Abstract:Hose reel irrigators made in China play an important role in irrigation in our country presently.However, the cart carried single nozzle sprinkler of hose reel irrigators is often twisted and overturned due to the reaction forces generated by the sprinkler and hose and the field slope. Traditionally, this disability problem is overcome by installing a cement counterweight block on the body of the cart. This solution not only increases costing but also results in a heavy cart with coarse appearance. In the paper, the theoretical factors affecting the cart stability are derived from the detailed structure of a sprinkler cart. For a cart, two kinds of topological structure models, namely three supporting points and five supporting points, are established. Focusing on a cart for single sprinkler, the equilibrium of cart stability is analysed when it is working in a field with a certain slope. The theoretical factors such as the height of gravity centre and the distance between front and rear supporting points are optimized based on the critical slope angle at which the cart doesn't overturn. The optimized results show that the critical slope angle is enlarged by about 39.53%, and the stability of the cart is enhanced greatly. An indoor test showed that the actual stability of the cart has been improved significantly.
[1]袁寿其,李红,王新坤,等.中国节水灌溉装备发展现状、问题、趋势与建议[J].排灌机械工程学报,2015,33(1):78-92. Yuan Shouqi, Li Hong, Wang Xinkun. Status,problems,trends and suggestions for water-saving irrigation equipment in China. Journal of Drainage and Irrigation Machinery Engineering,2015,33(1):78-92.(in Chinese)[2]涂琴,李红, 王新坤, 等. 基于灰色关联法的多喷头轻小型喷灌机组比选[J]. 江苏大学学报: 自然科学版, 2014,35(6): 656-662. Tu Qin, Li Hong, Wang Xinkun, et al. Comparison and selection of small scale irrigation machines with multiple sprinklers based on grey relational analysis. [J]. Journal of Jiangsu University: Natural Science Edition, 2014,35(6): 656-662.(in Chinese)[3]Wrachien D D, Lorenzini G, Medici M. Sprinkler irrigation systems: State-of-the-art of kinemat analysis and quantum mechanics applied to water jets[J]. Irrigation & Drainage, 2013, 62(4):407-413.[4]Dukes, M D. Effect of wind speed and pressure on linear move irrigation system uniformity[J]. Applied Engineering in Agriculture, 2006, 22(4):541-548.[5]Lopez-Mata E, Tarjuelo J M, de Juan J A,et al.Effect of irrigation uniformity on the profitability of crops[J]. AgriculturalWater Management,2010,98(1):190-198.[6]严海军, 金宏智, 李军叶, 等. 圆形和平移式喷灌机塔架车的纵向稳定性[J]. 农业机械学报, 2006, 36(11): 42-45. Yan Haijun, Jin Hangzhi, Li Junye, et al. Longitudinal stability analysis of towers of center-pivot and linear-move irrigation system[J].Transactions of the Chinese Society for Agricultural Machinery, 2006,36(11):42-45.(in Chinese)[7]范永申, 黄修桥, 李金山, 等. 喷灌和软管灌溉两用轻小机组洒水车稳定性分析[J]. 排灌机械工程学报, 2010, 28(3): 256-259. Fan Yongsheng, Huang Xiuqiao, Li Jinshan, et al. Stability analysis on light weight and small size watering cart for dual purpose of both sprinkling irrigation and hose irrigation [J]. Journal of Drainage and Irrigation Machinery Engineering, 2010, 28(3): 256-259.(in Chinese)[8]刘平义, 高金成, 李海涛, 等. 农用全地形仿形行走底盘地面力学特性[J]. 农业机械学报, 2012, 43(10): 36-40. Liu Pingyi, Gao Jincheng, Li Haitao, et al. Terramechanics of all terrain adaptive locomotion chassis for farmland [J]. Transactions of the Chinese Society for Agricultural Machinery, 2012, 43(10): 36-40.(in Chinese).[9]Tang Lingdi,Yuan Shouqi, Tang Yue,et al.Flow resistance study of helically coiled pipe for a hose reel irrigator based on CFD analysis[C]//2014 ASABE and CSBE/SCGAB Annual International Meeting, 2014.[10]张以升,朱德兰,张林,等.平移式喷灌机行走速度及喷灌均匀度试验研究[J].排灌机械工程学报,2014,32(7): 625-630. Zhang Yisheng, Zhu Delan, Zhang Lin, et al. Study on translocating speed and water distribution uniformity of lightweight lateral move irrigation system[J]. Journal of Drainage and Irrigation Machinery Engineering,2014,32(7): 625-630.(in Chinese)[11]中华人民共和国水利行业标准.SL 280-2003 卷管牵引绞盘式喷灌机使用技术规范[S].[12]李红,刘振超,汤攀,等. SR100 垂直摇臂式喷头摇臂有限元分析[J]. 排灌机械工程学报,2014,32(5): 429-434. Li Hong,Liu Zhenchao,Tang Pan,et al.Finite element analysis of arm of SR100 vertical impact sprinkler [J] Journal of Drainage and Irrigation Machinery Engineering, 2014,32(5): 429-434.(in Chinese)[13]全国农业机械标准化技术委员.GB/T21400.1—2008,绞盘式喷灌机第一部分:运行特性及实验室和田间试验方法[S]. 北京:中国标准出版社,2008.[14]张克健.车辆地面力学[M].北京:国防工业出版社,2002: 22-31.[15]全国农业机械标准化技术委员.GB/T 22999—2008 旋转式喷头[S].北京:中国标准出版社,2008.[16]徐平,沈佳兴,王慧. 四径向轮齿轮泵优化设计及仿真[J]. 流体机械,2015,43(1):33-37. Xu Ping,Shen Jiaxing,Wang Hui. Optimization design and simulation of four radial gear Pump[J]. Fluid Machinery, 2015, 43(1):33-37.(in Chinese)[17]钟丽平,祁力钧,冀荣华,等.基于RSM和GA的温室风送式弥雾机喷雾效果优化分析[J]. 排灌机械工程学报,2014,32(9):788-794 Zhong Liping, Qi Lijun, Ji Ronghua,et al.Analysis of optimal drop size distribution of greenhouse air-assisted mist sprayer by using response surface method and genetic algorithm[J]. Journal of Drainage and Irrigation Machinery Engineering,2014,32(9);788-794.(in Chinese).