SU1367911A1 - Grain combine harvester - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery. The purpose of the invention is to reduce the loss of waste from the extension of the upper sieve. The harvester contains a threshing and separating device, a straw walker, an upper sieve with an extension cord 2. Behind the transverse-oriented louvers 6 of the extender 2, longitudinally-oriented louvers 8 are installed. . Unmilked spikelets are separated on the upper sieve and extension 2. Then they enter the device to return to the re-threshing pile. When the combine is operating in areas with high humidity, the blinds 8 are turned to form a grid. This ensures the release of under-molded spikelets. When the harvester is operating on a dry grain baking, the blinds 8 are turned to form a mesh surface. This prevents the purification system from circulating the separated product. 8 il. to (L

Description

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The invention relates to agricultural machinery and is aimed at improving the process of separation of grain.

The purpose of the invention is to reduce the loss of waste from the extension of the upper sieve,

FIG. 1 shows a grain-harvest combine, a general view; in FIG. 2, an extension of the upper sieve, view; FIG. 3 shows the position of the longitudinally oriented louvers with an increased content of undermilted ears; FIG. 4 is a section A-A in FIG. 3; Fig. 5 shows the extension of the upper sieve, the position of the longitudinally oriented louvers with a higher content of small straws; FIG. 6 is a section BB in FIG. 5; figure 7 is a view In fig 3; FIG. 8 is a view of T in FIG.

The combine harvester contains a threshing and separating device, a straw walker, an upper sieve 1, an extension of the sieve body 2 of the upper sieve, a hinged stacker 3 of the non-grain part of the crop, a device 4 for returning to the second thresh of

The extension 2 contains placed on the frame 5 of the extension cross-oriented louvers 6 and additionally installed section 7 of the pivot longitudinally oriented louvers 8, the working edges of which are made with one-sided oriented teeth m

An adjusting mechanism for opening longitudinally oriented louvers 8 comprises an adjusting bar 10 placed inside the rear bar 9 of the frame 5 of the extension, in the latter there are a series of adjusting holes 1 1 and elongated grooves 12 with which the crankshafts 8, and the spring 13 rigidly attached by a collar 14 to the rear bar 9 of the extension frame, and the other end enters one of the adjusting holes 11 of the plank 10, fixing the opening angle of the louver 8,

The combine works as follows,.

When the combine harvester moves across the field, the grain mass enters the threshing-separating device, is threshed and separated through the deck and the straw walker with the grain pile goes to the upper

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the sieve 1, equipped with an extension 2, which is used for the furthest separation of the heap and its transportation to the hinged stacker 3, the undersized ears isolated on sieve 1 and the extension 2 are fed to the device 4, which returns them to the next thresh.

When the combine is operating in areas with high humidity, as well as when harvesting difficult-to-threshing wheat varieties, when in the grain heap allocated by the threshing-separating device, the number of under-threshed spikelets is increased, the adjusting bar 10 is moved so that left adjustment hole 11 of this slat. In this case, the crankshafts of the longitudinally oriented louvers 8, interacting with the grooves 12 of the bar 10, are deployed by it to form longitudinally oriented louvres of the grille. The longitudinally oriented under-treated spikelets are captured by the grille and sent to the second thresh by the device 4.

When the combine is working on a dry bakery, when the presence of chaff and small straw impurities increases in the heap coming in for cleaning, the bar 10 is moved so that the fixing end of the spring 13 enters the rightmost hole

II of this strap. At the same time, the crankshafts of the louver 8, which interact with the grooves of the strip 10, are deployed by it to form a longitudinally oriented louver of the mesh surface, ensuring that the cleaning-by-turn system does not circulate the product being separated,

In addition, a number of intermediate positions of the strap 10 provides for the sieve extender to be adjusted to catch spikelets of a certain size depending on the variety of the crop being harvested.

Claims (1)

Claims of the invention: A combine harvester comprising an upper sieve extension with swiveling cross-oriented louvers, a device for returning to the repeated threshing of the pile, a hinged stacker, characterized in that, in order to reduce the loss of losses from the upper extension longitudinally oriented pivotal blinds, the working edges of which bathroom teeth and are installed behind the transverse-oriented blinds. FIG. (riz. 5 d. 6 9 10 9 L7 gz Figv View in Fg / g 7 Type G