中国地质大学长城学院 本 科 毕 业 设计题目 槽轮式穴播器的设计 系 别 工程技术系 专 业 机械设计制造及其自动化 学生姓名 学 号 指导老师 职 称 2011 年 04 月 22 日槽轮式穴播器的设计摘 要我国是农业大国,农业在整个国民经济中占有十分重要的地位,一直是我们国家的支柱产业。我国是世界上人口最多的国家,有着十三亿人口,而耕地只有 1.2 亿 hm2,人均耕地占有量 0.08 hm2,仅为世界平均水平的三分之一,人多地少是我国的特点,如何在有限的耕地里产更多的农产品,以满足人民的物质需要,一直是我们需要解决的问题,精密播种则是提高产量的一个重要环节和途径,而外槽轮式穴播器是实现精密播种技术的主要手段,其性能的好坏直接关系到农作物的生长和产量。由于外槽轮式穴播器在工作时排种脉动性和种子沟内分布不均匀性,不可避开的会出现重播和漏播的现象,使精密播种难以实现,因此克服外槽轮式穴播器的缺点,讨论外槽轮式穴播器对我国农业的进展有重大意义。关键词:外槽轮;精密播种;穴播;ABSTRACTChina is a large agricultural nation, in the whole national economy in agriculture occupies a very important position, are always our country's pillar industries. China is the world's most populous country, with 1.3 billion population, cultivated land only 1.2 billion hm2, cultivated land per capita occupancy hm2 0.08 per the world average level, only one-third of arable land, people in China is in the characteristics of the cultivated land, how to produce more limited in the agricultural products, to meet people's material needs, always is we need to solve the problem, precision seeding is one of the important links increase yield and ways, and outside slot bunch planting device is to realize precise wheeled the principal means of planting technology, its performance is directly related to the crop growth and yield.Because bunch planting apparatus in the slot wheeled metering pulsation sex work in the trench and seeds of uneven distribution of sex, inevita...