RU2714761C2 - Threshing device - Google Patents

Abstract

FIELD: agriculture; machine building.

SUBSTANCE: invention relates to agricultural machine building and may be used for thrashing of crops. Threshing device comprises threshing drum 1 with pincers 2 and concave 3. Threshing drum 1 is combined with diametrical fan and is made with inner curvilinear blades 4 over the entire width of drum 1 in form of blades 4 of diametrical fan arranged along inner circumference of threshing drum 1.

EFFECT: threshing device allows to increase speed of air flow and threshing capacity ensuring increased efficiency of combine harvester.

1 cl, 1 dwg

Description

The invention relates to agricultural machinery, in particular, to devices for harvesting cereal crops and panicle crops.

A known design of the thresher of a combine harvester [Application for invention No. 2004124630/12, priority 12.08.2004, authors Ponomarev G.V. (RU), Kubyakov V.V. (RU) and others, publ. 02/10/2006, Bull. No. 4] consisting of a housing with a receiving beater sequentially fixed on its side panels, a threshing drum with a concave, three beater separators with separation elements below them, a straw walker and wind-screen cleaning. The separation elements are made in the form of two guide grids and a beater separator deck. The deck is made in the form of a thin-sheet curved surface with holes and consists of three cylindrical parts. The deck is installed under the second beater separator and partially under the first and third beater separators in the grooves of the side panels of the thresher body with the possibility of adjusting the gaps between the deck and the three beater separators. The main design flaws: the complexity of the manufacture of the thresher, the small suction air flow at the inlet of the thresher, which does not provide a steady supply and complete threshing of plants.

The closest known technical solution is the thresher of a combine harvester [Patent of the Russian Federation for invention No. 2340160, IPC: A01F12 / 18, “Thresher of a combine harvester", authors Kravchenko V.S. (RU), Kutseev V.V. (RU), Petunina I.A. (RU), publ. 12/10/2008, Bull. No. 34], taken as a prototype. The design of the thresher of a combine harvester includes a threshing drum, concave, kinematically connected with each other jackhammer and additional paddle beater and a straw walker. The concave comprises cross-bars installed at intervals. The top of the last concave strip along its entire length is made with cutouts in the form of a trapezoid, the larger base of which is facing the threshing drum. An additional paddle beater is installed under the bumper beater between the concave and the straw walker with the possibility of the blades of the additional beater entering the space between the blades of the bumper beater. The main disadvantage of the prototype: it does not provide a reliable capture and supply of mass to the threshing zone, as a result of which the degree of threshing and the throughput of the thresher are reduced.

The technical result of the proposed device is to improve the quality of work of the thresher of a combine harvester by increasing the speed of the air flow, ensuring the reliability of capture and supply of mass to the threshing area, as well as increasing the degree of threshing and throughput of the thresher of a combine harvester.

The threshing device, including the threshing drum and concave, is characterized in that the threshing drum is combined with a diametrical fan and is made with internal curved blades over the entire width of the drum in the form of diametrical fan blades located around the inner circumference of the threshing drum.

The presence of signs distinctive from the prototype proves that the invention meets the novelty criterion, the combination of all the essential features of the prior art in such a combination, where the threshing drum is combined with a diametrical fan, is not known, ensures the achievement of the technical result: an increase in the degree of threshing and throughput of the combine thresher, therefore the invention meets the criterion of "significant differences".

The device is presented graphically.

The threshing device consists of a threshing drum 1, pests 2, concave 3, which provides for the separation of threshed grain, blades 4, creating an air flow and a round frame 5.

The device operates as follows. During the movement of the combine harvester, the mowed mass of plants is fed from the receiving chamber of the header to the thresher. Due to the use of the threshing drum 1, made with internal curved blades 4 over the entire width and in the shape of the diametrical fan blades located around the inner circumference, a suction air stream is created at the inlet to the thresher, which ensures reliable mass supply to the thresher and high-quality threshing.

Thus, the set of essential features ensures the achievement of a technical result - an increase in the air flow rate, ensuring the reliability of capture and supply of mass to the threshing zone, as well as an increase in the threshing rate, throughput of the thresher and an increase in the performance of the combine harvester.

Claims (1)

A threshing device, including a threshing drum with pests and concave, characterized in that the threshing drum is combined with a diametrical fan and is made with internal curved blades over the entire width of the drum in the form of diametrical fan blades located around the inner circumference of the threshing drum.

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