摘要
开发设计了一种新型爪挖式山药收获装置。该装置可以一次性将山药根茎及其周围一薄层土壤一起自地面挖出,能实现山药的全机械化收获,大大提高山药收获效率,降低山药收获工作强度。针对该装置关键零件主杆进行了静力学分析和线性屈曲分析。经分析,主杆所受的最大应力为5.016 1 MPa,远小于材料的屈服极限250MPa,证明了主杆强度满足要求。求出了主杆前3阶线性屈曲模态以及液压力对线性屈曲模态的影响。
A new type of Yam Harvester by digging claw is developed. The device, achieving the full mechanization of yam harvest, can harvest yam rhizome and a thin layer of soil surrounding one-time, greatly improving the efficiency and decreasing the level of work of yam harvesting. In this paper, the static analysis and linear buckling analysis of main rod, one key part of the device, are carried out. After analysing, the maximum stress of main rod is 5.016 1 MPa. It＇s far less than the material yield limit 250 MPa. It＇s proved that the main rod meets strength requirement. The first three order linear buckling modes of main rod is achieved. The effect of radial pressure load to linear buckling mode is verified.
出处
《农业装备与车辆工程》
2017年第9期31-34,共4页
Agricultural Equipment & Vehicle Engineering
