指盘式搂草机的设计与试验研究

摘要

针对目前我国传统搂草设备存在的干燥速度慢、散草打捆困难和草根容易捂烂等问题,研制出适应市场需求的新型指盘式搂草机,能够实现对苜蓿、稻、麦、秸秆的搂集和翻晒作业. 为此,论述了9 LZ-6 .0 型指盘式搂草机的整机结构和工作原理,完成了可调旋转架、指盘收放机构和指盘弹齿等关键部件的结构参数设计计算,完成了对弹齿的有限元分析和运动学模拟仿真,并对样机进行了田间试验,通过试验结果与技术指标的分析对样机进行了优化设计. 试验结果表明:该机具各项技术性能指标均能满足设计要求,操作方便,使用可靠,搂草质量好,生产率高,可满足我国饲草收获的要求.%Aiming at the problems such as the low drying speed, baling difficulties of scatter hay and grass-roots rotten, a new type of finger-wheel rake was developed to meet with the market demands and meet with the demands of the forage harvest in our country.It can rake and ted the alfalfa and rice or wheat straw.The overall structure and working principle were described briefly.The major working components such as the structure parameters of the adjustable rotation frame, the extending-retracting mechanism of finger wheel and the spring tooth were designed.And finite element analysis on spring tooth and the kinematics simulation on the finger-wheel was carried out.Through the analysis of performance test results and the technical index of the prototype,it was optimized.The test results showed that all technical indexes of the machine meet the design requirements.It is easy to operate and can be used reliability.While operating, it had good ra-king effect and high working productivity.The machine can satisfy with the harvesting requirements of forage grass.