华南农业大学学报2017，Vol.38Issue(5)：117-124,8.DOI:10.7671/j.issn.1001-411X.2017.05.020
液压驱动式圆盘耙设计与仿真试验
Design and simulation of hydraulic driven disc harrow
摘要
Abstract
[Objective] To design a hydraulic driven disc harrow,and to use it under the working conditions of the middle-lower Yangtze plain with sticky and sealing soil,large amount of rice straws and fluctuating soil moisture content.[Method] The structure and operation parameters of the disc harrow were analyzed and the hydraulic driven system was designed.The rotary speed ranges of the hydraulic motor were determined according to the forward speed of the system.The motion trajectory of the notched disc was analyzed and the critical angle of the disc was determined.The process that the disc cutting the soil was analyzed using the finite element simulation method based on ANSYS/LS-DYNA.[Result] The rotary speed of hydraulic motor ranged from 60 to 168 r·min-1.The critical angle of the disc was 23°.The simulation results showed that the resistance of soil cutting by the disc changed periodically,increased gradually as soil depth increased and then became stable.Compared with a negative disc,the hydraulic driven notched disc could rotate more soil and its tillage depth was more stable.Field experiment showed that the tillage depth for the hydraulic driven notched disc was 85-120 mm and the coefficient of variation for stability in tillage depth was 9.6％.[Conclusion] The hydraulic driven disc harrow meets the design requirements.关键词
农业机械/圆盘耙/液压驱动/有限元仿真/缺口圆盘耙片Key words
agricultural machinery/disc harrow/hydraulic drive/finite element method/notched disc分类
农业科技引用本文复制引用
万国伟,舒彩霞,刘晓鹏,肖文立,张青松,廖庆喜..液压驱动式圆盘耙设计与仿真试验[J].华南农业大学学报,2017,38(5):117-124,8.基金项目
国家油菜产业体系专项(CARS-13) （CARS-13）
湖北省技术创新专项(2016ABA094) （2016ABA094）
公益性行业(农业)科研专项(20150311806) （农业）
