磁力轮式塑料大棚清洗装置的设计与试验  

Design and experiment of cleaning device with magnetic wheels for plastic greenhouses

作　　者：何培祥[1] 汪洋[1] 何家成[1] 梁永江 

机构地区：[1]西南大学工程技术学院,重庆400716 [2]贵州省烟草公司遵义市公司,遵义563000

出　　处：《农业工程学报》2015年第21期102-108,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：重庆市应用开发计划项目(cstc2013yykf A80003)

摘　　要：针对塑料大棚清洗困难的问题,设计了一种磁力轮式塑料大棚清洗装置。该装置主要由磁力轮式行走机构和毛刷清洗机构组成,其核心部件分别为磁力轮、行走电机、毛刷和清洗电机。工作时,由行走电机驱动磁力轮靠磁力吸附在大棚钢制骨架上行走,并由清洗电机驱动毛刷进行清洗工作。该装置适用于骨架间距1 m的拱形钢架塑料大棚,对大棚跨度和脊高无特殊要求。试验结果与分析表明,在纯自来水和洗涤液条件下,大棚透光率分别从清洗前最低的50.9%和49.0%提高至清洗后最高的88.4%和88.9%,最佳清洗流量分别为1.0和1.2 L/min;磁力轮行走机构最小驱动力69 N,满足行走要求;清洗装置平均工作效率6.6 m2/min;大棚倾角变化时,透光率整体平均提高46.7%,使用效果良好。该研究解决了塑料大棚清洗难题,延长了大棚使用寿命,增加了大棚维护安全性。The technology of plastic greenhouses is widely used in China. Greenhouses＇ films get dirty easily with dusts and mosses with the increasing of use time. That＇s the reason why its transmittance（which is one of the important factors that affect the greenhouses＇ productivity） decreases. Nowadays, cleaning devices are mainly designed for glass curtain walls, ventilating ducts and air conditioner pipes. These cleaning devices have difficulties in cleaning plastic greenhouses because of the greenhouses＇ arc frames and the films＇ variable surfaces. To solve the problems, a cleaning device with magnetic wheels was designed in this paper. The cleaning device consists of magnetic wheel walking mechanism and brush cleaning mechanism, whose core components are magnetic wheels, walking motors, brushes and cleaning motors. When greenhouses need cleaning, put the device on the greenhouses＇ canopy and provide power for it. Thus, the walking motors can drive the magnetic wheels to walk forward on the greenhouses＇ frame by magnetic absorption. Meanwhile, the cleaning motors also drive the brushes to clean the greenhouses with water or detergent for the first time. When the device walks to the top of the canopy, manually shift the power switch to make walking motors rotate reversely, then, the device can walk back and operate the second cleaning work. When the device returns to the bottom of the greenhouses＇ frame, it should be translated to the neighboring frame for the next cleaning work. The device＇s minimum driving force and magnetic force were calculated by the device＇s mechanical model and its force situation analysis, which was essential for walking on the greenhouses＇ frames. The analysis results showed that the driving force and magnetic force needed at least 58.9 and 235.6 N, respectively. And each magnetic wheel＇s magnetic force was no less than 58.9 N. In order to verify whether the magnetic wheel met the requirements of minimum magnetic force, the magnetic force analysis was taken in ANSYS

关 键 词：温室 机械化 设计 磁力轮 塑料大棚 清洗装置 透光率 驱动力 

分 类 号：S224.9[农业科学—农业机械化工程] S237[农业科学—农业工程]