| Melon as the economy crops in Xinjiang area, Its acreage in the annual growth trend, Annual melon acreage was up to about 75 acres. A large area of melon cultivation makes precision sowing technology has been widely application, in the whole process of Melon cultivation mechanization, 2BMJQ-II air-suction melon precision Dibble developed by the Xinjiang kesheng Branch Company is the most widely used, Improved the quality of precision sowing melon, To achieve the purpose of saving time and labor. However, as part of a large melon seed particles, irregularly shaped heterosexual seeds, Dibble’s design requirements for more special; Considering the economics of melon, Climate selectivity, Different regions of the selected type of planting Presence a large difference, Therefore requires a Bunch is to adapt to a variety of melon types of precision sowing. At present theoretical study of precision Dibble is focused on the rule of seeds, Such as cotton, corn, soybeans. For Melon seeds precision sowing design in addition to the key components, Still need for further research on the adsorption precision depth, In this paper, For air-suction melon precision Dibble working process is based on problems in theoretical and experimental studies, On the basis of the original structure, to optimize the improvement for the Key components, Combined works to explore the main factors that the impact of seeding performance,Explore the intrinsic link between the individual and the variation of performance indicators and Seeding.The main contents include:(1) Three types of melon seeds were measured and analyzed the physical characteristics, Target is to obtain Seed Triaxial size, Seed grain weight, Natural angle of repose, Spherical rate And so on, for the design of structural parameters Bunch Main Provide a theoretical basis; By analyzing the distribution of three-axis dimensions, Analyzed to determine the adsorbed species ranges from the diameter of the hole and the other structural parameters and operating parameters.(2) By 2BMJQ-II air-suction melon Bunch precision mapping is carried out, used Solidworks three-dimensional modeling analysis to study the course of their work, Select the kind of disc form for seven holes, Determined by calculating the diameter of 7 mm hole large melon,The sheet is 6mm, small pieces of 5 mm, Through a comprehensive analysis of the structure and the various parts of the parameters. Studied species is clear, the impact of mixing species, a negative pressure, the speed of the work efficiency and quality of seed.(3) Select three kinds of melon seeds type Inner large, Inner Mongolia in the film, Inner Mongolia small piece of test material, for different sizes melon seed seeding adaptability experimental study,Adoption Orthogonal test, by Analysis of test results obtained: For the optimal combination of large seeds: when Speed is 40 r/min, Negative for 6 Kpa, Single grain rate of 56.3%, Double grain rate of18.4%, Porosity of 1.3%. Optimal combination tablet seeds: when Speed is 35 r/min, the negative pressure is 6 Kpa, Single grain rate of 56.3%, Multi-grain rate of 41.3%, porosity of 2.4%; The best combination of a small piece of seeds: when Speed is 45 r/min, the negative pressure is 5 Kpa, Single grain rate of 56.3%, 39.3% more grain rate, porosity of 4.4%.(4) Construction three capacity models of melon seeds side adsorption, adsorption flat, vertical adsorption in, Estimated using empirical formulas to calculate the adsorption of different adsorption negative attitude required value; Using high-speed camera equipment to observe the situation about Seeds trajectory and adsorption, And analyze the reasons for the seeds fall midway, Extraction of different adsorption characteristics, Statistics adsorption results, Adsorption test accuracy, Explore the relationship between the various interactions between factors, The level of influence of various factors on the adsorption effect. |
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