Abstract: An exemplary sieve mechanism is configured for separating grain from chaff. The sieve mechanism generally includes a frame and a louvered region including a plurality of louvers mounted to the frame. The sieve mechanism further includes and an unlouvered region lacking louvers such that a gap is defined adjacent the louvered region.

Abstract: A grain harvesting vehicle is configured to harvest a grain. A chaffer is configured to separate grain from material other than grain (MOG). A grate is positioned rearward of the chaffer. The grate includes a grate panel having an upper surface and a lower surface and an aperture in the grate panel extending between the upper surface and the lower surface. The aperture has a first end nearer the chaffer and a second end opposite the first end. The grate further includes a ramp portion extending above the grate panel from adjacent the first end of the aperture toward the second end of the aperture. A grain sensor has a sensing location positioned at a height below the grate.

Abstract: A combine harvester may include a chaffer to separate residue from grain in crop material, a fan to direct air through and across the chaffer to carry the residue from the harvester, a sensor to output signals indicating a characteristic of the crop material upstream of the chaffer and a controller to adjust a speed of the fan based on signals from the sensor.

Abstract: A grain harvesting vehicle is configured to harvest a grain. A chaffer is configured to separate grain from material other than grain (MOG). A grate is positioned rearward of the chaffer. The grate includes a grate panel having an upper surface and a lower surface and an aperture in the grate panel extending between the upper surface and the lower surface. The aperture has a first end nearer the chaffer and a second end opposite the first end. The grate further includes a ramp portion extending above the grate panel from adjacent the first end of the aperture toward the second end of the aperture. A grain sensor has a sensing location positioned at a height below the grate.

Abstract: A combine harvester may include a chaffer to separate residue from grain in crop material, a fan to direct air through and across the chaffer to carry the residue from the harvester, a sensor to output signals indicating a characteristic of the crop material upstream of the chaffer and a controller to adjust a speed of the fan based on signals from the sensor.

Abstract: A cleaning shoe for an agricultural machine includes a chaffer supported for movement relative to a chassis, a sieve positioned below the chaffer and supported for movement relative to the chassis. The cleaning shoe also includes a first link, a second link, and a drive shaft. The first link includes a first end and a second end coupled to the chaffer. The second link includes a first end and a second end coupled to the sieve. The drive shaft rotates about a shaft axis and includes a first cam and a second cam. The first cam is coupled to the first end of the first link, and the second cam is coupled to the first end of the second link. Rotation of the drive shaft drives the first link to reciprocate the chaffer and drives the second link to reciprocate the sieve. The second cam is angularly offset relative to the first cam by a phase angle less than 180 degrees about the shaft axis.

Abstract: A cleaning shoe for an agricultural machine includes a chaffer supported for movement relative to a chassis, a sieve positioned below the chaffer and supported for movement relative to the chassis. The cleaning shoe also includes a first link, a second link, and a drive shaft. The first link includes a first end and a second end coupled to the chaffer. The second link includes a first end and a second end coupled to the sieve. The drive shaft rotates about a shaft axis and includes a first cam and a second cam. The first cam is coupled to the first end of the first link, and the second cam is coupled to the first end of the second link. Rotation of the drive shaft drives the first link to reciprocate the chaffer and drives the second link to reciprocate the sieve. The second cam is angularly offset relative to the first cam by a phase angle less than 180 degrees about the shaft axis.

Abstract: A hanger mount (206, 208, 210, 212) is provided for a reciprocating sieve assembly (106, 108) having a left side longitudinal member (300, 308), a right side longitudinal member (302, 310), a forward transverse member (304, 312), and a rearward transverse member (306, 314), wherein the hanger mount is a unitary body that has and defines a hanger connection (1000, 1100, 1200, 1300) that is configured to be coupled to a reciprocating hanger (110, 112); a first mounting surface (1006, 1010, 1106, 1110, 1206, 1210, 1306, 1310) that is configured to be fixed to one of the longitudinal members (300, 308, 302, 310); and a second mounting surface (1025, 1125, 1225, 1325) that is configured to be fixed to one of the transverse members (304, 312, 306, 314).

Abstract: A frame for reciprocating sieve assembly comprises a first side member (300, 308) that is elongate and extends longitudinally; a second side member (302, 310) that is elongate and extends longitudinally; a third side member (304, 312) that is elongate and extends transversely; a fourth side member (306, 314) that is elongate and extends transversely; a first hanger mount (206L, 210L) coupled to and extending between the first side member and the third side member; a second hanger mount (208L, 212L) coupled to and extending between the first side member and the fourth side member; a third hanger mount (206R, 210R) coupled to and extending between the second side member and the third side member; and a fourth hanger mount (208R, 212R) coupled to and extending between the second side member and the fourth side member; wherein the first side member, the second side member, the third side member, and the fourth side member are comprised essentially of an aluminum alloy; and wherein the first hanger mount, the seco

Abstract: A sieve frame (118, 122) for an agricultural harvester comprises two elongate members (300, 302, 308, 310) that are extruded and extend generally horizontally and in the direction of travel of the agricultural harvester. The sieve frame further comprises two additional extruded elongate members (304, 306, 312, 314) that are fixed transversely to the two elongate members. In one arrangement, the ends of the members are fixed together by hanger mounts.

Abstract: A frame for reciprocating sieve assembly comprises a first side member (300, 308) that is elongate and extends longitudinally; a second side member (302, 310) that is elongate and extends longitudinally; a third side member (304, 312) that is elongate and extends transversely; a fourth side member (306, 314) that is elongate and extends transversely; a first hanger mount (206L, 210L) coupled to and extending between the first side member and the third side member; a second hanger mount (208L, 212L) coupled to and extending between the first side member and the fourth side member; a third hanger mount (206R, 210R) coupled to and extending between the second side member and the third side member; and a fourth hanger mount (208R, 212R) coupled to and extending between the second side member and the fourth side member; wherein the first side member, the second side member, the third side member, and the fourth side member are comprised essentially of an aluminum alloy; and wherein the first hanger mount, the seco

Abstract: A sieve frame (118, 122) comprises two elongate members (300, 302, 308, 310) that are extruded.

Abstract: A hanger mount (206, 208, 210, 212) is provided for a reciprocating sieve assembly (106, 108) having a left side longitudinal member (300, 308), a right side longitudinal member (302, 310), a forward transverse member (304, 312), and a rearward transverse member (306, 314), wherein the hanger mount is a unitary body that has and defines a hanger connection (1000, 1100, 1200, 1300) that is configured to be coupled to a reciprocating hanger (110, 112); a first mounting surface (1006, 1010, 1106, 1110, 1206, 1210, 1306, 1310) that is configured to be fixed to one of the longitudinal members (300, 308, 302, 310); and a second mounting surface (1025, 1125, 1225, 1325) that is configured to be fixed to one of the transverse members (304, 312, 306, 314).