滚移式喷灌机关键部件的设计与试验

Key components design and experiment of roll wheel line move sprinkling irrigation machine

针对节水灌溉技术中存在自主研发能力弱、技术性能低、设备可靠性差、经济成本过高等问题,设计研制出一种节省材料、降低油耗、工作可靠、喷灌均匀度高的滚移式喷灌机.根据输水支管受力特点,通过Matlab对支管壁厚进行优化设计,优化出3种不同壁厚的输水支管,不仅能够节省材料,降低油耗,还能增加机组爬坡能力.对滚移式喷灌机的自动泄水阀进行了结构设计,计算并确定结构参数,利用ANSYS CFX进行模拟仿真试验.田间性能试验结果表明,该滚移式喷灌机各项指标都满足要求,喷灌机向前移动时支管产生的最大挠度为2.7 m,喷灌均匀度为92.45%,喷灌强度为12.59 mm/h.该研究为滚移式喷灌机的进一步发展提供了参考.

To solve the problems of weak independent research ability,low technical content,poor equipment reliability and high economic cost in water-saving irrigation technology,a roll wheel line move sprinkling irrigation machine was designed which can save aluminum alloy material,reduce fuel consumption,and is more reliable and has high sprinkler irrigation uniformity. According to the mechanical characteristics of water pipes,using Matlab to optimize the design of the thickness of water pipes,the optimized water pipes with three different thickness can save material and increase climbing ability. The structure of the automatic drain valve was designed. Its important parameters were calculated,and the simulating experiment was carried out by ANSYS CFX. The field performance test result shows that the roll wheel line move's indicators meet the requirements. When the sprinkler moves forward,the maximum deflection of water pipes is 2. 7 m,the irrigation uniformity is 92. 45%,and the irrigation intensity is 12. 59 mm / h. The study can provide a reference for the further development of a roll wheel line move sprinkling irrigation machine.