The disclosure provided herein is directed to an agricultural products cleaning machine for cleaning agricultural products, such as grains in general, whereby the agricultural products are thrown against a sieve system with curved sieves in the shape of a volute by a grain transport and elevation system or bucket elevator. When thrown, the agricultural products move along as a spiral curtain which collides with the curved surface of the sieve, promoting the separation of agricultural products from impurities. The sieve allows adjustment of the mesh, so that a simple adjustment allows the separation of diverse agricultural products without having to change the sieve to a bigger or smaller mesh

Receivers are arranged to detect a corresponding observed phase shift, observed attenuation or other observed signal parameters for its respective microphone. An electronic data processor is adapted to estimate a distribution or quantity of material on the sieve based on the observed phase shift, the observed attenuation or the other observed signal parameters relative to a reference phase shift, a reference attenuation or other reference signal parameter. The operator can be alerted via a user interface if the material on the sieve is unevenly distributed or matches a preestablished distribution profile, or the sieve can be adjusted by an actuator to promote a generally uniform distribution.

A cleaning shoe for a combine harvester, including a frame, a sieve and at least one reciprocating mechanism attached to the sieve for reciprocating the sieve in a forwards and backwards motion and the reciprocating mechanism includes an eccentric drive housing, pivotably mounted to the frame, and arranged to rotate around a pivot point thus changing its angle to the horizontal, and an actuator connected to the eccentric drive housing, which varies the angle to the horizontal of the reciprocating motion of the sieve by varying the angle to the horizontal of the eccentric drive housing.

Adjustable screen comprising scales (1) consisting of teeth (1.1) interspersed with bases (1.2), an inclined tab (1.3) on the rear portion and a channel (1.4) between the inclined tab (1.3) and teeth (1.1) for the introduction of the shafts (3.1) for moving the scales, the teeth (1.1) being fluted and the bases (1.2) being flat. It also comprises partitions (2.1) fastened at the ends (2.2) between the sides (2.3) of the structure of the screen (2) and a mechanism for adjusting the scales (3) made up of shafts (3.1) rotating in orifices (2.6) of the sides (2.3) of the structure of the screen (2). After the orifices (2.6), the shafts (3.1) have an S-shaped bend (3.2) for introduction into the orifices (3.4) of the ruler (3.3) in the outer face of the side of the screen (2.3). The end (2.2) has an orifice (2.7) on which a spindle (3.5) with a rotating lever (3.6) is mounted. An elastic part (3.8) flanked by protective elements (3.7) is mounted on the spindle (3.5).

A sieve for use in an agricultural harvester includes a framework with a pair of opposed side members, and a first cross member extending between the side members at one end of the side members. A plurality of louvres extend between the pair of opposed side members. A pair of adjustment laths are respectively associated with and movable generally parallel to the side members, with each of the adjustment laths also being connected with the plurality of louvres. The sieve has an adjustment arrangement positioned below the plurality of louvres. The adjustment arrangement includes an actuator and a frame. One end of the actuator is connected to the first cross member and the other end of the actuator is connected to the frame. The frame has a pair of outboard ends with each of the outboard ends being connected to a respective one of the adjustment laths.

A sieve for use in an agricultural harvester includes first and second adjustment laths arranged longitudinally adjacent to each other. The first and second adjustment laths are movable in fore and aft directions relative to an air flow direction (Y) through the sieve. The first adjustment lath is connected with a first set of louvres and the second adjustment lath is connected with a second set of louvres. An adjustment arrangement for adjusting an offset spacing (X) between first and second sets of louvres includes a rotatable elongate element with a longitudinally facing stepped shoulder and a stop surface. The elongate element is connected with each of the first and second adjustment laths. The stepped shoulder includes a plurality of stepped surfaces which are selectively engagable with the at least one stop surface. The stepped surfaces respectively define incremental offset spacings (X) between the first and second set of louvres.

A mount for an electrical connector includes a generally cylindrical body, and a concave protrusion and a connector receptacle each extending from an outer surface of the body. The connector receptacle is structured to receive pair of mated electrical connectors, and the body further defines a first hole and a second hole through which fasteners may secure each electrical connector within the connector receptacle. An actuator assembly includes an actuator having at least one flexible wire electrically coupled to a first electrical connector, a mount, a mount fastener, and a connector fastener. The connector fastener is disposed within the first hole and secured around the connector receptacle and the first electrical connector. A method includes attaching a mount fastener around a mount to secure the mount to the actuator and attaching a connector fastener through the first hole, around the connector receptacle, and around the first electrical connector.

A concave section for a harvester includes a concave body having an upstream side, a downstream side, a leading end and a trailing end. The concave body defines an arcuate crop engagement face facing radially inwardly. A plurality of crop passage openings are defined through the arcuate crop engagement face. A cover is configured to at least partially cover at least some of the crop passage openings. The cover is carried by the concave body and is movable thereon between at least two different positions to adjust a degree of openness of at least some of the crop passage openings.

A cleaning device includes a first frame plate, a shaking plate, a second frame plate, a sieve body, a driving mechanism, a throwing rod, and a crank and connecting rod mechanism. The shaking plate is mounted in the first frame plate, forms an angle of inclination with a horizontal plane, and is connected to a shaking device. The second frame plate is mounted below the first frame plate, and is connected to the first frame plate through a crank mechanism. The sieve body is mounted in the second frame plate. The driving mechanism is connected to the shaking device and the second frame plate, and configured for driving the shaking device to cause the shaking plate to shake and driving the second frame plate to cause the sieve body to perform a sieving motion. A harvester including the cleaning device is further provided.

A grain cleaning system for a combine harvester having a transmitter adapted to transmit a base signal at a known frequency and one or more spaced receivers for detecting signals of a different frequency as reflected from airborne grain and other materials within the duct of the grain cleaning system. An Electronic Control Unit modulates the base signal and the reflected signals to obtain Doppler signals or frequencies from which an average particle velocity is determined. The particle velocity is used as an input parameter for the generation of control signals for the adjustment of various working units of the combine harvester including, by way of example, the fan and sieves.