秸秆圆捆机捆绳机构的参数优化与试验  

Parameter optimization and experiment of rope-winding mechanism of straw round balers

作　　者：王德福[1] 张全超[1] 杨星[1] 李超[1] 李东红[1] 王沫[1] 平忠源 

机构地区：[1]东北农业大学工程学院,哈尔滨150030

出　　处：《农业工程学报》2016年第14期55-61,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金资助项目(51405076);高等学校博士学科点专项科研基金资助项目(20124105110004);黑龙江省科技攻关项目(GC13B604)

摘　　要：针对我国中小型圆捆机收获的秸秆捆易于膨胀松散、甚至散捆的问题,设计了一种与钢辊式圆捆机相配套的捆绳机构。在秸秆捆力学特性测定及其膨胀变形影响因素分析的基础上,利用钢辊式圆捆机试验台,选取影响捆绳机构性能的导绳轮半径、链轮中心距圆捆机侧壁的安装距离、以及捆绳在秸秆捆端部缠绕的圈数作为试验因素,以秸秆捆膨胀率和捆绳消耗量为评价指标进行试验研究。结果表明:对秸秆捆膨胀率贡献率依次为安装距离、导绳轮半径、圈数;对捆绳消耗量贡献率依次为导绳轮半径、安装距离、圈数。当试验因素参数组合为圈数2圈、导绳轮半径70 mm、安装距离62 mm时,秸秆捆膨胀率为4.42%,捆绳消耗量为2.93 kg/t。研究结果可为圆捆机捆绳机构的研究和设计提供理论及技术依据。China is rich in crop straw resources, and annual straw output has reached about 700 million t. Due to fluffy and dispersed properties, baling of straw is very necessary for its further utilization. Because round balers don＇t have the knotter of square balers, the structure of round balers is relatively simple, and it is widely used both at home and abroad. Small and medium-sized round balers are widely used in the rural areas in China. At present, there are some problems when the straw bales are harvested by small and medium-sized round balers developed in China, and the unreasonable working way of the rope-winding mechanism is one of main reasons. In view of the straw bales harvested by small and medium round balers, easy to expand and loosen, a rope-winding mechanism was designed for the steel-roller round baler. On the basis of the measurement of mechanical property of straw bale and the analysis of influencing factors of straw bale expansion deformation,main structural parameters of the rope-winding mechanism, including wheel radius, installation distance between sprocket center and wall side of baling room and circle number of rope at the end of straw bale, were decided as experimental factors,and expansion rate of straw bales and consumption of ropes were selected as evaluation indices. Experiments were done by the round baler equipped with the rope-winding mechanism. The rope-winding mechanism was able to work smoothly in the experiment. According to experimental results, there were certain interactions among circle number, wheel radius and installation distance. Variance analysis was carried out respectively on the regression models of 2 evaluation indices by the Design Expert software. Known from the analysis of variance, the P values of 2 response surface models were all less than0.0001, and the lack-of-fits were all non-significant, which demonstrated the effect of factors was outstanding and the model was appropriate. The coefficient of determination（R2） for the models were 0.96 and 0.98 respec

关 键 词：捆绳机构 绕绳轨迹 参数 优化 圆捆机 

分 类 号：S233.4[农业科学—农业机械化工程]