Combined threshing separation device of transverse tangential flow roller and longitudinal dual axial flow roller

Abstract

The invention relates to a combined threshing separation device of a transverse tangential flow roller and a longitudinal dual axial flow roller, and relates to the technical field of the manufacturing of mechanical threshing separation devices for crops. The combined threshing separation device comprises a transverse tangential flow threshing separation system and a longitudinal dual axial flow threshing separation system, wherein the transverse tangential flow threshing separation system comprises a tangential flow roller, knife-shaped teeth, a tangential flow grid concave sieve and a grasschopping cutter; and the longitudinal dual axial flow threshing separation system comprises a longitudinal axial flow roller, a longitudinal axial flow grid concave sieve, a longitudinal axial flow roller cover plate and a diversion cover. The combined threshing separation device can meet the harvesting requirement of large feeding quantity of the crops, and is high in harvesting efficiency and threshing separation capacity of grains and low in the power consumption of threshing separation, and stalks crushed by the grass chopping cutter are smashed, so harvested straw can be returned to fields directly.

Description

technical field [0001] The invention relates to the technical field of manufacturing mechanical threshing and separation devices for agricultural crops, in particular to a combined threshing and separation device of a horizontal cross-flow drum and a vertical double-axial flow drum, which can be widely used in harvesting rice, wheat, rape, barley and soybeans. High-performance harvesting for classes, etc. Background technique [0002] The existing harvester mainly adopts the horizontal axial flow threshing and separation device, which has a simple and compact structure and good threshing performance. However, due to the limitation of the horizontal space position, the threshing drum cannot be too long. Therefore, the threshing and separation capabilities are limited. When the feeding amount is increased, there are often problems such as incomplete separation, increased entrainment loss, and uneven distribution of materials on the cleaning screen. Compared with the horizonta...

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Problems solved by technology

In recent years, with the continuous expansion of rice planting area, the increase of yield, and the popularization of high-yield rice, it is difficult to meet the high-quality and high-performance harvesting requirements of vertical uniaxial flow drums, and there are still poor threshing and separation performance and low harvesting efficiency. High, when harvesting crops with a large amount of feed, the phenomenon of blockage of the longitudinal axial flow drum and incomplete separation of grains often occurs

"Development of Longitudinal Axial Flow Threshing Separation-Cleaning Test Bench" [Journal of Agricultural Mechanics, 2009, 40 (12), 87-91] announced a longitudinal axial flow re-threshing separation device and "Two kinds of axial flow threshing separation device Comparative Experimental Study on the Distribution of Extrusions" [Journal of Agricultural Engineering, 2008, 24(6): 154-156] published a vertical single-drum threshing and separation device. The unit power consumption of these two vertical axial flow drums is large, and the harvesting performance It is not high, and there are problems such as easy clogging when feeding materials, incomplete threshing and separation of grains, and large loss of grains when performing large-scale feeding operations above 6kg / s

Chinese patent ZL200520085673.8 discloses a new type of longitudinal axial flow drum harvester separation device, Chinese patent ZL00137715.9 discloses a combined shear flow and longitudinal axial flow threshing separation device and Chinese patent ZL00137715.9 discloses a cutting The threshing and separating device with a single-flow drum and a double-axial-flow drum organically has the same problem that agricultural materials are easy to block at the entrance of the threshing drum, the volume and power consumption of the threshing separation structure are large, the harvesting cost is high, and the extruded material is separated along the Uneven radial distribution of the concave plate, large grain breakage rate, many light impurities on the sorting sieve surface, and large grain loss, etc.

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