新型山药收获机切削阻力和功耗的研究

摘要

为解决山药、牛蒡等长根茎果实收获难、效率低的难题，设计了一种新型山药收获机，巧妙地模拟考古挖掘的方式，提出了采用去除山药根茎两侧土壤、取其中央的挖掘方法来进行总体机构的设计；根据山药的种植特点和垄沟结构尺寸，确定山药收获机的基本参数；通过运动学和动力学分析，依据土壤切削阻力理论，提出了切削阻力和功率消耗的确定方法，并根据相关农艺要求给出了链刀的切削阻力 F1＝1158．3N，螺旋刀片的切削阻力F2＝199．26N，为收获机具体设计阶段强度校核和安全性、可行性分析提供了重要依据。%Based on the characteristics of long yam rhizome , it designed a new type of yam harvester in the way of getting rid of the soil of the both side of the yam rhizome ,studied the structure and working principle .On the basis of the planting environment and agronomic requirements of yam , it determine the basic parameters of yam harvester;In the light of the theory of the soil cutting resistance ,it determined the cutting resistance of chain cutter F1=1158.3N, spiral blade cut-ting resistance F2=199 .26 N by the kinematics and dynamics analysis .It provides important basis for Intensitysafety feasibility analysis in the detailed design of the harvesting machine .