牵引式V形折叠搂草翻晒机设计与试验

Design and Experiment of Trail-type V-shape Folding Hay Rake

阐述了牵引式V形折叠搂草翻晒机的总体结构及工作原理,对搂草机的主要工作部件指轮进行了结构设计,对弹齿绝对运动轨迹进行了分析;采用ADAMS软件对搂草指盘进行了仿真分析;设计的双液压系统实现了自动化控制。试验结果表明,该机结构合理,工作性能良好,草条密度变异系数为15.8%,漏搂率为1.2%,花叶损失率为2.3%。该机可呈V字形折叠、展开,搂幅可调,运输便捷;搂草指盘可整体自动升降,且每个指盘单独可调,仿形能力强;可同时完成搂草、翻晒作业。

The basic structure and work principal of trail-type V-shape folding hay rake were introduced.The structure of the finger wheel which was the main working part of the machine was designed and the motion trail of the tooth was analyzed. The finger wheel of the machine was studied with simulation analysis by the ADAMS software. The double-hydraulic system was designed to realize automation control. Experiment results indicated that the hay rake had good performance and reasonable structure,the variation coefficient of uniformity of windrow was 15. 8%,miss raking rate was 1. 2% and leaf loss rate was 2. 3%. The hay rake could fold or unfold into a V-shape,so the working raking width could be changed,it could be transported without any difficulties. The whole finger wheels could be risen and fallen automatically and its single finger wheel was adjustable,so it had a good profile modeling ability.The hay rake could perform rake and tedding simultaneously.