D型单结绳打结器关键部件逆向设计与结构优化

Reversal Design and Structure Optimization of the Key Part of D-type Twine Single-knotter

农牧业机械化标志着农牧业现代化的进步,而饲草生产机械化是农牧业机械化的重要组成部分,牧草收获已从传统人工收获方式发展到今天的自动捡拾压捆机械收获。打结器是压捆机械的核心部件,以9YFQ-1.9型正牵引跨行式方捆压捆机为例,分析其装配的D型打结器的工作原理,运用CATIA软件对打结器架体逆向建模,借助ANSYS workbench14.5软件对架体进行有限元分析,并对其进行结构拓扑优化。在考虑装配尺寸和加工工艺的前提下,根据优化结果对架体三维模型进行修改,加厚了蜗杆轴孔壁,加宽了打结钳支座,并在两者之间增加加强肋。对优化后的架体进行故障状态的有限元分析,结果显示结构优化达到了预期效果。

Agricultural mechanization is an important symbol of modernization of farming and animal husbandry, forage production mechanization is an important part of mechanization of farming and animal husbandry. Forage harvesting has developed from the traditional manual harvesting to modern automatic collecting briquetting machine harvest, the knotter is the core component of collecting baling machine. Based on 9YFQ- 1.9 inter-bank conveyor bales grass machine, analy- zes its principle of type D knot, using CATIA software to implement the frame body reverse modeling, The finite element analysis by using ANSYS software was carried out on the body, and carries on the structural topology optimization. Under the premise of considering the mounting dimensions and processing technology, according to the result of optimization make the 3d model some change , thickening of worm shaft hole wall, and widen the bearing assembly , then increase the strengthening rib between them. The finite element analysis was carried out on the optimized frame body, the results show that the optimization effect.