摘要:
A transverse fan assembly comprising a cut-off construction (11), including for use with agricultural combine harvesters, to permit the transverse fan assembly to be operated to provide increased air flow volume at a lower rotational fan speed, which cut-off construction (11) includes generally planar inner surfaces (306, 308) on first and second body portions (302, 304) that are positioned laterally to one another along the top of the output throat (79) of the air plenum (44) of the transverse fan assembly between the outer periphery of the fan (42) and a baffle construction (76) of the transverse fan (42), such that the inner surface of the first body portion (302) is disposed at a cut-off inclination angle α, dependent upon certain parameters of the fan (42), and the inner surfaces of the first and second body portions (302, 304) intersect with one another in such a way that an upper wall (77) for the output throat (79) is formed by the cut-off construction (11) and by the baffle construction (76) of the fan assembly, which upper wall (77) has a concavity formed therein and therealong near the outer periphery of the fan (42) that effects a shift of the steering vortex of the fan (42) in such a way as to permit the fan (42) to operate with increased air flow volume at lower rotational fan speed.
摘要:
Separating device for an agricultural machine, comprising a sieve (1) for separating grains or seeds of a harvested crop from the other constituents of the crop, wherein the sieve (1) comprises a number of sieve elements (2) arranged approximately parallel to each other, which form a sieve surface and between which sieve openings are formed through which grains or seeds can pass, and wherein the sieve (1) has a supply side (3) intended for the supply of the harvested crop and a discharge side (4) intended for discharge of the other constituents of the crop, and wherein said sieve elements (2) are rod-like elements which extend in the direction of the discharge side (4).
摘要:
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.
摘要:
A cleaning assembly for a harvester has a fan assembly with a fan and a first fan outlet and a second fan outlet, a first sieve assembly with at least one reciprocable sieve, an upstream end of the first sieve assembly near the first fan outlet such that air from the first fan outlet flows along the first sieve assembly and a direction of crop flow; and a second sieve assembly has at least one reciprocable sieve, an upstream stream end of the second sieve assembly near the second fan outlet such that the air from the second fan outlet flows along the second sieve assembly and the direction of crop flow, the second sieve assembly has a clean grain auger for receiving cleaned grain, and the first sieve assembly has a further clean grain auger arranged for receiving cleaned grain.
摘要:
The present invention is related to a combine harvester provided with a threshing means (1), a preparation means and a cleaning arrangement. The preparation means comprises multiple preparation stages, each of said stages being configured to transport said mixture over a given distance between a front edge and a rear edge of the stage, with an air gap (7) being present between each pair of consecutive stages. The preparation means further comprises a blower means (15) that is separate from the main blower (10), said blower means being configured to direct an air stream or air blasts towards at least one of said air gaps (7), to thereby blow at least a portion of said mixture towards the rear of the combine harvester. The preparation means comprises a plate (5) provided with fins (6) mounted transversally with respect to the longitudinal direction of the harvester, each fin (6) representing one of said preparation stages, the plate (5) further comprising one or more openings (8) between at least one pair of consecutive fins, said opening(s) being suitable for allowing the passage of an air stream produced by the separate blower means (15), and directed towards the gap (7) between the pair of consecutive fins (6).
摘要:
Die vorliegende Erfindung betrifft eine Radialmaschine (28), mit einem Gehäuse (29), in welchem ein Laufrad (30) auf einer Antriebswelle (27) angeordnet ist, welche von einer hohlzylindrischen Nabe (31) abschnittsweise umgeben ist, auf welcher in Umfangsrichtung verteilt sich achsparallel zu der Antriebswelle (27) erstreckende Läuferschaufeln (32) angeordnet sind, welche durch sich radial nach außen erstreckende Wandsegmente (33a, 33b), die in Umfangsrichtung des Laufrades (30) zwischen den Läuferschaufeln (32) stehend angeordnet sind, miteinander verbunden sind, wobei dass zueinander benachbarte, durch eine Läuferschaufel (32) getrennte Wandsegmente (33a, 33b) eine in tangentialer Richtung des Laufrades (30) divergierende Anordnung aufweisen.