| Sunlight greenhouse facilities Vegetable cultivation process,in order to effectively control pests and diseases to be carried out several times,a large number of pesticide spraying,the existing domestic plant protection plant machinery and equipment automation,low degree of intelligence,mainly to artificial or semi-automatic operations,labor intensity,operating efficiency Low,it is difficult to achieve complete separation of human and drug,in the greenhouse environment,the personal injury to the operator,prone to poisoning,and "run,run,drop,drain" phenomenon caused serious pollution;facilities vegetable diversification planting mode,Spray pattern design is unreasonable,can not achieve precision spray,liquid spray coverage is not uniform,pesticide effective utilization rate of only 20% to 30%,pest control effect is poor.Facilities within the use of fully intelligent intelligent plant protection machinery,to achieve refined spray operations,pesticides have become one of the important means of reducing efficiency.Therefore,it is urgent to develop a kind of plant protection machinery with high structure,high adaptability,high intelligence and high efficiency.It can realize efficient spraying in the greenhouse.According to the growth position of plant,the distribution density of foliage and canopy contour,Damage to the location of information such as accurate spraying operations,thereby reducing the amount of liquid use to protect the health of workers and the ecological environment,to achieve sustainable development of agricultural facilities.In this paper,the 3M-50 self-propelled greenhouse mist machine is designed and developed,and a modular integrated scheme of "autonomous traveling vehicle + attitude adjustable air spray" is proposed.Greenhouse fog machine in the solar greenhouse special operating environment and limited work area,along the monorail movement and precise positioning,automatic logistics operations,high-voltage electrostatic wind-driven remote fine spray,fully realize the separation of human medicine fully automated application,It is of great significance to improve the economic,social and environmental benefits of modern agricultural development by optimizing the spray attitude adjustment mode according to the facility vegetable planting mode,reducing the amount of liquid use,improving the utilization rate of the liquid and realizing the precise precision spray operation.The main research contents of this paper are as follows: the whole structure design and three-dimensional model of the 3M-50 self-propelled greenhouse heating machine;the design of the airflow assist system,the liquid medicine system,the electric self-propelled chassis and the profile spray attitude adjustment mechanism And the optimization of CFD technology is used to simulate the process of droplet movement during the operation of 3M-50 self-propelled greenhouse,combined with theoretical analysis and calculation,a spray deposition performance prediction method is designed and the spray attitude adjustment mode The design and simulation of the prototype,according to the three-dimensional design model,theoretical calculation and simulation optimization,the prototype of the trial production,and carried out the spray deposition test verification test and solar greenhouse in the plant protection operation test.The results show that the spray performance of 3M-50 self-propelled greenhouse is more than that of the same sprayer,and has good droplet deposition performance,uniformity of spray distributio n and droplets in crop Penetration performance. |
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