Secondary cutting header of combine harvester

Abstract

The invention discloses a secondary cutting header of a combine harvester, which comprises a secondary cutting knife device, wherein the secondary cutting knife device is connected behind a header volute, the secondary cutting knife device is arranged below a gap bridge, and the gap bridge is arranged on the header volute. The secondary cutting knife device comprises parallelogram lifting mechanisms, hydraulic cylinders, a connecting plate, a cutting knife holder welding, a cutting knife assembly, a swing ring mechanism, a hydraulic motor, a blade protector and a pressing plate, wherein the parallelogram lifting mechanisms are arranged at both ends of the cutting knife holder welding, the quadrangular lifting mechanisms are welded and connected with the connecting plate, the hydraulic cylinders are arranged inside the parallelogram lifting mechanisms, and the connecting plate is connected with the rear side plate of the header volute through a short bolt. The secondary cutting header of the combine harvester is stable in structure, convenient to operate, capable of effectively reducing the energy consumption of the machine and tool operation, and greatly reducing the crop harvesting loss rate and further reducing the economic loss problem of the crops during mechanical harvesting.

Description

technical field [0001] The invention relates to the technical field of agricultural harvesting machinery, in particular to a secondary cutting header of a combine harvester. Background technique [0002] In the composition of the loss rate of crops harvested by traditional combine harvesters, threshing and cleaning losses account for more than 60%, and header losses account for 40%. When harvesting tall stem crops, the loss rate is about 8% under normal crop conditions. , when crop lodging occurs and the water content is high, the loss rate is usually as high as 15-25%. The main reason is that the biomass of tall and tall stem crops is large, and the amount of feed in combined harvesting is large, and the ear grains are not easy to be completely removed during combined harvesting. On the other hand, the stalks of tall and large stalk crops have high moisture content and contain a lot of viscous biological fluids. During the combined harvesting and threshing process, the thre...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a secondary cutting header for a combine harvester to solve the problems of high energy consumption, high harvest loss rate and economic loss caused by the existing combine harvester harvesting tall and large stalk crops in the above-mentioned background technology

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