Design And Research On The Adaptive Tobacco Seedlings Leaf-cutting And Disinfection Machine

Abstract:Tobacco is one of the most important economic crops in china and an important tax revenue for government. The main planted areas includes:tobacco planting zone in southwest China, tobacco planting zone in southeast China, tobacco planting zone in the upper and middle Yangtze River, tobacco planting zone in huang-huai region and north tobacco planting zone. According to the statistics of tobacco monopoly bureau:the nation’s ascertain cultivated area is about2118million mu and the volume of purchase is about5429.6million dan. The taxation of China’s tobacco industry has been realized8649billion yuan and turned over7166billion yuan of the state revenue. The development of tobacco production overall presents tendency of large-scale seedling, planting mechanization. In1996,our country has first studied and popularized the technology of tobacco floating-seedling. Cutting leaf is indispensable in the process of tobacco seedling, good for regulation of the growth of tobacco seedling and it have a positive effect on development of root systems, thicker stem, early flowering control raising survival rate and limit fungi harm. This paper designs a adaptive energy saving tobacco seedling leaf cutting machine for reduce the labor intensity of leaf cutting personnel and realize mechanize of tobacco seedling leaf cutting. This design could well-adjusted the tobacco seedling pond in the complex environment and it can implement engine start, set disinfection mode,automatic non-impact leaf cutting, exchange by the self-locking and moved longitudinally.Firstly, this paper made detailed understanding on the development and research status of tobacco leaf cutting machine. The machines’ work requires is understood deeply through the communicating with the technical staff of nursery, investigating on tobacco seedling base and analyzing the tobacco leaf cutting machine shortcomings carefully.And this paper’s goal and content are based on the improving these shortcomings and making a technology roadmap to overcome them. According to the research goal and working environment requirement of leaf cutting machine, designs a structure of leaf cutting machine, includes:The passivity adaptive structure of width, synchronous four-wheel drive mechanism,spiral height adjustment reciprocating structure of double shafts, electronic control unlock spine strip,electronic control lifting switch mechanism.We have built and tested a prototype to make greater progress.Then according to the study, the control system of leaf cutting machines is designed comprehensively by the wireless remote control technology, sensor technology and single-chip technology. This machine sets path planning to further reduce the chance of scissoring leakage according to the operational requirements. Integrating the execution components, information acquisition unit, etc. and determining the logical order of execution unit and the switching signal ensure the continuity and efficient of control operations. And using algorithm control on the reciprocating mechanism and longitudinal walking ensure the efficient operation of the reciprocating motion and non-impact on end as possible. Precise control of longitudinal walking step is guaranteed by adjusting its parameters.Finally, the no-load experiment and field experiment has been experimentally. The experimental results show that:there are several deficiencies in the design of leaf cutting machine, this paper aims at these deficiencies and put forward the corresponding improvement opinions.