Nanji Institute of Agricultural Machinery Intelligent Control Technology Team Successfully Accepted Soybean Combine Harvester

Relying on the national soybean industry technology system, public welfare industry research project, China Academy of Agricultural Sciences innovation project and other project tasks, the loss of Huanghuaihai soybean machine is large, the breaking rate is high, the "mud face" is serious, the reliability of the machine is poor, and the degree of intelligence is intelligent. Low-level problems, the agricultural machinery intelligent control technology team has innovated in soybean machine harvesting table technology, threshing separation technology and cleaning technology, and researched the soybean low-cutting technology, low-damage flexible threshing technology, high-cleaning and clearing technology. Created key components such as hydraulic dummy header, flexible header, flexible header, flexible threshing drum, high cleanliness cleaning system, and constructed crawler-type horizontal axial flow soybean harvester, crawler-type vertical axial flow soybean harvest 3 kinds of soybean harvesters, such as machine and large wheeled soybean harvester. Among them: the crawler type horizontal axial flow soybean harvester is equipped with a hydraulic copying header. The profile system can set the target retaining height, and the system obtains the floating angular displacement signal of the copying device in real time, and controls the hydraulic system to be lifted by the hydraulic system. And reduce the header, realize automatic real-time profiling of the header, to meet the low-cut imitation requirements of soybean harvest. The crawler type longitudinal axial flow soybean harvester is equipped with an elastic header, and the header is replicated along the harvesting direction. The flexible threshing drum and high cleanliness cleaning system are arranged to achieve low damage and high clean harvest of soybean. Large wheeled soybean harvester, integrated flexible header technology, flexible threshing technology, high cleaning and cleaning technology to achieve soybean and low-loss combined harvesting. The machine is equipped with operation detection display terminal, which can realize online detection and display of main parameters. Realize online monitoring of the working environment around the harvester. Through this test, the harvest loss rate of the three models is ≤ 2%, the breaking rate is ≤ 4%, and the impurity content is ≤ 4%, which is better than the standard-specified indicators and superior to other models used in the Huang-Huai-Hai area.

In order to reduce the vibration during the operation of the soybean combine harvester, improve the work reliability and improve the driving comfort, this test uses the DH5902 dynamic signal acquisition device to collect the cab of the soybean combine harvester, the engine, the threshing drum, the vibrating screen, etc. The vibration conditions under different working conditions, such as loading and harvesting, obtain the distribution of time domain characteristics and frequency domain characteristics, and provide reference for optimizing the design of soybean combine harvester. The DH5905 wireless torque test system was used to collect and analyze the power variation of the main working components during the operation of the soybean combine harvester, which laid the foundation for the research of power distribution of the combined harvester.

In this experiment, the plant shape parameters of 24 soybean varieties were also measured. Plant samples of 24 soybean varieties were collected to test the physical and mechanical properties of soybeans. The characteristics of different soybean varieties suitable for mechanized harvesting were studied and provided for soybean breeding and cultivation. reference. In the later stage, a comparison test of 24 soybean varieties will be conducted to judge the adaptability of different varieties.