Dissertation > Agricultural Sciences > Agricultural Engineering > Agricultural machinery and implements > Harvesting machinery

Overall Design of 4YB-I Cabbage Harvester

Author WangZhiQiang
Tutor GuoWeiJun;WangFenE
School Gansu Agricultural University
Course Agricultural Mechanization Engineering
Keywords Cabbage harvester Collection agencies Lifting mechanism Circular knives Transport aircraft Simulation
CLC S225
Type Master's thesis
Year 2011
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At present, Chinese cabbage harvesting machinery in the blank in this article by domestic cabbage planting and cultivation techniques, combined with the actual needs, reduce the labor intensity of the farmers, in order to improve the level of the cabbage harvest mechanization and Cabbage Harvester 4YB-I The overall design and its main working parts design calculations to determine the main technical parameters, the aircraft, including collection agencies, disc cutter, press the top guide positive institutions, lifting mechanism. Cabbage by the collecting mechanism into the machine, parallel to the screw shaft sandwiched roots, the pressing guide the positive bodies of Brassica ball portion is pressed in parallel with the screw shaft, the joint action of cabbage fed backward in the process of transporting by mounted on the rack a disc cutting knife to cut off the root, the finished cutting the root of the cabbage continues to be fed backward, the completion of the cutting blade reaches the secondary second cut through the horizontal conveying device of transmission, the cabbage is delivered to the side of the container. The harvester can achieve Zhengke cabbage collection, extractor, root cutting and transportation purposes. The harvest desired power of 10.692 kW, traveling speed of 0.207m / s, productivity, 1 / 2S, the overall weight of 967kg, the width of 0.54m, the spacing between the two walking wheel 0.81m, the overall structure of a size of 2600 × 1000 × 515mm. This thesis a more in-depth research in the following aspects: (1) According to the survey of domestic cabbage planting and cultivation mode, the whole structure of the program of development of cabbage harvester. (2) analysis of the type, function and performance of the disc cutter, designed a serrated disc cutter with a diameter of 260mm, speed 225r/min. (3) against the cabbage in the harvesting process of the harvesting machine in the upward transport, designed to spin in the opposite collecting mechanism and parallel to the screw shaft, a mounting angle of 10 ° with the horizontal center distance of two parallel screw conveyor 105mm pitch is 35mm and a length of 1500mm. (4) designed in this paper pressed top guide positive belt, its tilt angle is taken as β = 10 °, the speed is: V = 0.203 m / s. Wherein the the design driving drum diameter D1 = 200mm, the diameter of the driven drum D2 = 130mm. To prevent out with slide the pulley rim design small boss and width B = 330mm. (5) combined with the design requirements of the cabbage harvester tractor PTO shaft speed 4YB-I, the powertrain program, and other key components of the detailed design and theoretical calculations. (6) in a three-dimensional physical prototype model in Pro / E software positive pressure of the top guide belt and disc cutter statics performance analysis, the lifting mechanism in ADAMS simulation in ANSYS.

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