采伐机工作臂油缸的设计及其运动分析

摘要

以采伐机工作臂油缸为研究对象,分别对其布置形式、受力情况及其强度校核等方面进行设计计算.借助机械系统动力学分析软件ADAMS,以各油缸为分析对象,选取6种不同位姿下的工作臂,分别进行模拟仿真,分析油缸在不同工况下的运动情况,得出采伐机工作臂的主要作业尺寸及油缸的受力状况.结果表明,当起重量一定且仅主臂油缸进行伸缩运动时,主臂及副臂的姿态影响着采伐机工作臂的工作幅度.因此在工作过程中可以通过调整工作臂的初始工作状态,缩短采伐机工作臂末端需要延长的距离,同时能有效减轻工作臂的负荷,从而提高机械效能.%To optimize position and orientation of harvester boom for higher mechanical efficiency, component configuration, stress situation and strength check of harvester boom were designed and calculated. Boom was virtually stimulated to 6 arm poses according to mechanical system dynamics analysis software of ADAMS, luffing and force conditions of cylinders were illustrated. The results showed postures of the main and vice booms affect the working range of harvester boom when workload was certain. Therefore, dis-tances of terminals of boom extended should be minimized when placing the initial position so as to reduce the workload of boom.