【作者】 陈国晶；

【导师】 梁兆新； 杨坚；

【作者基本信息】 广西大学 ， 农业机械化工程， 2006， 硕士

【摘要】 切割是甘蔗收获的关键环节，切割器又是收割机的主要工作部件。切割器切割性能的好坏严重影响着甘蔗收割机的性能及其推广应用。因此，对切割器切割破头率的影响因素进行深入的试验研究，找出影响破头率的主要因素，研究甘蔗切割破头率机理，优化工作参数，为甘蔗收割机切割器的设计提供理论依据，具有重要的理论意义和实用价值。 论文利用甘蔗切割综合试验台，采用二次回归正交旋转设计试验方法，在较硬土壤与较软土壤两种试验条件下，对影响甘蔗切割器切割破头率的田间地面不平引起的振动因素(频率、振幅)、切割器结构因素(刀片刃角、刀片切割角、刀盘倾角、刀片数目)进行了室内物理模拟试验研究；采用数理统计方法建立了各试验因素与破头率之间的回归数学模型，分析了各试验因素及其交互作用对破头率的影响；通过运动学分析与仿真研究方法，进一步探讨了切割不漏割条件及田间地面不平引起的振动因素和切割器结构因素对破头率的影响机理；并在频率、振幅取最小值和两种土壤条件下，分别对试验因素进行优化，同时进行了综合优化，获得因素较优组合为：刀片刃角21°，刀片切割角30.5°，刀盘倾角11.5°，刀片数目4把。综合优化的因素较优组合下，破头率小于11％。更多还原

【Abstract】 Cutting is the pivotal process in sugarcane harvesting procedure and the cutter is the main working parts. The cutter’s cutting performance has a badly effect on sugarcane harvester’s working performance and it’s popularized application. So it is essential for us to do an in-depth experiment study on affecting factors which are related to the rate of broken biennial root of the single base cutter to find main factors affecting the rate of broken biennial root, to study cutting mechanism of the rate of broken biennial root, to choose preferable working parameters. These studies which has important theoretical significances and practical values will supply some theoretical basis on cutter structural design of sugarcane harvester.In this dissertation, using compositive test-bed experiment and adapting quadratic regression orthogonal rotatable design, an indoor physical simulation experiment study on the relation between the affecting factors including ground vibration factors(frequency , swing ) caused by accidented ground and cutter’s structural factors(knife-edge angle of blade, cutting angle of blade, obliquity of disc cutter, number of blade) and the rate of broken biennial root sugarcane under two different experiment situations which include hard soil and soft soil.更多还原