating rotor;
• a plurality crop-stream engagement elements disposed lengthwise on an inner surface of the cover arrangement facing the separating rotor, one behind the other along the longitudinal axis (LA) of the separating rotor;
• wherein each crop stream engagement element engages radially, in a ramp-type manner, around a circumference of the separating rotor, into a crop stream that circulates in the intermediate space (Z1) during the circumferential conveyance of the crop stream;
• and
• a plurality of drive units connected respectively to each of the crop stream engagement elements drive an adjustment depth thereof into the intermediate space (Z1);
• wherein each of the drive units is activated from outside the housing in order to drive each respective adjustment.