A combine harvester is provided with a conveyance system for transporting crop material discharged by overhead grain separating apparatus to a grain cleaning shoe. The conveyance system comprises a series of oscillating pans which move the grain in a generally longitudinal direction. A return pan conveys the collected material forwardly to a front discharge edge from where the material falls onto a stratification pan below. The stratification pan conveys the collected material rearwardly to a rear discharge edge from where the material falls into the grain cleaning shoe. At least one of the return pan and the stratification pan is non-rectangular and has a non-transverse discharge edge.

A monitoring system for a combine harvester. The monitoring system includes a sensor configured to provide a measurement wave to a flow of crop residue on the harvester and to receive a response wave from the flow of crop residue. The monitoring system further includes a processor having an input terminal for receiving a response signal of the sensor representative of the response wave. The processor is configured to determine a crop parameter associated with the density of the flow of crop based on the response signal of the sensor. The processor further has an output terminal for outputting a density signal representing the crop parameter.

A monitoring system for a combine harvester. The monitoring system includes a sensor configured to provide a measurement wave to a flow of crop residue on the harvester and to receive a response wave from the flow of crop residue. The monitoring system further includes a processor having an input terminal for receiving a response signal of the sensor representative of the response wave. The processor is configured to determine a crop parameter associated with the density of the flow of crop based on the response signal of the sensor. The processor further has an output terminal for outputting a density signal representing the crop parameter.

An unloading system for a harvester is described as including a crop delivery apparatus, an unloading structure and a belt. The crop delivery apparatus defines an outlet and is configured and positioned to propel a flow of crop material through the outlet such that a least a portion of the crop material is deposited onto the belt. The unloading structure is configured to receive the crop material from the crop delivery apparatus and has a structure including a conveyor tube portion extending along a longitudinal axis, the conveyor tube portion defining a passage therethrough having an open intake end. The belt extends from the intake end through the passage for transporting the crop material through the conveyor tube portion. A projection of the longitudinal axis of the conveyor tube portion of the unloading structure passes through an internal cross-sectional area defined by the outlet of the crop delivery apparatus.

An unloading system for a harvester is described as including a crop delivery apparatus, an unloading structure and a belt. The crop delivery apparatus defines an outlet and is configured and positioned to propel a flow of crop material through the outlet such that a least a portion of the crop material is deposited onto the belt. The unloading structure is configured to receive the crop material from the crop delivery apparatus and has a structure including a conveyor tube portion extending along a longitudinal axis, the conveyor tube portion defining a passage therethrough having an open intake end. The belt extends from the intake end through the passage for transporting the crop material through the conveyor tube portion. A projection of the longitudinal axis of the conveyor tube portion of the unloading structure passes through an internal cross-sectional area defined by the outlet of the crop delivery apparatus.

An unloading system for a harvester is described as including a crop delivery apparatus, an unloading structure, a belt, and a deflector. The crop delivery apparatus has an outlet through which a flow of crop material is expelled. The unloading structure receives the flow of crop material from the outlet of the crop delivery apparatus and includes a conveyor tube portion extending along a longitudinal axis and defining a passage therethrough with an open intake end. The belt extends into from the intake end through the passage for transporting the flow of crop material through the conveyor tube portion. The deflector extends within the unloading structure from an upstream end to a downstream end such that at least a portion of the flow of crop material received from the crop delivery apparatus contacts the deflector and is directed towards at least a portion of the belt.

An unloading system for a harvester is described as including a crop delivery apparatus, an unloading structure, a belt, and a deflector. The crop delivery apparatus has an outlet through which a flow of crop material is expelled. The unloading structure receives the flow of crop material from the outlet of the crop delivery apparatus and includes a conveyor tube portion extending along a longitudinal axis and defining a passage therethrough with an open intake end. The belt extends into from the intake end through the passage for transporting the flow of crop material through the conveyor tube portion. The deflector extends within the unloading structure from an upstream end to a downstream end such that at least a portion of the flow of crop material received from the crop delivery apparatus contacts the deflector and is directed towards at least a portion of the belt.

A sieve assembly for use within an agricultural harvester may generally include a sieve, a crop material sheet, and at least one support element. The sieve extends along a length defined between a first sieve end and a second sieve end and processes a flow of harvested crop material. The sieve also defines a plurality of openings through which cleaned crop material of the flow of crop material is directed. The crop material sheet extends along a length defined between a first sheet end and a second sheet end and receives the cleaned crop material directed through the sieve's openings. The crop material sheet then directs the flow of cleaned crop material towards a separate component of the crop processing system. In addition, the support element(s) is directly coupled between the sieve and the crop material sheet and structurally connects the sieve to the crop material sheet.

A return pan for an agricultural harvester has an inclined upper surface portion, disposed to receive grain from a threshing or separating mechanism and laterally convey grain under the force of gravity to an inlet of a grain flow sensor.

A return pan for an agricultural harvester has an inclined upper surface portion, disposed to receive grain from a threshing or separating mechanism and laterally convey grain under the force of gravity to an inlet of a grain flow sensor.