A combine harvester with differentiated processing of material function

By employing multiple parallel narrow screens and drive components with differentiated vibration parameters in the combine harvester, the problems of uneven material distribution leading to poor screening and low efficiency were solved, improving cleaning quality and efficiency. Furthermore, the cleaning effect was further enhanced by optimizing airflow distribution.

CN120615476BActive Publication Date: 2026-06-09NANJING AGRI MECHANIZATION INST MIN OF AGRI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING AGRI MECHANIZATION INST MIN OF AGRI
Filing Date
2025-07-29
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In existing combine harvesters, uneven distribution of material within the cleaning device leads to insufficient screening capacity, resulting in significant cleaning losses and low efficiency.

Method used

Multiple narrow screens are arranged in parallel. By configuring different specifications of drive components for the screens at different positions, their vibration parameters are made different, so as to achieve differentiated screening of materials. Furthermore, the airflow distribution is optimized through multi-level cleaning airflow.

Benefits of technology

It enables differentiated processing of materials, improves screening quality and efficiency, reduces cleaning loss rate, and controls costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a combine harvester with a material differentiation processing function, which comprises a walking chassis, a ploughing and harvesting assembly, a material conveying assembly and a threshing and cleaning assembly arranged in sequence from front to back on the walking chassis; the threshing and cleaning assembly comprises a threshing device and a cleaning device arranged in an up-down mode; the cleaning device comprises a sieve body and a driving main shaft for vibrating the sieve body; the number of the sieve bodies is at least three, and all the sieve bodies are closely arranged in the axial direction of the driving main shaft; a driving member is connected between the driving main shaft and each sieve body, and the specifications of the driving members connected with the sieve bodies at different positions are different, so that the vibration parameters of the sieve bodies at different positions are different. In the application, the structural design of the cleaning device can fully meet the distribution characteristics that the materials falling from the threshing cylinder of the threshing device are more on both sides and less in the middle, and targeted screening processing of the differentially distributed materials is realized.
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Citation Information

Patent Citations

  • Vibrating screen device

    CN202738480U

  • Self-adaptive regulation and control method applied to combine harvester

    CN120615478A