A combine and combine conversion for collecting agricultural plants in a manner that separates various parts of the plants for collection or disposal. A combine is provided with an improved system for collecting and cleaning seed of an agricultural material such as cannabis while collecting lightweight chaff, such as trichomes, and returning stalks back to the agricultural field. The system provides for rapid conversion of a combine to seed and chaff collection and back again.

A combine harvester includes a housing having a rear hood and defining an interior, a blower for generating an air stream in a substantially rearward direction, and a cleaning system separating residue from a crop material such that the residue is transported via the air stream rearwardly to be discharged from the housing. A chopper rotor assembly is disposed within the interior below the rear hood and includes a chopper rotor having a plurality of blades for chopping the residue as it is received via the air stream. A chopper housing is disposed within the interior and defines an inlet of the chopper rotor for receiving the residue and an outlet spaced rearward from the chopper rotor for discharge of the chopped residue from the interior of the housing. An air gap through which the air stream may exit the interior is defined between the rear hood and chopper rotor.

A combine harvester for harvesting crop including a header, to cut crop, and a feeder house having an inlet, connected to the header, and an outlet, wherein the feeder house defines an interior and an exterior located outside the feeder house. The combine harvester includes one or more sensor assemblies connected to the feeder house, wherein each of the sensor assemblies provides a relative humidity value or both of a relative humidity value and a temperature value. A controller is operatively connected to the plurality of sensor assemblies, wherein the controller receives the relative humidity value or temperature value from each of the plurality of sensor assemblies. In response to the received relative humidity value or temperature value, the controller identifies a recommended setting for one or more harvester devices, parts, or components, to avoid grain loss and grain breakage resulting from crop moisture conditions.

A combine harvester having a cleaning shoe includes a housing, a chaffer having a frame assembly and a plurality of first louvers rotatably mounted to the frame assembly, and a blower comprising a plurality of second louvers. The first louvers are configured to rotate about lateral axes thereof, the lateral axes perpendicular to a longitudinal axis of the combine harvester. The second louvers are configured to change a lateral direction of air flow from the blower to the chaffer. Another combine harvester has a plurality of second louvers below first louvers of a chaffer. Each of the second louvers are configured to rotate about an axis perpendicular to the lateral axes of the first louvers of the chaffer. A method of operating a combine includes rotating at least one second louver to change a direction of the air flow in the cleaning shoe before the air flow reaches the chaffer.

Included is a combine having a feeder housing for receiving harvested crop, a separating system for threshing the harvested crop to separate grain from residue, a crop cleaning system including a cleaning fan powered by a fan drive to propel the residue into a residue system of the combine, at least one sensor for detecting an operational parameter of the fan drive, and a controller coupled to the at least one sensor. The controller is configured to determine a load on the fan drive from the detected operational parameter, compare the determined load to a load threshold, and control a speed of the cleaning fan based on the comparison.

A head assembly having ancillary fan assemblies can be operationally mounted to the outlet of a conventional harvester extractor. The ancillary fan assemblies can generally direct suspended trash materials in a substantially upward and laterally outboard direction toward both lateral sides of a harvester. A duct assembly having an inlet and an outlet generally extends from each ancillary fan assembly to a position generally above a track of a harvester. Trash material expelled by a harvester extractor enters the head assembly and is directed by the ancillary fan assemblies into each of the duct assemblies, through said duct assemblies, and onto the upper surfaces of the tracks of the harvester. The trash material is then conveyed by the tracks toward the front or forward portion of the harvester, where it falls off of the tracks generally in the path of the harvester. As the harvester continues moving forward, the harvester runs over the deposited organic trash material, plowing the organic trash material into the underlying terrain.

A combine harvester includes a housing, a separating system mounted within the housing for separating a seed material from a straw material, a cleaning system including a cleaning fan configured to produce a motive flow of air, a straw chopper operable to chop the straw material from the separating system into a chopped straw material, a spreading system positioned downstream of the straw chopper and configured to disperse the chopped straw material outside of the housing of the combine harvester, and an air discharge channel located downstream of the straw chopper and above the spreading system and configured to discharge a portion of the motive flow of air produced by the cleaning fan.

A combine including: a grain tank that stores grains sorted by a sort unit that swings to sort grains fallen from a threshing cylinder unit; a yield measuring device that measures the amount of grain put in the grain tank; a unit yield calculation unit that calculates a unit yield per unit plot in a cultivated field; an opening degree adjustment unit that adjusts the opening degree of a chaff sheave of the sort unit in accordance with a threshing state of the threshing apparatus; a mode setting unit that sets a yield accuracy priority mode in which priority is given to accuracy of the unit yield calculation performed by the unit yield calculation unit; and a yield accuracy maintenance unit that in response to the mode setting unit setting the yield accuracy priority mode, forcibly fixes the opening degree of the chaff sheave at a specific opening degree.

A cleaning system of a combine harvester includes a fan, a first valve member positioned within a first duct of the fan for throttling the flow of air through the first duct, a second valve member positioned within the second duct of the fan for throttling the flow of air through the second duct, a first actuator for adjusting a position of the first valve member, a second actuator for adjusting a position of the second valve member, first and second sensors for sensing air pressure at first and second sieves, and a controller. The controller is configured to receive the sensed air pressures from the sensors, compare the sensed air pressures with either each other or threshold values, and transmit instructions to one or both of the actuators to adjust the positions of one or both of the valve members.

A sugarcane harvester for harvesting sugarcane including a cutter configured to cut sugarcane into a sugarcane mat. An extractor is operatively connected to the cutter, and includes a fan housing having an inlet configured to receive the sugarcane mat and an outlet configured to discharge crop debris. A fan is located in the fan housing to move the sugarcane mat through the fan housing and includes a motor, blades rotatably coupled to the motor, and a blade angle of incidence mechanism operatively connected to the blades, wherein the blade angle of incidence mechanism adjusts the angle of incidence of the blades with respect to the motor. Sensors identify an air flow through the fan housing or a load placed on the motor during movement of the sugarcane mat through the fan housing. The angle of incidence of the blades is adjusted based on one or both of the air flow through the fan housing or the load placed on the motor.