机械制造及自动化专业毕业论文--小型背负便携式烟雾机的改良设计.docVIP

摘 要 目前，我国森林病虫害形势严峻，烟雾载药是防治森林病虫害的一项重要技术。小型烟雾机结构简单、重量轻、操作容易，效率高、用药省，防治成本低，弥漫性好，附着力高，适用于林业树木、农业橡胶树病虫害防治，卫生防疫，具有广阔的应用前景。因此，根据国内外研究的结果，对背负式烟雾机进行改进设计，为研制更完善、性能更稳定的新一代烟雾机作技术准备，对推动烟雾机的推广、应用及烟雾机的设计生产具有现实的指导意义。 论文首先对国内外烟雾机的研究现状和发展趋势进行了了解；随后对背负式烟雾机的结构、组成本部分及工作原理进行了深入的分析；接着对小型背负式烟雾机的各个组成部分进行设计，包括起动系统的设计、供油系统的设计、燃烧室-喷管系统的设计、冷却系统的设计和供药系统的设计。 随后，根据人机工程学原理，对烟雾机的背带、打气筒手柄进行了改良设计；同时考虑到色彩对人心理产生的影响，对背负式烟雾机的色彩搭配进行分析；并对烟雾机噪声产生的原因进行了分析，在了解噪声来源的基础上提出了切实可行的降噪措施。 关键词：背负式；烟雾机；改良设计；人机工程学 The Improved Design of Knapsack Fogger Abstract At present, the grim situation of forest plant diseases and insect pests, drug-loading smoke is an important technology for the prevention and control of forest diseases and insect pests. Small smoke machine of simple structure, light weight, easy operation, high efficiency, the dosage, the prevention and control of low cost, good diffuse, high adhesion, is resourceful agricultural rubber trees, pest control, hygiene and epidemic prevention, has broad application prospects. Therefore, according to research results at home and abroad, to the knapsack smoke machine to improve the design, to develop more perfect, more stable performance, technical preparation of a new generation of smoke machine, to promote the popularization of the smoke machine, the application and the design of the smoke machine production is of great realistic significance. Paper first to domestic and foreign research status and development trend of smoke machine to understand; Then the knapsack smoke machine of the structure, composition and working principle of this section makes a deep analysis; Then the small knapsack smoke machine all parts of the design, including the design of the starting system, fuel supply system design, combustion nozzle system design, the design of cooling system and chick system design. Then, according to the principle of ergonomics, straps, smoke machine on the pump handle on the improvement design. At the same time, considering the color psychological impa