Double-tier cutter of combine harvester

Abstract

The invention relates to a double-tier cutter of a combine harvester. The double-tier cutter comprises an upper cutter fixed on a frame and a lower cutter fixed on the frame. The lower cutter is disposed below the upper cutter and comprises a lower cover, a lower cutting blade, a pulling component, a crank-rocker mechanism and a lower screw vane; the lower cutting blade, the pulling component, the crank-rocker mechanism and the lower screw vane are disposed within the lower cover; pulling claws re fixed to the crank-rocker mechanism; the crank-rocker mechanism drives the pulling claws to reciprocate for collecting, gripping and guiding wheat stubbles; the wheat stubbles are then cut by the lower cutting blade; finally, the lower screw vane receives the cut wheat stubbles under the auxiliary pushing action of the pulling claws and gathers the wheat stubbles for discharging and ridging. The double-tier cutter is capable of cutting the wheat stubbles twice, and residue of the wheat stubbles can be thoroughly cleared.

Description

technical field [0001] The invention relates to a double-deck cutter for a combine harvester, which belongs to the auxiliary facilities of the wheat combine harvester. Background technique [0002] Wheat is an annual gramineous plant widely planted all over the world, and it is the food crop whose total output is second only to corn in the world. my country is a large agricultural country. While the wheat planting technology has been improved, the corresponding supporting equipment for harvesting wheat has not been developed rapidly. As far as the present existing combine harvester is only equipped with one group of cutters, there are many deficiencies: [0003] (1) If the single-layer cutter wants to ensure shorter stubble, it needs to reduce the cutting height, so that the longer straw will be harvested and enter the thresher, so that the machine will consume a lot of power in threshing and cleaning , resulting in waste of resources and increased harvesting costs; [00...

AI Technical Summary

Problems solved by technology

[0003] (1) If the single-layer cutter wants to ensure shorter stubble, it needs to reduce the cutting height, so that the longer straw will be harvested and enter the thresher, so that the machine will consume a lot of power in threshing and cleaning , resulting in waste of resources and increased harvesting costs;

[0004] (2) Longer straw enters the thresher, especially when the straw is wet, it is easy to entangle and jam the thresher, and it is difficult to eliminate the fault. In many cases, it is necessary to manually remove the entangled straw , Time-consuming and labor-intensive, not only affects the rush to harvest and rush to plant, but also affects the harvesting efficiency, reducing the operating income of the harvester owner in the short busy season;

[0005] (3) In many cases, in order to increase harvesting speed and increase income, the owner of the harvester will raise the cutting position of the straw, leaving high stubble on the ground. bud

The vast majority of farmers, on the one hand, do not have a strong awareness of environmental protection, and on the other hand, they are eager to save trouble, and often remove the straw by burning, which not only destroys the microbial structure in the soil, but also poses a great potential safety hazard, and greatly aggravates the pollution of the soil. air pollution

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