A threshing section for a combine harvester includes a rotor and a transition cone. The rotor has an axis of rotation, a downstream end, and an upstream end. The upstream end includes one or more blades for moving crop downstream in a direction of crop flow. The transition cone at least partially surrounds the upstream end of the rotor and the blades. An annular space is formed between a swept profile of the blades and an interior surface of the transition cone through which crop is introduced into the threshing section. A cross-sectional area of the annular space, which is measured in a radial direction, is substantially constant along at least a portion of a length of the swept profile.

A threshing section for a combine harvester includes a rotor and a transition cone. The rotor has an axis of rotation, a downstream end, and an upstream end. The upstream end includes one or more blades for moving crop downstream in a direction of crop flow. The transition cone at least partially surrounds the upstream end of the rotor and the blades. An annular space is formed between a swept profile of the blades and an interior surface of the transition cone through which crop is introduced into the threshing section. A cross-sectional area of the annular space, which is measured in a radial direction, is substantially constant along at least a portion of a length of the swept profile.

A grain processing assembly for a combine that comprises a feeder assembly, a threshing assembly having a rotor disposed within a housing, a hood. The feeder assembly comprises a lower conveyor and an upper conveyor. The position of the lower conveyor and the upper conveyor is such that upper conveyor assists the lower conveyor in directing crop material being transported on the lower conveyor towards a discharge end of the lower conveyor. The hood engages a belt of the second upper conveyor.

A grain processing assembly for a combine that comprises a feeder assembly, a threshing assembly having a rotor disposed within a housing, a hood. The feeder assembly comprises a lower conveyor and an upper conveyor. The position of the lower conveyor and the upper conveyor is such that upper conveyor assists the lower conveyor in directing crop material being transported on the lower conveyor towards a discharge end of the lower conveyor. The hood engages a belt of the second upper conveyor.

A transition cone for a threshing system of an agricultural harvesting machine has an inner surface with a tapering inner circumference between a wider upstream end and a narrower downstream end, and a plurality of vanes in the transition cone. Each vane extends between the upstream end and the downstream end and at least partly around the tapering inner circumference. Each vane includes an upstanding segment extending away from the inner surface, and a base segment extending from the upstanding segment along the inner surface on the downstream side of the upstanding segment. The base segment has a thicker proximal region adjacent the upstanding segment and a thinner distal edge opposite thereto.

A transition cone for a threshing system of an agricultural harvesting machine has an inner surface with a tapering inner circumference between a wider upstream end and a narrower downstream end, and a plurality of vanes in the transition cone. Each vane extends between the upstream end and the downstream end and at least partly around the tapering inner circumference. Each vane includes an upstanding segment extending away from the inner surface, and a base segment extending from the upstanding segment along the inner surface on the downstream side of the upstanding segment. The base segment has a thicker proximal region adjacent the upstanding segment and a thinner distal edge opposite thereto.

A combine harvester has at least one header for cutting plants to be harvested with the aid of the combine harvester, a feeder for conveying the cut plants in the direction of a threshing mechanism, and a threshing mechanism, with the aid of which fruits can be removed from the cut plants in such a way that the fruits are then present separately from plant residue of the plants. The feeder comprises a revolvingly driveable conveying unit and a conveyor channel within which the cut plants can be conveyed with the conveying unit. The feeder interacts with a measuring unit in the form of a sensor unit that contactlessly detects material feed height of plants conveyed with the aid of the feeder in the conveyor channel.

A combine harvester has at least one header for cutting plants to be harvested with the aid of the combine harvester, a feeder for conveying the cut plants in the direction of a threshing mechanism, and a threshing mechanism, with the aid of which fruits can be removed from the cut plants in such a way that the fruits are then present separately from plant residue of the plants. The feeder comprises a revolvingly driveable conveying unit and a conveyor channel within which the cut plants can be conveyed with the conveying unit. The feeder interacts with a measuring unit in the form of a sensor unit that contactlessly detects material feed height of plants conveyed with the aid of the feeder in the conveyor channel.

A combine feeder assembly having conveyors and slats pivotally connected to the conveyors to rotate about respective slat pivot axes. Each slat has a paddle that is movable between a first position in which the paddle extends outside the travel path of the conveyor by a first distance, and a second position in which the paddle does not extend outside the travel path or extends outside the travel path by a second distance that is less than the first distance. A cam surface moves the slats to the first slat position along a delivery path of the conveyors. A first housing wall extends over the delivery path and is spaced from the travel path by at least the first distance. A second housing wall extends over a return path. The second housing wall is spaced from the travel path by less than the first distance.

A combine feeder assembly having conveyors and slats pivotally connected to the conveyors to rotate about respective slat pivot axes. Each slat has a paddle that is movable between a first position in which the paddle extends outside the travel path of the conveyor by a first distance, and a second position in which the paddle does not extend outside the travel path or extends outside the travel path by a second distance that is less than the first distance. A cam surface moves the slats to the first slat position along a delivery path of the conveyors. A first housing wall extends over the delivery path and is spaced from the travel path by at least the first distance. A second housing wall extends over a return path. The second housing wall is spaced from the travel path by less than the first distance.